CN105156771A - Bimetal spiral steel pipe and manufacturing method thereof - Google Patents
Bimetal spiral steel pipe and manufacturing method thereof Download PDFInfo
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- CN105156771A CN105156771A CN201510600760.0A CN201510600760A CN105156771A CN 105156771 A CN105156771 A CN 105156771A CN 201510600760 A CN201510600760 A CN 201510600760A CN 105156771 A CN105156771 A CN 105156771A
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- steel band
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- convex tendon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
- F16L9/165—Rigid pipes wound from sheets or strips, with or without reinforcement of metal
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a bimetal spiral steel pipe and a manufacturing method thereof. The steel pipe comprises a pipe body, wherein the pipe body surface extends outwards to form a convex rib which is spirally arranged around the outer wall of the pipe body; the convex rib forms a groove with the pipe body surface and is provided with an auxiliary inner steel band capable of covering the groove notch; and a hollow cavity is formed between the groove and auxiliary inner steel band, and is filled with concrete. The convex rib on the outer wall of the pipe body and the pipe body are integrally formed without any welding seam, and thus, can resist the dynamic load fatigue when bearing the dynamic load. The pipe body inner wall is provided with the auxiliary inner steel band made of a specific metal material, thereby enhancing the corrosion resistance and wear resistance of the steel pipe, avoiding the fluid pollution, reducing the thickness of the steel pipe main body and lowering the material cost. The pipe can be used in the occasions for delivering water or other special media, such as supply or discharge of water, high-corrosivity media, media with higher requirements for purity, high-temperature media and the like, and greatly lowers the manufacturing cost.
Description
Technical field
The invention discloses a kind of steel pipe and preparation method thereof, particularly relate to a kind of double metal spiral steel pipe and preparation method thereof.
Background technique
At present, in the conveying and transmisson and storage project of fluid, be generally carry with pipeline, conventional pipeline has cement pipe, plastic tube, Common Straight Carbon Steel steel pipe, Stainless Steel Tube and Coating Steel Pipe etc.Wherein, cement pipe uses cement and reinforcing bar as material, uses a kind of prefabricated pipeline that centrifugal principle manufactures, but easily leak, internal pressure-resistant ability; And bore is little, and general bore is less than 3 meters or 3 meters; Every pipe joint length is not long, and joint is many, and joint is easily revealed, constructional difficulties; First will do basis during construction, construction cost is higher.Plastic tube is raw material with plastic resin, and add stabilizer and other additive, form through extrusion process in tube producer, quality is light; Easy to process, but bore is little, holds internal pressure capability difference; Mechanical strength is low, and anti-damage performance is poor; Not wear-resistant, non-refractory is easily aging.Common Straight Carbon Steel steel pipe is the steel pipe made with carbon steel, inwall is not wear-resisting and not corrosion-resistant, and it is too large that bore can not do, and during heavy caliber, wall thickness increases greatly, cost is high, and more domestic provinces have clearly forbidden using Common Straight Carbon Steel steel pipe in water supply project at present.Stainless Steel Tube then cost is too high.Coating Steel Pipe bore can not be too large, and zinc-plated be pollute industry, large to environmental disruption, general zinc coat is not thinner, and general thickness is less than 0.1mm, wear-resistant and wash away.Existing common bimetal steel pipe, outer tube generally adopts common standard steel pipe, wall thickness is quite thick, does not save material, and interior pipe and outer tube are set with, easy delamination and coming off, and bore can not be too large, can only reach 1.2 meters to 1.5 meters, interior pipe will have enough thickness to support own form, wall thickness is often greater than 2mm even 4mm, does not save material.
The applicant is devoted for years to the research in this field, and have that a patent No. is 201410477708.6, name is called the patent for invention of " a kind of Spiral Steel Pipe with stiffening ring and preparation method thereof ", in this patent, stiffening ring and main body steel pipe can make respectively, are then welded.There is following defect: 1., body and stiffening ring be two independent parts, and be integrated by solder design, when stiffening ring is stressed, weld seam is area of stress concentration, has cracking hidden danger; 2., in volume circular bending process, because weld seam is in the outside in machining deformation district, weld seam Tensile, distortion is large, very easily ftractures; If 3., body for a long time by dynamic load, as subway, vehicle etc., weld seam very easily ftractures because dynamic load is tired; 4., in view of this class pipe structure is half flexible structure thing, particularly during major diameter body, comparatively large to the dependence of pipeclay jointly by stress effect (i.e. the backfill cooperative transformation of body and surrounding), the rigidity of body self should be increased, to avoid larger distortion.
Therefore, above-mentioned technical barrier urgently to be resolved hurrily.
Summary of the invention
Goal of the invention: the first object of the present invention is to provide a kind of heavy caliber high-strength, improves the double metal spiral steel pipe of anti-corrosive properties and wear resistance;
The second object of the present invention is to provide the making method of this steel pipe.
Technological scheme: steel pipe of the present invention, comprise body, described tube surfaces stretch out formed along tube wall spiral arrange convex tendon, this convex tendon and body form groove, and be provided with the auxiliary interior steel band that can cover this groove notch, hollow cavity is formed between described groove and auxiliary interior steel band, and fill concrete in this hollow cavity.
In the present invention, the material of steel pipe main body is carbon steel; In auxiliary, steel band can cover whole inboard wall of tube body, also can cover part inboard wall of tube body; In this is auxiliary, steel band can select Special Alloy Steel, stainless steel, Wear Resisting Steel, aluminium or copper etc., can improve the anticorrosive property of inboard wall of tube body, makes the thickness of main steel can be thinning simultaneously, reduces cost of material.
Certainly, in described assisting, between steel band and groove, be also provided with the shutoff steel band for shutoff groove notch.
Another kind of steel pipe of the present invention, comprise body, described tube surfaces stretch out formed along tube wall spiral arrange convex tendon, this body and convex tendon form groove, and be provided with the shutoff steel band of this groove notch of energy shutoff, form hollow cavity between described groove and shutoff steel band, and fill concrete in this hollow cavity, meanwhile, the inboard wall of tube body being positioned at below water line is provided with auxiliary steel band.
The cross section of described convex tendon is Ω shape, grooved, waveform, semicircle, parabola shaped or trapezoidal.
In steel pipe of the present invention, body is by the main steel band simultaneously having at least one row's convex tendon, another side correspondence forms groove, and for cover this groove notch auxiliary in the common helically coiling of steel band form, what in this is auxiliary, steel band can strengthen main steel band sends power, and when avoiding winding, steel band deforms.
The making method of double metal spiral steel pipe of the present invention, comprises the steps:
A, prepare main steel band and auxiliary in steel band;
B, this main steel band have the first opposite side and the second opposite side, main steel band are bent into the steel band of band convex tendon, and this convex tendon is arranged along the first opposite side interval of main steel band, and consistent with the length of the second opposite side, and forms groove with main steel band;
C, steel band in auxiliary is fitted in main steel band groove notch position, to form compound steel band, simultaneously described convex tendon and auxiliary in form hollow cavity between steel band;
D, this compound ribbon spiral winding is formed the body of band spirality hollow cavity;
E, on request length cut off body, the gap in the incision of body two ends convex tendon is welded main steel band and be auxiliary between steel band;
F, incision cast concrete from body one end convex tendon, until concrete flows out from the incision of this body the other end convex tendon, be full of concrete in hollow cavity, namely complete making.
In step C, first fit in the notch place of main steel band groove with shutoff steel band, then on shutoff steel band laminating auxiliary in steel band, to form compound steel band, then according to A-F step, complete steel pipe manufacturing.
Inventive principle: the present invention applies the common Force principle of pipeclay and concrete steel pipe principle simultaneously, the common Force principle of pipeclay is pipeline after embedding, the upper load of pipeline is not that the rigidity in tube road is born, but tube road and the stressed acting in conjunction each other of surrounding soil stone, just define pipeclay jointly by stress effect, load vertically downward will be converted into the hoop internal pressure of body tube wall.The working principle of concrete steel pipe is at hollow steel casing pack concrete, utilize concrete superior bearing capacity and steel pipe to concrete encapsulation, the vertical bearing capacity of steel pipe is strengthened greatly.Ordinary Steel, stainless steel and concrete three kinds of materials are organically integrated by the present invention, and give full play to respective feature and advantage, in overall structure, bear different effects respectively.
Form the convex tendon of complete closure at Spiral Steel Pipe outer wall, not only can increase tube wall circumference moment of inertia, make the general thickness of steel pipe of the wall ratio of main steel band greatly thinning, reduce the cost of material, the steel pipe of heavy caliber and super large caliber can be manufactured; When main steel are thinner, in volume circle process, the power of sending can make steel band bend, cannot carry out sending volume circle, so first main steel band is molded into cross section with convex rib structure, then with auxiliary interior steel band welding, form closed form, steel band cross-section area and moment of inertia increase, and volume bowlder is sent and is easy to realize, and is convenient to processing; Most importantly, directly by the machine shaping of body one, there is not weld seam between the two, there is not area of stress concentration in convex tendon, without cracking hidden danger; Simultaneously steel pipe rigidity is improved, pipeclay jointly by stress effect (namely body and around backfill cooperative transformation) in not easily produce moderate finite deformation, the dynamic load caused by the vibration in the external world can well be born, as subway, vehicle etc.Simultaneously, inboard wall of tube body is all or part of is provided with auxiliary interior steel band, can avoid or reduce the pollution of fluid to the corrosion of main steel pipe, wearing and tearing and main steel pipe convection cell, also auxiliary interior steel band is provided with just because of pipe interior, the thickness of main steel again can be again thinning, and owing to assisting interior steel band to select special substance thus substantially increased steel pipe corrosion-proof and wear-resisting property.In addition, by hollow cavity perfusion in vivo plain concrete or reinforced concrete, the radial direction of convex tendon inwall and the anti-pressure ability of hoop is substantially increased.During buried use, at pipeclay jointly by under the effect of stress effect, convex tendon and interior concrete thereof bear circumferential pressure jointly, improve further the bulk strength of body, thus can the thickness of slab of further thinning main steel, further reduce cost of material.
Beneficial effect: compared with prior art, the present invention has following remarkable advantage: first, and convex tendon and the body of this tube wall are one-body molded, and no-welding-seam between the two can tolerate dynamic load fatigue when bearing dynamic load; Secondly, inboard wall of tube body, with the auxiliary interior steel band of special metal material, can improve anti-corrosive properties and the wear resistance of steel pipe, avoid the pollution of fluid, also can make the reduced thickness of steel pipe main body, reduce cost of material; Meanwhile, inboard wall of tube body also can arrange shutoff steel band, and itself and convex tendon form hollow cavity, and can in this hollow cavity fill concrete, this shutoff steel band also can be used for bearing the pressure to steel band in auxiliary of medium in pipe, prevent auxiliary in steel band to groove internal strain; Finally, this pipeline can be used for the occasion of carrying water or special media, such as, supply water, draining or have the strong medium of corrosivity, degree of purity required to higher medium and the high medium etc. of temperature, greatly reduces manufacture cost.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the main steel band of the present invention;
Fig. 2 is the structural representation that surface has the main steel band of convex tendon;
Fig. 3 is the cross sectional representation that surface has the main steel band of convex tendon;
Fig. 4 is the schematic diagram of the main steel band of the present invention and shutoff steel band welding position;
Fig. 5 be the main steel band of the present invention, shutoff steel band and auxiliary in the schematic diagram of steel band welding position;
Fig. 6 is the partial enlarged drawing at A place in Fig. 5;
Fig. 7 is the partial enlarged drawing at B place in Fig. 5;
Fig. 8 is the partial enlarged drawing at C place in Fig. 5;
Fig. 9 is the schematic diagram that the compound ribbon spiral of the present invention rolls processing;
Figure 10 is the stereogram after Spiral Steel Pipe of the present invention rolls;
Figure 11 is the butt-welded cross sectional representation of tube coupling in steel pipe spiral coiling process of the present invention;
Figure 12 is D place partial enlarged drawing in Figure 11;
Figure 13 single-unit steel pipe integral of the present invention structural representation;
Figure 14 is steel pipe transverse cross section structure schematic diagram of the present invention;
Figure 15 is longitudinal cross-section of the present invention structural representation;
Figure 16 is the cross sectional representation that inwall of the present invention all covers the body of auxiliary interior steel band;
Figure 17 is the cross sectional representation that inner wall section of the present invention covers the body of auxiliary interior steel band.
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described further.
Steel pipe of the present invention, comprise body 100, comprise body 100, described body 100 outwardly extends to form the convex tendon 102 arranged along tube wall spiral, this body 100 forms groove 103 with convex tendon 102, in auxiliary, steel band 200 covers this groove notch position, forms hollow cavity 300 between groove 103 and auxiliary interior steel band 200, and fill concrete 400 in this hollow cavity 300.
In the present invention, tube wall has convex rib structure, greatly can improve the cross sectional moment of inertia of main pipe, this moment of inertia improves a lot than general reinforcement mode, bearing capacity improves, and makes the general thickness of steel pipe of wall ratio of the main steel band making body greatly thinning, reduces cost of material; Meanwhile, main steel coil strip bowlder can realize thin plate and send, and curling process is broken through.The cross section of above-mentioned convex tendon can be Ω shape, grooved, waveform, semicircle, parabola shaped or trapezoidal.
The present invention is double metal spiral steel pipe, and " bimetal " wherein refers to that steel pipe main body and auxiliary interior steel band adopt two kinds of metal materials respectively.Wherein, in auxiliary, steel band both can cover whole inboard wall of tube body, also can cover part inboard wall of tube body, and wherein, cover part inboard wall of tube body is the notch position covering body groove, thus forms hollow cavity.In auxiliary, steel band selects special metal materials such as including but not limited to Special Alloy Steel, stainless steel, Wear Resisting Steel, aluminium or copper to make, it can improve anticorrosive property and the wear resistance of inboard wall of tube body, avoid the pollution of fluid, again make the thickness of main steel can be thinning simultaneously, reduce cost of material, simultaneously this auxiliary in steel band also can strengthen main steel coil strip around time send power, when avoiding winding, main steel band deforms.And steel pipe main body can adopt cheap Ordinary Steel, also can reduce costs.
The shutoff steel band 500 for shutoff groove notch is also provided with between steel band and groove in assisting.The groove shutoff that main body steel pipe is formed at inwall by this shutoff steel band one side, can bear medium in managing on the other hand and, to the pressure of auxiliary interior steel band, prevent auxiliary interior steel band to groove internal strain; In auxiliary, steel band selects metal materials such as including but not limited to Special Alloy Steel, stainless steel, Wear Resisting Steel, aluminium or copper to make.
In the present invention, filling plain concrete or reinforced concrete in hollow cavity, can enhance body overall radial and hoop anti-pressure ability, makes the general thickness of steel pipe of the wall ratio of main steel band thinning again, thus reduce the cost of material further.
Steel pipe of the present invention is used for carrying special media, such as, have corrosive medium, to the higher medium of degree of purity requirement and the high medium etc. of temperature, can be used for water pipe or waste pipe; Conveying sandstone, dust; Urban sewage and industrial sewage; Chemical industry fluid; High temperature media; Seawater pipeline; Collector pipe; The pipeline of other conveying special medias.Pipeline lower half portion (leaking water or other media fraction) corrosion-vulnerable, answers more protection, thus form another kind of steel pipe.
This steel pipe comprises body, comprise body 100, described body 100 outwardly extends to form the convex tendon 102 arranged along tube wall spiral, this body 100 forms groove 103 with convex tendon 102, and be provided with the shutoff steel band of this groove notch of energy shutoff, form hollow cavity between described groove and shutoff steel band, and fill concrete in this hollow cavity, meanwhile, the inboard wall of tube body being positioned at below water line is provided with auxiliary steel band.
The present invention can produce the steel pipe of super large caliber (can reach diameter more than 8 meters or 8 meters); When it is used as underground pipe, utilizing pipeclay to share by stress effect, is mainly bear pressure by the concrete of convex tendon and inside thereof, during super-large diameter (D>4m), can bury soil very dark in more than 10 ~ 35 meters.
The making method of double metal spiral steel pipe of the present invention, comprises the steps:
A, prepare main steel band and auxiliary in steel band;
B, this main steel band 101 have the first opposite side 107 and the second opposite side 108, main steel band 101 is bent into the steel band of band convex tendon 102, this convex tendon 102 is arranged along the first opposite side 107 interval of main steel band 101, and consistent with the length of the second opposite side 108, and forms groove 103 with main steel band 101;
C, steel band in auxiliary is fitted in main steel band groove notch position, to form compound steel band, simultaneously described convex tendon and auxiliary in form hollow cavity between steel band;
D, this compound ribbon spiral winding is formed the body of band spirality hollow cavity;
E, on request length cut off body, the gap in the incision of body two ends convex tendon is welded main steel band and be auxiliary between steel band;
F, incision cast concrete from body one end convex tendon, until concrete flows out from the incision of this body the other end convex tendon, be full of concrete in hollow cavity, namely complete making.
In step C, first fit in the notch place of main steel band groove with shutoff steel band, then on shutoff steel band laminating auxiliary in steel band, to form compound steel band, then according to A-F step, complete steel pipe manufacturing.
Embodiment 1: inwall all covers the body of auxiliary interior steel band
First, according to the diameter of the spiral welded steel pipe of required making, helix tube molding machine is transferred to suitable formed angle.Secondly, main steel band 101 is carried out eliminate rust, after shot blast, it is rolled into the sectional shape to lower convexity (quantity, size are by actual conditions setting) with certain spacing rule through shaping machine set, be called in the present invention " convex tendon 102 ", accordingly, groove 103 is formed, then at the dual-side reprocessing welding groove 104 of main steel band, as Figure 1-3 above convex tendon 102.Then, with the shutoff steel band 500 of some be laid on main steel belt molding good after the notch position of groove 103, both are welded, to form closed hollow cavity 300, as shown in Figure 4.At the upper surface of main steel band 101 and shutoff steel band 500, steel band 200 in paving many side by side (quantity is by actual conditions setting) is auxiliary, in this is auxiliary, steel band 200 is through the band unreeling, have after leveling, the operation such as deburring the special metal material of one fixed width, the gap of 1-2mm is left between adjacent auxiliary interior steel band 200, meanwhile, auxiliary interior steel band 200 dual-side is slightly shorter than the length of main steel band 101.Weld with adjacent auxiliary interior steel band 200 is carried out the same position three-in-one with main steel band 101 with gas shielded arc welding; the dual-side of auxiliary interior steel band 200 is welded with main steel band 101 simultaneously; before welding; steel band is opened aperture in assisting and extract air and moisture in interlayer; again aperture soldering and sealing and polish, be so conducive to the antirust of interlayer inner tubal wall, thus make main body steel pipe with auxiliary in steel pipe fit; as viewed in figures 5-8, compound steel band is so obtained.Compound steel band feeding rolling machine structure 700 (1# roller 701,2# roller 702,3# roller 703) of above-mentioned formation is carried out spiral and rolls processing, as shown in figs. 9-10.While spiral rolls, submerged arc welding is adopted to weld to the spiral weld 105 between tube coupling with tube coupling, as depicted in figs. 11-12, simultaneously, Y type groove is processed at position to be welded between tube coupling and tube coupling, is conducive to different materials and adopts different welding methods.Thus roll into a kind of double metal spiral welded steel pipe, as shown in figure 13.When steel pipe spiral rolls after welding reaches requirement length, by steel pipe cutting, then by steel band 101 main between the convex tendon otch 106 at steel pipe two ends with auxiliary in the gap 600 of steel band 200 weld, as shown in figure 14.Fill plain concrete or reinforced concrete inward from steel pipe one end convex tendon otch 106 again, until flow out from steel pipe the other end convex tendon otch 106, be then full of concrete 400 in hollow cavity, as shown in figure 15; Finally complete double metal spiral steel pipe manufacturing of the present invention, as shown in figure 16.
Embodiment 2: inner wall section covers the body of auxiliary interior steel band
First, according to the diameter of the spiral welded steel pipe of required making, helix tube molding machine is transferred to suitable formed angle.Secondly, main steel band 101 is carried out eliminate rust, after shot blast, it is rolled into the sectional shape to lower convexity (quantity, size are by actual conditions setting) with certain spacing rule through shaping machine set, be called in the present invention " convex tendon 102 ", accordingly, groove 103 is formed, then at the dual-side reprocessing welding groove 104 of main steel band above convex tendon 102.Then, with the shutoff steel band 500 of some be laid on main steel belt molding good after the notch position of groove 103, both are welded, to form closed hollow cavity 300, so obtain compound steel band.Compound steel band feeding rolling machine structure 700 (1# roller 701,2# roller 702,3# roller 703) of above-mentioned formation is carried out spiral and rolls processing.While spiral rolls, adopt submerged arc welding to weld to the spiral weld 105 between tube coupling with tube coupling, meanwhile, Y type groove is processed at the position to be welded between tube coupling and tube coupling, is conducive to different materials and adopts different welding methods.Thus roll into a kind of double metal spiral welded steel pipe.Then lower half portion of steel pipe inner wall and water line auxiliary with lower portion welding in steel band.When steel pipe spiral rolls after welding reaches requirement length, by steel pipe cutting, then by steel band 101 main between the convex tendon otch 106 at steel pipe two ends with auxiliary in the gap 600 of steel band 200 weld.Fill plain concrete or reinforced concrete inward from steel pipe one end convex tendon otch 106 again, until flow out from steel pipe the other end convex tendon otch 106, be then full of concrete 400 in hollow cavity; Finally complete double metal spiral steel pipe manufacturing of the present invention, as shown in figure 17.
Claims (9)
1. a double metal spiral steel pipe, it is characterized in that: comprise body (100), described body (100) outwardly extends to form the convex tendon (102) arranged along tube wall spiral, this convex tendon (102) forms groove (103) with body (100) surface, and be provided with the auxiliary interior steel band (200) that can cover groove (103) notch, hollow cavity (300) is formed between described groove (103) and auxiliary interior steel band (200), and this hollow cavity (300) interior fill concrete (400).
2. double metal spiral steel pipe according to claim 1, is characterized in that: described auxiliary interior steel band (200) covers whole body (100) inwall.
3. double metal spiral steel pipe according to claim 1, is characterized in that: in described assisting, be also provided with the shutoff steel band (500) for shutoff groove (103) notch between steel band (200) and groove (103).
4. a double metal spiral steel pipe, it is characterized in that: comprise body (100), described body (100) outwardly extends to form the convex tendon (102) arranged along tube wall spiral, this convex tendon (102) and body (100) form groove (103), and be provided with the shutoff steel band (500) that can cover groove (103) notch, hollow cavity (300) is formed between described groove (103) and shutoff steel band (500), and this hollow cavity (300) interior fill concrete (400), simultaneously, the inboard wall of tube body being positioned at below water line is provided with auxiliary steel band (200).
5. the double metal spiral steel pipe according to claim 1 or 4, is characterized in that: the cross section of described convex tendon (102) is Ω shape, grooved, waveform, semicircle, parabola shaped or trapezoidal.
6. the double metal spiral steel pipe according to claim 1 or 4, is characterized in that: the material of described auxiliary interior steel band (200) is Special Alloy Steel, stainless steel, Wear Resisting Steel, aluminium or copper; The material of described body (100) is carbon steel or stainless steel.
7. double metal spiral steel pipe according to claim 1, it is characterized in that: described body (100) by the main steel band (101) simultaneously having at least one row's convex tendon (102), another side correspondence forms groove (103), and forms for the common helically coiling of auxiliary interior steel band (200) covering this groove (103) notch.
8. the making method of double metal spiral steel pipe according to claim 1, is characterized in that comprising the steps:
A, prepare main steel band (101) and auxiliary in steel band (200);
B, this main steel band (101) have the first opposite side (107) and the second opposite side (108), main steel band (101) is bent into the steel band of band convex tendon (102), this convex tendon (102) is arranged along the first opposite side (107) interval of main steel band (101), and consistent with the length of the second opposite side (108), and form groove (103) with main steel band (101);
C, will assist in steel band (200) fit in main steel band groove (103) notch position, to form compound steel band, form hollow cavity (300) between described convex tendon (102) and auxiliary interior steel band (200) simultaneously;
D, this compound ribbon spiral winding is formed the body (100) of band spirality hollow cavity;
E, on request length cut off body (100), the gap (600) in the incision at body (100) two ends convex tendon (102) is welded main steel band (101) and be auxiliary between steel band (200);
F, incision cast concrete (400) from body (100) one end convex tendon (102), until concrete (400) flows out from the incision of this body (100) the other end convex tendon (102), hollow cavity is full of concrete in (300), namely completes making.
9. the making method of double metal spiral steel pipe according to claim 8, it is characterized in that: in step C, shutoff steel band (500) is first used to fit in the notch place of main steel band groove (103), steel band (200) in the upper laminating of shutoff steel band (500) is auxiliary again, to form compound steel band, then according to A-F step, steel pipe manufacturing is completed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510600760.0A CN105156771B (en) | 2015-09-18 | 2015-09-18 | Double metal spiral steel pipe and preparation method thereof |
| PCT/CN2016/082936 WO2017045426A1 (en) | 2015-09-18 | 2016-05-22 | Bimetal spiral steel pipe and manufacturing method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510600760.0A CN105156771B (en) | 2015-09-18 | 2015-09-18 | Double metal spiral steel pipe and preparation method thereof |
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| CN105156771A true CN105156771A (en) | 2015-12-16 |
| CN105156771B CN105156771B (en) | 2016-09-28 |
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| WO2017045426A1 (en) * | 2015-09-18 | 2017-03-23 | 南京联众建设工程技术有限公司 | Bimetal spiral steel pipe and manufacturing method therefor |
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| KR102305430B1 (en) * | 2019-12-11 | 2021-09-27 | 주식회사 포스코 | Spiral Tube |
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| JPS5121559A (en) * | 1974-08-19 | 1976-02-20 | Nippon Steel Corp | RASENJOHOGOZAITSUKINZOKUKANNO SEIZOHOHO |
| KR100718869B1 (en) * | 2007-01-03 | 2007-05-16 | 대한강관 주식회사 | Steel ribbed pipe |
| KR101206104B1 (en) * | 2012-07-13 | 2012-12-03 | 주식회사 보국산업 | A steel ribbed pipe for preventing water leak |
| CN105156771B (en) * | 2015-09-18 | 2016-09-28 | 南京联众建设工程技术有限公司 | Double metal spiral steel pipe and preparation method thereof |
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2015
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2016
- 2016-05-22 WO PCT/CN2016/082936 patent/WO2017045426A1/en active Application Filing
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| CN203404502U (en) * | 2013-06-09 | 2014-01-22 | 宝鸡石油钢管有限责任公司 | Spiral seam thermo-metal composite welded pipe |
| CN203431333U (en) * | 2013-08-23 | 2014-02-12 | 湖南双马新材料科技有限公司 | Double-layer metal tube with flat inner surface and provided with reinforcing ribs on outer surface |
| CN104266006B (en) * | 2014-09-18 | 2015-05-27 | 南京联众建设工程技术有限公司 | Spiral steel pipe with reinforcing rings and manufacturing method of spiral steel pipe |
| CN205173741U (en) * | 2015-09-18 | 2016-04-20 | 南京联众建设工程技术有限公司 | Bimetal spiral steel pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017045426A1 (en) * | 2015-09-18 | 2017-03-23 | 南京联众建设工程技术有限公司 | Bimetal spiral steel pipe and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017045426A1 (en) | 2017-03-23 |
| CN105156771B (en) | 2016-09-28 |
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Address after: 211215 Zhetang Town Industrial Park, Lishui District, Nanjing City, Jiangsu Province Patentee after: NANJING LIANZHONG ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 211215 No. 331 Zhening East Road, Zhetang Industrial Concentration Zone, Lishui Economic Development Zone, Nanjing City, Jiangsu Province Patentee before: NANJING LIANZHONG CONSTRUCTION ENGINEERING TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230801 Address after: No. 331 Zhening East Road, Lishui Economic Development Zone, Nanjing, Jiangsu Province, 211215 Patentee after: Nanjing Dade Steel Pipe Co.,Ltd. Address before: 211215 Zhetang Town Industrial Park, Lishui District, Nanjing City, Jiangsu Province Patentee before: NANJING LIANZHONG ENGINEERING TECHNOLOGY Co.,Ltd. |