CN104960084A - Encased concrete nodular cast iron pipe manufacturing device - Google Patents
Encased concrete nodular cast iron pipe manufacturing device Download PDFInfo
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- CN104960084A CN104960084A CN201510433235.4A CN201510433235A CN104960084A CN 104960084 A CN104960084 A CN 104960084A CN 201510433235 A CN201510433235 A CN 201510433235A CN 104960084 A CN104960084 A CN 104960084A
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- iron pipe
- ductile iron
- concrete
- bellmouth
- ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0038—Machines or methods for applying the material to surfaces to form a permanent layer thereon lining the outer wall of hollow objects, e.g. pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/30—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
- B28B1/32—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon by projecting, e.g. spraying
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses an encased concrete nodular cast iron pipe manufacturing device and relates to the technical field of nodular cast iron pipe manufacturing equipment. The device comprises a movable trolley and riding wheel sets arranged at the two ends of the trolley and driven by motors, wherein the two ends of a nodular cast iron pipe are erected on the riding wheel sets through a bellmouth rolling ring and a socket rolling ring respectively, a concrete roller shoot mechanism and a scraper sizing structure are arranged above the nodular cast iron pipe, a steel wire gauze feeding mechanism is arranged on one side of the nodular cast iron pipe, and band-shaped steel wire gauze can be wound around the nodular cast iron pipe coated with concrete in a spiral mode by means of the steel wire gauze feeding mechanism along with the rotation of the nodular cast iron pipe and the movement of the trolley; the scraper sizing structure is an arc-shaped plate matched with the outer circle of the nodular cast iron pipe, and a toothed plate and a fine scraping plate are arranged at the two ends of the arc-shaped plate respectively to be used for cutting off redundant concrete and trowelling grooves formed after cutting; in this way, surface roughness is improved, and the labor intensity of workers is relieved. The device is high in mechanization degree and capable of improving working efficiency and product quality.
Description
Technical field
The present invention relates to ductile iron pipe making apparatus technical field, particularly relate to a kind of external wrapping concrete ductile iron pipe producing device.
Background technology
Along with the increase of the raising to environmental requirement, excavation cost and limit the increasing of occasion that cannot excavate due to construction, people use non-excavation laying in the urgent need to research or cry without pipe trench laying technology.Document " external wrapping concrete ductile iron pipe " CN202708364 U just proposes a kind of external wrapping concrete ductile iron pipe in push pipe (a kind of without pipe trench laying technology) construction.The preparation method of this external wrapping concrete mainly contains three kinds: casting method, extrusion and spraying, and wherein, spraying is divided into again roller to penetrate method and gunite.At present, the making of ductile iron pipe external wrapping concrete mainly relies on mould casting craft; Extrusion is used for the making of continous way small dimension counterweight tube; Roller is penetrated method and is divided into again top-emission type and lateral type, among the making being seen in PCCP pipe and counterweight tube, as document " a kind of can prevent anticorrosive balance-weight pipe of weight coating slippage and preparation method thereof " CN 102620065 A; And gunite is used for the making of PCCP pipe, as document " low absorptivity Prestressed concrete cylinder pipe and preparation method ".
At present, the making of ductile iron pipe external wrapping concrete mainly relies on mould casting craft, i.e. the mould of cylinder type in ductile iron pipe outer cover, then casting concrete between, by vibrator jolt ramming, and the production technology of the demoulding after maintenance to some strength.This technique not only efficiency is low, and labor strength is also large, and also need often kind of specification to drop into a large amount of moulds, capital cost is larger.
Concrete heavy wall in the sprayed coating concrete making technology of PCCP pipe is thinner, generally in 20mm effect, compared with the thickness of external wrapping concrete ductile iron pipe, makes a big difference; And although counterweight tube can reach thicker emitted dose, the very poor and outside dimension of its outer surface quality cannot accurately ensure, and push pipe necessarily require external diameter accurately, smooth surface.In addition, with regard to ductile iron pipe specification, although PCCP pipe can produce heavy caliber pipe, it adopts the mode of vertical sprayed coating; And counterweight tube often specification is smaller, how at below DN1400, and the maximum specification of ductile iron pipe is DN2600.
Summary of the invention
Technical problem to be solved by this invention is to provide simple, the easy to operate external wrapping concrete ductile iron pipe producing device of a kind of structure, can reduce labor strength, ensures product quality, increases work efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of external wrapping concrete ductile iron pipe producing device, comprises mobile trolley used and is arranged on the support roller group at chassis two ends, and ductile iron pipe two ends are rolled ring and socket respectively by bellmouth and rolled ring stand and to be located in support roller group and rotatable; Described support roller group is driven by motor, concrete mortar coater structure is provided with and scraper plate sizing structure, side are provided with steel wire feed mechanism above described ductile iron pipe, along with the rotation of ductile iron pipe and the movement of chassis, utilize steel wire feed mechanism band-like steel silk screen can be spirally wrapped around on spray coated concrete ductile iron pipe.
Preferably, described scraper plate sizing structure is one piece of arc matched with ductile iron pipe cylindrical, and described arc two ends are respectively equipped with castellated plates and thin scraper plate, in order to excise the gully after any excess concrete and floating excision.
Preferably, described ductile iron pipe opposite side is provided with floating structure and cement paste injection component, and described cement paste injection component is arranged on the front of floating structure, and described floating structure and cement paste injection component are arranged on the opposite side of steel wire feed mechanism.
Preferably, described concrete mortar coater structure comprise a pair with the transfer roller of ductile iron pipe axis parallel, is provided with gap in the middle of two transfer rollers, concrete discharging opening is arranged on above gap, and concrete can be sprayed on outer surface of nodular cast iron pipe from two transfer roller gaps.
Preferably, described steel wire feed mechanism comprises the fixed pulley being arranged on ductile iron pipe side, and band-like steel silk screen end winding support is on ductile iron pipe, and the other end is walked around fixed pulley along with the rotation of ductile iron pipe and the movement of chassis and is wrapped on ductile iron pipe.
Preferably, described floating structure comprises the base plate being fixedly installed on ductile iron pipe side, and described base plate is fixed with rubber flap, and described cement paste injection component is spray gun, utilizes rubber flap the cement paste being ejected into concrete surface can be struck off.
Preferably, described bellmouth rolls ring side and is provided with and the platform of spheroidal graphite cast-iron tube faucet inner hole circle, and the platform circle external diameter that described bellmouth rolls ring is less than the bellmouth internal diameter of ductile iron pipe, and the internal diameter that socket rolls ring is greater than the socket outside diameter of ductile iron pipe; Described circle is laid with two row's bolts hole vertically, and described bellmouth rolls ring and is fixed in the bellmouth of ductile iron pipe by fastening bolt; It is circular that described socket rolls ring, and its periphery is laid with bolt hole, and described socket is rolled ring and is fixed on the socket periphery of ductile iron pipe by fastening bolt.
Preferably, described support roller group comprises active roller station group and driven support roller group, active roller station group is identical with the structure of driven support roller group, include a pair support roller be erected on chassis, wherein a support roller of active roller station group is driven by motor, two pairs of support rollers are symmetricly set on chassis two ends, are respectively equipped with to roll ring and socket with bellmouth and roll the flange that ring coordinates outside two pairs of support rollers, can prevent ductile iron pipe play.
Preferably, described bellmouth rolls on the left and right end face of ring and inside and outside circle and is equipped with lightening grooves.
The beneficial effect adopting technique scheme to produce is: utilize active roller station group and driven support roller group drive ball graphite cast iron pipe to rotate, moving horizontally by chassis simultaneously, concrete can be sprayed on Surface of Nodular Cast Iron Pipe by concrete mortar coater structure equably, ring is rolled and socket rolls ring to overcome the ovality of ductile iron pipe by the bellmouth being fixed on ductile iron pipe two ends, thus ensure the final cylindricity of product, as the arc of scraper plate sizing structure by the castellated plates at its two ends and thin scraper plate, excise the gully after any excess concrete and floating excision, improve product outer-diameter accuracy, band-like steel silk screen is spirally wrapped around on ductile iron pipe by steel wire feed mechanism, and be fixed in concrete layer, enhance concrete robustness, cement paste is injected in concrete surface by recycling spray gun, floating structural rubber flap is utilized to be struck off by cement paste subsequently, improve the roughness on surface, reduce the labour intensity of workman.The present invention has simple, the easy to operate advantage of structure, and mechanization degree is high, while increasing work efficiency, also improve product quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the enlarged drawing at C place in Fig. 1;
Fig. 4 is the enlarged drawing at D place in Fig. 1;
Fig. 5 is the A direction view in Fig. 2;
Fig. 6 is the B direction view in Fig. 2;
Fig. 7 is the E-E profile of Fig. 1;
In figure: 1-bellmouth rolls ring, 2-fastening bolt, 3-ductile iron pipe, 4-support roller group, 40-support roller, 41-flange, 42-lightening grooves, 5-chassis, 6-scraper plate sizing structure, 61-castellated plates, the thin scraper plate of 62-, 7-concrete mortar coater structure, 71-transfer roller, 8-socket rolls ring, 9-steel wire feed mechanism, 90-fixed pulley, 10-concrete discharging opening, the floating structure of 11-, 12-cement paste injection component, 13-band-like steel silk screen, 14-concrete layer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
A kind of external wrapping concrete ductile iron pipe producing device as shown in figs. 1-7, comprises mobile trolley used 5 and be arranged on the support roller group 4 at chassis 5 two ends, and ductile iron pipe 3 two ends are rolled ring 1 and socket respectively by bellmouth and rolled ring 8 and to be erected in support roller group 4 and rotatable; Described support roller group 4 is driven by motor, concrete mortar coater structure 7 is provided with and scraper plate sizing structure 6, side are provided with steel wire feed mechanism 9 above described ductile iron pipe 3, along with the rotation of ductile iron pipe 3 and the movement of chassis 5, utilize steel wire feed mechanism 9 band-like steel silk screen 13 can be spirally wrapped around on spray coated concrete ductile iron pipe 3.
Described scraper plate sizing structure 6 is one piece of arc matched with ductile iron pipe 3 cylindrical, and described arc two ends are respectively equipped with castellated plates 61 and thin scraper plate 62, in order to excise the gully after any excess concrete and floating excision.Scraper plate sizing structure 6 also can be an entirety, and its side contacted with ductile iron pipe 3 cylindrical is arc, only once scrapes concrete layer 14 surface and smears.
As a kind of preferred structure, described ductile iron pipe 3 opposite side is provided with floating structure 11 and cement paste injection component 12, described cement paste injection component 12 is arranged on the front of floating structure 11, and described floating structure 11 and cement paste injection component 12 are arranged on the opposite side of steel wire feed mechanism 9.
Described concrete mortar coater structure 7 comprise a pair with the transfer roller 71 of ductile iron pipe 3 axis parallel, gap is provided with in the middle of two transfer rollers 71, concrete discharging opening 10 is arranged on above gap, concrete can be sprayed on ductile iron pipe 3 outer surface from two transfer roller 71 gaps, can be sprayed on equably on pipe outer wall with the rotation concrete of ductile iron pipe 3 along with chassis 5 moves.
In order to the tightness of Concrete Structure layer 14, steel wire feed mechanism 9 can be utilized in concrete layer 14 to add steel wire, play the effect of reinforcement.Described steel wire feed mechanism 9 comprises the fixed pulley 90 being arranged on ductile iron pipe 3 side, band-like steel silk screen 13 end winding support is on ductile iron pipe 3, and the other end is walked around fixed pulley 90 and to be spirally wrapped around on ductile iron pipe along with the rotation of ductile iron pipe 3 and the movement of chassis 5 and to be fixed in concrete layer 14.
Described floating structure 11 comprises the base plate being fixedly installed on ductile iron pipe 3 side, and described base plate is fixed with rubber flap, and described cement paste injection component 12 is spray gun, utilizes rubber flap the cement paste being ejected into concrete surface can be struck off.Utilize spray gun after the outer jet cement of concrete layer 14 of ductile iron pipe 3 is starched only, cement paste strikes off by the rubber flap recycling floating structure 11, improves the surface roughness of product.Manual hanging technique before utilizing lance ejection cement paste alternative, reduces the labour intensity of workman, raises labour efficiency.Cement paste injection component 12 also can hanging technique by hand realize.
Roll ring 1 and socket to make bellmouth to roll ring 8 and coordinate with ductile iron pipe 3 fixing better, roll ring 1 side at bellmouth and be provided with the platform circle with ductile iron pipe 3 bellmouth inner hole, the platform circle external diameter that described bellmouth rolls ring 1 is less than the bellmouth internal diameter of ductile iron pipe 3, and the internal diameter that socket rolls ring 8 is greater than the socket outside diameter of ductile iron pipe 3; Described circle is laid with two row's bolts hole vertically, and described bellmouth is rolled ring 1 and is fixed on by fastening bolt 2 in the bellmouth of ductile iron pipe 3; Described socket rolls ring 8 for circular, and its periphery is laid with bolt hole, described socket rolls ring 8 and is fixed on the socket periphery of ductile iron pipe 3 by fastening bolt 2, makes bellmouth roll ring 1 and socket and roll ring 8 and keep coaxial after installing.
Described support roller group 4 comprises active roller station group and driven support roller group, active roller station group is identical with the structure of driven support roller group, include a pair support roller 40 be erected on chassis, wherein a support roller 40 of active roller station group is driven by motor, two pairs of support rollers 40 are symmetricly set on chassis 5 two ends, motor drives a support roller of active roller station group to rotate, and then drives other 3 support rollers 40 to rotate, thus drives ductile iron pipe 3 to rotate; Be respectively equipped with outside two pairs of support rollers 40 and roll ring 1 and socket with bellmouth and roll the flange 41 that ring 8 coordinates, ductile iron pipe 3 can be fixed on support roller 40 well.Because ductile iron pipe 3 exists the problem of reduced scale and ovality, bellmouth rolls ring 1 end platform circle and adopts built-in fixed structure, and for reducing outside dimension, bellmouth rolls the large cylindrical 2-10mm larger than bellmouth external diameter of ring 1; Socket rolls ring 8 and adopts external fixed structure, utilize fastening bolt 2 respectively bellmouth to be rolled ring 1 and socket to roll ring 8 and be fixed on ductile iron pipe 3 two ends, cylindrical that ring 1 and socket roll ring 8 coordinates with support roller 40 cylindrical the effect played and correct ductile iron pipe 3 cylindricity to utilize bellmouth to roll; Adopt at ductile iron pipe 3 bellmouth position variable sprayed coating to control simultaneously, regulate the rotary speed of chassis 5 translational speed and ductile iron pipe 3, make concrete be sprayed on bellmouth outer wall as far as possible, to reduce skin patching amount, improve work situation.
Described bellmouth rolls on the left and right end face of ring 1 and inside and outside circle and is equipped with lightening grooves 42, can alleviate the overall weight that bellmouth rolls ring 1, be convenient to remove and install.
Its course of work is summarized as follows: 1) in advance at ductile iron pipe 3 socket welded flange and gusset; 2) at the bellmouth of ductile iron pipe 3 and socket, bellmouth is installed respectively and rolls ring 1 and socket rolls ring 8, and adjust bellmouth and roll the axiality that ring 1 and socket roll ring 8, for overcoming the ellipse of ductile iron pipe, improving beating of ductile iron pipe, also can dodge the border that concrete roller is penetrated simultaneously; 3) assembling bellmouth is rolled the ductile iron pipe 3 that ring 1 and socket roll ring 8 and hang in mobile trolley used 5, utilize the support roller group 4 on mobile trolley used 5 can realize ductile iron pipe 3 around the rotary motion of axial line and feed motion in the axial direction; 4) concrete sprayed coating and exiting: along with rotation and the feeding of ductile iron pipe 3, concrete mortar coater structure 7 uniformly by concrete spray on ductile iron pipe 3 surface, after concrete layer 14 sprayed coating completes, chassis 5 exits sprayed coating station; 5) ductile iron pipe 3 hangs in lower station, and dismounting bellmouth rolls ring 1 and socket rolls ring 8; 6) health; 7) ductile iron pipe 3 hangs in the station that repairs a die and repairs a die; 8) packaging warehouse-in.
Active roller station group and driven support roller group drive ball graphite cast iron pipe 3 is utilized to rotate, horizontal axis simultaneously by chassis 5 moves, concrete can be sprayed on ductile iron pipe 3 on the surface by concrete mortar coater structure 7 equably, ring 1 is rolled and socket rolls ring 8 to overcome the ovality of ductile iron pipe 3 by the bellmouth being fixed on ductile iron pipe 3 two ends, thus ensure the final cylindricity of product, as the arc of scraper plate sizing structure 6 by the castellated plates 61 at its two ends and thin scraper plate 62, excise the gully after any excess concrete and floating excision, improve product outer-diameter accuracy, band-like steel silk screen 13 is spirally wrapped around on ductile iron pipe 3 by steel wire feed mechanism 9, and be fixed in concrete layer 14, enhance the robustness of concrete layer, cement paste is injected in concrete surface by recycling spray gun, the rubber flap cement paste in floating structure 11 is utilized to strike off subsequently, improve the roughness on surface, reduce the labour intensity of workman.
In sum, the present invention has simple, the easy to operate advantage of structure, and mechanization degree is high, improves the roughness of product surface, reduces the labour intensity of workman, does not get rid of manual hanging technique simultaneously.The present invention adopts concrete sprayed coating mode, easy to use, easily is automated, and saves equipment investment, and raising production rate, raising utilization rate of equipment and installations that can be very large, also improve product quality while increasing work efficiency.
Claims (9)
1. an external wrapping concrete ductile iron pipe producing device, it is characterized in that: comprise mobile trolley used (5) and be arranged on the support roller group (4) at chassis (5) two ends, ductile iron pipe (3) two ends are rolled ring (1) and socket respectively by bellmouth and are rolled ring (8) to be erected at support roller group (4) upper and rotatable; Described support roller group (4) is driven by motor, described ductile iron pipe (3) top is provided with concrete mortar coater structure (7) and scraper plate sizing structure (6), side are provided with steel wire feed mechanism (9), along with the rotation of ductile iron pipe (3) and the movement of chassis (5), utilize steel wire feed mechanism (9) band-like steel silk screen (13) can be spirally wrapped around on spray coated concrete ductile iron pipe (3).
2. external wrapping concrete ductile iron pipe producing device according to claim 1, it is characterized in that: described scraper plate sizing structure (6) is one piece of arc matched with ductile iron pipe (3) cylindrical, described arc two ends are respectively equipped with castellated plates (61) and thin scraper plate (62), in order to excise the gully after any excess concrete and floating excision.
3. external wrapping concrete ductile iron pipe producing device according to claim 2, it is characterized in that: described ductile iron pipe (3) opposite side is provided with floating structure (11) and cement paste injection component (12), described cement paste injection component (12) is arranged on the front of floating structure (11), and described floating structure (11) and cement paste injection component (12) are arranged on the opposite side of steel wire feed mechanism (9).
4. external wrapping concrete ductile iron pipe producing device according to claim 1, it is characterized in that: described concrete mortar coater structure (7) comprise a pair with the transfer roller (71) of ductile iron pipe (3) axis parallel, gap is provided with in the middle of two transfer rollers (71), concrete discharging opening (10) is arranged on above gap, and concrete can be sprayed on ductile iron pipe (3) outer surface from two transfer rollers (71) gap.
5. external wrapping concrete ductile iron pipe producing device according to claim 1, it is characterized in that: described steel wire feed mechanism (9) comprises the fixed pulley (90) being arranged on ductile iron pipe (3) side, band-like steel silk screen (13) end winding support is on ductile iron pipe (3), and the other end is walked around fixed pulley (90) along with the rotation of ductile iron pipe (3) and the movement of chassis (5) and is wrapped on ductile iron pipe (3).
6. external wrapping concrete ductile iron pipe producing device according to claim 3, it is characterized in that: described floating structure (11) comprises the base plate being fixedly installed on ductile iron pipe (3) side, described base plate is fixed with rubber flap, described cement paste injection component (12) is spray gun, utilizes rubber flap the cement paste being ejected into concrete layer (14) surface can be struck off.
7. external wrapping concrete ductile iron pipe producing device according to claim 3, it is characterized in that: described bellmouth rolls ring (1) side and is provided with the platform circle with ductile iron pipe (3) bellmouth inner hole, the platform circle external diameter that described bellmouth rolls ring (1) is less than the bellmouth internal diameter of ductile iron pipe (3), and the internal diameter that socket rolls ring (8) is greater than the socket outside diameter of ductile iron pipe (3); Described circle is laid with two row's bolts hole vertically, and described bellmouth rolls ring (1) and is fixed in the bellmouth of ductile iron pipe (3) by fastening bolt (2); Described socket rolls ring (8) for circular, and its periphery is laid with bolt hole, and described socket is rolled ring (8) and is fixed on the socket periphery of ductile iron pipe (3) by fastening bolt (2).
8. external wrapping concrete ductile iron pipe producing device according to claim 7, it is characterized in that: described support roller group (4) comprises active roller station group and driven support roller group, active roller station group is identical with the structure of driven support roller group, include a pair support roller (40) be erected on chassis, wherein a support roller (40) of active roller station group is driven by motor, two pairs of support rollers (40) are symmetricly set on chassis (5) two ends, and the two pairs of support rollers (40) outside is respectively equipped with to roll ring (1) and socket and roll the flange (41) that ring (8) coordinates with bellmouth.
9. external wrapping concrete ductile iron pipe producing device according to claim 1, is characterized in that: described bellmouth rolls on the left and right end face of ring (1) and inside and outside circle and is equipped with lightening grooves (42).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510433235.4A CN104960084B (en) | 2015-07-22 | 2015-07-22 | External wrapping concrete ductile iron pipe producing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510433235.4A CN104960084B (en) | 2015-07-22 | 2015-07-22 | External wrapping concrete ductile iron pipe producing device |
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| CN104960084A true CN104960084A (en) | 2015-10-07 |
| CN104960084B CN104960084B (en) | 2017-03-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160549A (en) * | 2017-07-14 | 2017-09-15 | 扬州起航机械有限公司 | A kind of Suspension rolling machine |
| CN107442386A (en) * | 2017-08-30 | 2017-12-08 | 新兴铸管股份有限公司 | Ductile iron pipe inner coating process |
| CN108789794A (en) * | 2018-05-31 | 2018-11-13 | 新疆国统管道股份有限公司 | PCCP spraying systems and its application |
| CN109591206A (en) * | 2018-12-20 | 2019-04-09 | 巫溪县玉帛石材有限公司 | The making apparatus and manufacture craft of a kind of crystal face stone material |
| CN109624059A (en) * | 2018-12-20 | 2019-04-16 | 重庆市和利源石材有限公司 | A kind of cylinder stone material crystal face producing device and manufacture craft |
| CN113681707A (en) * | 2021-07-19 | 2021-11-23 | 莫远志 | Manufacturing equipment of high-temperature heat-resistant pipe for non-ferrous metal smelting by extrusion method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107442386B (en) * | 2017-08-30 | 2020-09-22 | 新兴铸管股份有限公司 | Internal coating process for nodular cast iron pipe |
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| CN108789794B (en) * | 2018-05-31 | 2024-02-27 | 新疆国统管道股份有限公司 | PCCP (prestressed concrete cylinder pipe) guniting system and application thereof |
| CN109591206A (en) * | 2018-12-20 | 2019-04-09 | 巫溪县玉帛石材有限公司 | The making apparatus and manufacture craft of a kind of crystal face stone material |
| CN109624059A (en) * | 2018-12-20 | 2019-04-16 | 重庆市和利源石材有限公司 | A kind of cylinder stone material crystal face producing device and manufacture craft |
| CN113681707A (en) * | 2021-07-19 | 2021-11-23 | 莫远志 | Manufacturing equipment of high-temperature heat-resistant pipe for non-ferrous metal smelting by extrusion method |
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| CN104960084B (en) | 2017-03-08 |
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