CN102979964A - Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof - Google Patents
Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof Download PDFInfo
- Publication number
- CN102979964A CN102979964A CN2011102629601A CN201110262960A CN102979964A CN 102979964 A CN102979964 A CN 102979964A CN 2011102629601 A CN2011102629601 A CN 2011102629601A CN 201110262960 A CN201110262960 A CN 201110262960A CN 102979964 A CN102979964 A CN 102979964A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- steel tube
- frp material
- frp
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention provides a fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof. The FRP material and stainless steel tube composite comprises a stainless steel tube and FRP material fastened on the outer surface of the stainless steel tube. According to the FRP material and stainless steel tube composite and the preparation technology thereof, under the condition that all performance indices of the FRP material and stainless steel tube composite are guaranteed, the thickness of the wall of the stainless steel tube is effectively reduced, material cost and material weight are reduced, and the adoption of the FRP material meets requirements of environment protection and resource-conserving society development.
Description
Technical field
The present invention relates to a kind of multi-field FRP Material cladding Stainless Steel Tube and preparation procesies thereof such as medical apparatus, Drinking Water, chemical discharge opeing that can be used for.
Background technique
Stainless Steel Tube is safe and reliable, hygienic environment-protecting, economic and practical, makes it have the irreplaceable advantage of other tubing, and the application meeting in the engineering is more and more universal.
Along with the enforcement of China's policies of reform and opening to the outside world, national economy obtains rapid growth, and cities and towns dwelling house, public building and tourist facilities are built in a large number, and hot water supply and domestic water supply have been proposed Secretary.Quality problem particularly, people more and more pay attention to, and require also to improve constantly.This tubing commonly used of Coating Steel Pipe will step down from the stage of history gradually because of its susceptibility-to-corrosion; Plastic tube, composite pipe and copper pipe have become the tubing commonly used of pipe-line system.But in many cases, Stainless Steel Tube has more superiority, and thin-wall stainless steel is in drink water system, water heating system and with other demanding system that feeds water, and has safe and reliable, hygienic environment-protecting, the characteristics such as economic and practical.Thin-wall stainless steel is proved one of water supply system combination property tubing best, novel, energy-conservation and environment protection type by project practices at home and abroad, also be a kind of very competitive water-feeding pipes, will be to improving water quality, improving people's living standard and bring into play unrivaled effect.
Stainless Steel Tube is durable in use, but its cost is higher, and the parties concerned all from reducing wall thickness, reducing and set about in price research, are beneficial to further popularization.
Summary of the invention
The objective of the invention is the higher technical problem of cost in order to solve existing Stainless Steel Tube thickness greatly, the present invention mainly takes following technological scheme.
The invention provides a kind of FRP Material cladding Stainless Steel Tube, comprise Stainless Steel Tube, be fastened on the FRP material of described Stainless Steel Tube outer surface.
Preferentially, described FRP material is unidirectional fiber material.
Preferentially, described FRP material also comprises multidirectional fiber woven material, and described multidirectional fiber woven material is between described Stainless Steel Tube and described unidirectional fiber material.
Preferentially, described multidirectional fiber woven material is fabric or twines the two-way fibrous structure layer that forms.
Preferentially, the thickness of described Stainless Steel Tube is 0.5mm.
Preferentially, the thickness of described Stainless Steel Tube is 0.2mm.
Preferentially, the thickness of described FRP material is 2~3mm; Described unidirectional fiber material comprises reinforcing fiber and resin.
Preferentially, described reinforcing fiber is any one in glass fibre, aramid fibre, polyvinyl fiber, basalt fibre, carbon fiber, ramee, flax fiber, the jute fiber.
Preferentially, described resin is any one in the unsaturated resin, epoxy resin, vinyl ester resins in the thermosetting resin.
The present invention also provides a kind of preparation process of FRP Material cladding Stainless Steel Tube, comprise send that yarn, impregnation, the collection of filaments, Stainless Steel Tube are inserted, pre-shaping, traction, solidifying, cutting action.
With respect to prior art, the invention has the beneficial effects as follows: in the situation that guarantees FRP Material cladding Stainless Steel Tube property indices, effectively reduce the wall thickness of Stainless Steel Tube, reduce cost of material and material weight; And adopt the FRP material to meet environmental protection, conservation-minded society's growth requirement.
Description of drawings
Fig. 1 is the structural representation of the FRP material of the present invention FRP Material cladding Stainless Steel Tube that is unidirectional fiber material;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of the FRP material of the present invention FRP Material cladding Stainless Steel Tube that is unidirectional fiber material and multidirectional fiber woven material;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is preparation process's schematic representation of a kind of FRP Material cladding of the present invention Stainless Steel Tube.
Among Fig. 1 to Fig. 5: fiber creel 1, threading board 2, resin storage tank 3, buncher 4, pre-shaping device 5, shaping die and winding head 6, the device 7 that is heating and curing, traction gear 8, cutting device 9, unidirectional fiber material 10, multidirectional fiber woven material 11, Stainless Steel Tube 20.
Embodiment
Below in conjunction with drawings and Examples technological scheme of the present invention is explained in detail.
FRP is the abbreviation of Fiber Reinforced polymer (fibre reinforced materials).
As shown in Figures 1 to 4, the invention provides a kind of FRP Material cladding Stainless Steel Tube, comprise Stainless Steel Tube 20, be fastened on the FRP material of described Stainless Steel Tube 20 outer surfaces.In the situation that guarantees FRP Material cladding Stainless Steel Tube property indices, effectively reduce the wall thickness of Stainless Steel Tube 20, reduce cost of material and material weight; And adopt the FRP material to meet environmental protection, conservation-minded society's growth requirement.The FRP Material cladding Stainless Steel Tube that the present invention produces, the FRP material is that smooth shape makes between the tubing and can connect by insertion, has solved well the narrow limitation of pipe applications.
FRP Material cladding Stainless Steel Tube is that Stainless Steel Tube 20 places this FRP material middle by 4 pultrusions are pre-formed as cylindrical FRP material at the stainless steel outer surface through buncher with reinforcing fiber and resin compound.As depicted in figs. 1 and 2, described FRP material can be unidirectional fiber material 10.Also can be as shown in Figure 3 and Figure 4, described FRP material comprises unidirectional fiber material 10 and multidirectional fiber woven material 11, described multidirectional fiber woven material 11 is between described Stainless Steel Tube and described unidirectional fiber material 10.Described multidirectional fiber woven material 11 is fabric or twines the two-way fibrous structure layer that forms.Unidirectional fiber material 10 of the present invention and multidirectional fiber woven material 11 are the definition of macroshape, and unidirectional fiber material 10 finger macroshapes are characterized by the material of same direction; Multidirectional fiber woven material 11 finger macroshapes are characterized by at least material of the fibrage more than the both direction.Both all are that unidirectional fibre consists of on microcosmic for unidirectional fiber material 10 and multidirectional fiber woven material 11.Wherein unidirectional fiber material 10 provides radial strength for FRP Material cladding Stainless Steel Tube, and multidirectional fiber woven material 11 guarantees the hoop mechanical property of FRP Material cladding Stainless Steel Tube.
Described Stainless Steel Tube 20 thickness 〉=0.2mm, the thickness that can select described Stainless Steel Tube 20 is 0.5mm, preferably the thickness of Stainless Steel Tube 20 is 0.2mm; Thickness 〉=the 1mm of described FRP material, preferably the thickness of described FRP material is 2~3mm.The present invention adopts 0.2mm thick Stainless Steel Tube 20 to support as inwall, Stainless Steel Tube 20 guarantees its corrosion resistance, the performances such as internal pressure-resistant change consumption, thickness or the material of outsourcing FRP material by the product specification requirement, can effectively guarantee under the condition of the corrosion resistance of tubing and every mechanical property requirements, reduce cost of material and material weight, provide cost advantage and weight advantage for product uses.
Described unidirectional fiber material 10 comprises reinforcing fiber and resin.The weight percentage of reinforcing fiber is 75%, and the weight percentage of resin is 25%.Described reinforcing fiber is any one in glass fibre, aramid fibre, polyvinyl fiber, basalt fibre, carbon fiber, ramee, flax fiber, the jute fiber.Described resin is any one in the unsaturated resin, epoxy resin, vinyl ester resins in the thermosetting resin.
The present invention take the FRP material be unidirectional fiber material 10 as example, wherein glass fibre is reinforcing fiber, take vinyl ester resins as matrix resin, gets FRP Material cladding Stainless Steel Tube by pultrusion heat cure moulding process preparation.
Wherein, the vinyl ester resins glue is to be mixed by vinyl ester resins, coupling agent, benzoyl peroxide, peroxidized t-butyl perbenzoate, vinyl benzene, filler and mill base; Wherein, get parts by weight and be 100 parts vinyl ester resins, at the parts by weight that add other each component be: coupling agent 0.5-3.0 part, benzoyl peroxide 0.2-1.0 part, peroxidized t-butyl perbenzoate 0.8-1.8 part, vinyl benzene 2-10 part, filler 3-10 part and mill base 0.5-1.5 part.
FRP Material cladding Stainless Steel Tube mainly prepares moulding process can be divided into following preparation section:
Send the yarn → impregnation → collection of filaments → Stainless Steel Tube to insert → pre-shaping → traction → solidifying → cutting
The preparation process of FRP Material cladding Stainless Steel Tube of the present invention adopts traditional pultrusion heat cure moulding process, and Plant reconstruction plant modernization requires little, can produce at existing pultrusion Wiring apparatus, and application prospect is extensive.
Specifically describe forming preparation process of the present invention below in conjunction with accompanying drawing 5:
(1) described glass fibre places on the fiber creel 1, draws several the hole share split tractions of entrying by threading board 2, under the effect of tractive force, enters resin storage tank 3 and carries out impregnation, and glue is above-mentioned vinyl ester resins glue;
(2) glass fibre behind the impregnation is extruded fiber resin adhesive liquid more than needed by buncher 4 and pre-shaping device 5 successively under the effect of tractive force, Stainless Steel Tube 20 is placed to the middle of glass fibre simultaneously, Stainless Steel Tube 20 with the glass fibre behind the impregnation by tractor toward front haulage, under the effect of the extrusion die of pre-shaping device 5, glass fibre and resin blend thing are in the braiding of Stainless Steel Tube 20 outer surfaces and tentatively be shaped to columniform FRP material shape;
(3) preformed cylindrical FRP material through shaping die and winding head 6, is further extruded resin adhesive liquid more than needed again;
(4) the FRP Material cladding Stainless Steel Tube of process above-mentioned steps is under the effect of tractive force, enter the device 7 that is heating and curing, shaping die and winding head 6 and the device 7 that is heating and curing are provided with heating plate, the FRP material generation curing reaction that is heated under the temperature that sets, finally obtaining configuration of surface is the FRP Material cladding Stainless Steel Tube of smooth shape.
(5) last FRP Material cladding Stainless Steel Tube draws to cutting device 9 through traction gear 8 and cuts into satisfactory FRP composite stainless steel pipe finished product.
When another embodiment of the present invention comprises unidirectional fiber material 10 and multidirectional fiber woven material 11 take the FRP material as example, wherein glass fibre is reinforcing fiber, take vinyl ester resins as matrix resin, multidirectional fiber woven material 11 adopts the two-way fibrous structure layer that forms through twining, and gets FRP Material cladding Stainless Steel Tube by the preparation of pultrusion heat cure moulding process.
Preparation process is basic identical with last preparation process, just when (2) step Stainless Steel Tube 20 is placed to the middle of glass fibre, Stainless Steel Tube 20 outer surfaces of this moment are tied with two-way fibrous structure layer, and namely Stainless Steel Tube 20 all is to have twined multidirectional fiber woven material 11 just to enter (2) step.
Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is only limited to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. FRP Material cladding Stainless Steel Tube is characterized in that: comprise Stainless Steel Tube, be fastened on the FRP material of described Stainless Steel Tube outer surface.
2. FRP Material cladding Stainless Steel Tube according to claim 1, it is characterized in that: described FRP material is unidirectional fiber material.
3. FRP Material cladding Stainless Steel Tube according to claim 2, it is characterized in that: described FRP material also comprises multidirectional fiber woven material, described multidirectional fiber woven material is between described Stainless Steel Tube and described unidirectional fiber material.
4. FRP Material cladding Stainless Steel Tube according to claim 3 is characterized in that: described multidirectional fiber woven material is fabric or twines the two-way fibrous structure layer that forms.
5. FRP Material cladding Stainless Steel Tube according to claim 1, it is characterized in that: the thickness of described Stainless Steel Tube is 0.5mm.
6. FRP Material cladding Stainless Steel Tube according to claim 1, it is characterized in that: the thickness of described Stainless Steel Tube is 0.2mm.
7. FRP Material cladding Stainless Steel Tube according to claim 2, it is characterized in that: the thickness of described FRP material is 2~3mm; Described unidirectional fiber material comprises reinforcing fiber and resin.
8. FRP Material cladding Stainless Steel Tube according to claim 7, it is characterized in that: described reinforcing fiber is any one in glass fibre, aramid fibre, polyvinyl fiber, basalt fibre, carbon fiber, ramee, flax fiber, the jute fiber.
9. FRP Material cladding Stainless Steel Tube according to claim 7 is characterized in that: described resin is any one in the unsaturated resin, epoxy resin, vinyl ester resins in the thermosetting resin.
10. the preparation process of the described FRP Material cladding of any one Stainless Steel Tube according to claim 1-9 is characterized in that: comprise send that yarn, impregnation, the collection of filaments, Stainless Steel Tube are inserted, pre-shaping, traction, solidifying, cutting action.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011102629601A CN102979964A (en) | 2011-09-07 | 2011-09-07 | Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011102629601A CN102979964A (en) | 2011-09-07 | 2011-09-07 | Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN102979964A true CN102979964A (en) | 2013-03-20 |
Family
ID=47854232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011102629601A Pending CN102979964A (en) | 2011-09-07 | 2011-09-07 | Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102979964A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103413640A (en) * | 2013-05-31 | 2013-11-27 | 镇江天信电器有限公司 | Composite insulating tube for electrical appliances |
CN103612406A (en) * | 2013-10-23 | 2014-03-05 | 桐乡市恒力电力器材厂 | Processing device for insulating tube and preparation method of the insulating tube |
CN104100777A (en) * | 2013-04-08 | 2014-10-15 | 上海启鹏工程材料科技有限公司 | FRP (fiber reinforced plastic) reinforced fiber composite metal pipe as well as manufacturing equipment and manufacturing method of FRP reinforced fiber composite metal pipe |
CN104112689A (en) * | 2013-04-18 | 2014-10-22 | Ap系统股份有限公司 | Crossbeam and equipment used for processing substrate |
CN105619951A (en) * | 2015-12-25 | 2016-06-01 | 耀奇鑫科技(深圳)有限公司 | Mixed-reinforced-fiber and galvanized-steel composite material and preparing technology thereof |
CN105619950A (en) * | 2015-12-25 | 2016-06-01 | 耀奇鑫科技(深圳)有限公司 | Mixed-reinforced-fiber and alloy composite material and preparing technology thereof |
CN106592768A (en) * | 2017-01-22 | 2017-04-26 | 北京工业大学 | FRP composite structure of built-in complex cross section profile steel |
CN106639122A (en) * | 2017-01-22 | 2017-05-10 | 北京工业大学 | FRP (fiber reinforced plastics) composite structure with embedded closed section steel |
CN106801471A (en) * | 2017-01-22 | 2017-06-06 | 北京工业大学 | A kind of FRP composite constructions of open type complex section shaped steel |
CN107060820A (en) * | 2017-01-22 | 2017-08-18 | 北京工业大学 | A kind of FRP composite lining structures of embedded steel core |
CN109506053A (en) * | 2018-12-17 | 2019-03-22 | 巢湖鹏远金属焊管有限公司 | A kind of stainless steel composite pipe of wear resistant corrosion resistant |
CN109707918A (en) * | 2018-12-17 | 2019-05-03 | 巢湖鹏远金属焊管有限公司 | A kind of stainless steel pipe surface processing method |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1208144A (en) * | 1998-07-24 | 1999-02-17 | 侯贤忠 | GRP-thin wall stainless steel composite pipe and its making process |
CN2614301Y (en) * | 2003-04-30 | 2004-05-05 | 张乾光 | Stainless steel and glass reinforced plastic multiple-unit tube |
CN201014066Y (en) * | 2006-11-30 | 2008-01-30 | 姜笃林 | Metallic composite tube or pipe |
CN201021738Y (en) * | 2007-05-15 | 2008-02-13 | 上海华夏化工材料有限公司 | A carbon fiber rosin compound steel pipe |
CN201021739Y (en) * | 2007-03-14 | 2008-02-13 | 吴发东 | Fiber enhanced plastic steel compound pipe |
CN101134369A (en) * | 2006-09-01 | 2008-03-05 | 深圳市海川实业股份有限公司 | Technique of preparing FRP fibre-reinforced composite material bar |
JP2010236537A (en) * | 2009-03-10 | 2010-10-21 | Shinko Metal Products Kk | Laminated composite tube |
CN202209482U (en) * | 2011-09-07 | 2012-05-02 | 上海启鹏工程材料科技有限公司 | FRP material composite stainless steel pipe |
-
2011
- 2011-09-07 CN CN2011102629601A patent/CN102979964A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1208144A (en) * | 1998-07-24 | 1999-02-17 | 侯贤忠 | GRP-thin wall stainless steel composite pipe and its making process |
CN2614301Y (en) * | 2003-04-30 | 2004-05-05 | 张乾光 | Stainless steel and glass reinforced plastic multiple-unit tube |
CN101134369A (en) * | 2006-09-01 | 2008-03-05 | 深圳市海川实业股份有限公司 | Technique of preparing FRP fibre-reinforced composite material bar |
CN201014066Y (en) * | 2006-11-30 | 2008-01-30 | 姜笃林 | Metallic composite tube or pipe |
CN201021739Y (en) * | 2007-03-14 | 2008-02-13 | 吴发东 | Fiber enhanced plastic steel compound pipe |
CN201021738Y (en) * | 2007-05-15 | 2008-02-13 | 上海华夏化工材料有限公司 | A carbon fiber rosin compound steel pipe |
JP2010236537A (en) * | 2009-03-10 | 2010-10-21 | Shinko Metal Products Kk | Laminated composite tube |
CN202209482U (en) * | 2011-09-07 | 2012-05-02 | 上海启鹏工程材料科技有限公司 | FRP material composite stainless steel pipe |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104100777A (en) * | 2013-04-08 | 2014-10-15 | 上海启鹏工程材料科技有限公司 | FRP (fiber reinforced plastic) reinforced fiber composite metal pipe as well as manufacturing equipment and manufacturing method of FRP reinforced fiber composite metal pipe |
CN104112689A (en) * | 2013-04-18 | 2014-10-22 | Ap系统股份有限公司 | Crossbeam and equipment used for processing substrate |
CN103413640A (en) * | 2013-05-31 | 2013-11-27 | 镇江天信电器有限公司 | Composite insulating tube for electrical appliances |
CN103612406A (en) * | 2013-10-23 | 2014-03-05 | 桐乡市恒力电力器材厂 | Processing device for insulating tube and preparation method of the insulating tube |
CN105619951A (en) * | 2015-12-25 | 2016-06-01 | 耀奇鑫科技(深圳)有限公司 | Mixed-reinforced-fiber and galvanized-steel composite material and preparing technology thereof |
CN105619950A (en) * | 2015-12-25 | 2016-06-01 | 耀奇鑫科技(深圳)有限公司 | Mixed-reinforced-fiber and alloy composite material and preparing technology thereof |
CN106592768A (en) * | 2017-01-22 | 2017-04-26 | 北京工业大学 | FRP composite structure of built-in complex cross section profile steel |
CN106639122A (en) * | 2017-01-22 | 2017-05-10 | 北京工业大学 | FRP (fiber reinforced plastics) composite structure with embedded closed section steel |
CN106801471A (en) * | 2017-01-22 | 2017-06-06 | 北京工业大学 | A kind of FRP composite constructions of open type complex section shaped steel |
CN107060820A (en) * | 2017-01-22 | 2017-08-18 | 北京工业大学 | A kind of FRP composite lining structures of embedded steel core |
CN109506053A (en) * | 2018-12-17 | 2019-03-22 | 巢湖鹏远金属焊管有限公司 | A kind of stainless steel composite pipe of wear resistant corrosion resistant |
CN109707918A (en) * | 2018-12-17 | 2019-05-03 | 巢湖鹏远金属焊管有限公司 | A kind of stainless steel pipe surface processing method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102979964A (en) | Fiber reinforced polymer (FRP) material and stainless steel tube composite and preparation technology thereof | |
CN102979097B (en) | Weaving sleeve pipe type fiber reinforce plastic (FRP) rib and preparation method thereof | |
CN101832430A (en) | Glass-steel reinforced plastic pipe and manufacturing method thereof | |
CN100581794C (en) | Preparation method for on-line pulling and extruding glass steel tube with multilayer annular weaving structure | |
CN103059532B (en) | Plastic pipe machined by using bulk molding compounds | |
CN102344573A (en) | Technology for producing stranded fiber reinforced composite core with pre-dipping method | |
CN101119042A (en) | Fiberglass insulating tube with multi-layer ring shaped braiding structure | |
CN1324257C (en) | Bamboo-plastic composite pipe shaping method | |
CN202283795U (en) | Fiber reinforced plastic (FRP) bar composite stainless steel tube | |
CN202209482U (en) | FRP material composite stainless steel pipe | |
CN102345236A (en) | Wet-method production technology for multicore stranded fiber-reinforced core material | |
CN104842569B (en) | Composite FRP bar, preparation process and preparation device | |
CN201021738Y (en) | A carbon fiber rosin compound steel pipe | |
CN202418937U (en) | FRP material composite tube | |
CN101382214B (en) | Steel mesh plastic composite pipe and preparation thereof | |
CN102979965A (en) | Fiber reinforced polymer (FRP) tendon and stainless steel tube composite and preparation technology thereof | |
CN104325653B (en) | The method for continuous production of a kind of GRP pipe and prepared GRP pipe | |
CN203651004U (en) | Preforming device for manufacturing reinforced plastic rod | |
CN103047486A (en) | Double-orientation fiber-reinforced polypropylene randon copolymer three-layer composite tube | |
CN103709604B (en) | A kind of reinforced plastics bar and production equipment thereof and method | |
CN101482024A (en) | Full-thread fiber-reinforced thermoplastic plastics anchor bar and its processing technique | |
CN204826415U (en) | A preparation facilities for preparing compound FRP muscle | |
CN201199616Y (en) | Power cable compound material tube | |
CN104100777A (en) | FRP (fiber reinforced plastic) reinforced fiber composite metal pipe as well as manufacturing equipment and manufacturing method of FRP reinforced fiber composite metal pipe | |
CN202852223U (en) | Steel bar reinforced glass fiber reinforced plastic composite tube |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |