Tangshan Xingbang Pipeline Engineering Equipment Co., Ltd.  

Product Name: 3PE Anti-Corrosive Petroleum Pipe for Oil Supply Model NO.: DN20-DN2000 Connection Type: Seamless ,Welded ,Flange, Socket Cross-Section Shape: Round Medium: Cold Water,Hot Water,Oil and Gas,Chemical Diameter: Dn200 Standard: ASTM, GB, API, DIN, JIS, En253 Material: PP PVC PPR Carton Steel , Pb,PE MPa Classfication: Low and Media Pressure Piping Temperature Classification: Low and Media Temperature Trademark: xingbang Transport Package: Bare Package Specification: 11.8m 5.8m Origin: China HS Code: 7304399000 Product Description Directly Buried Three Layer PE Anti-corrosive Steel PipeThe current domestic anti-corrosive steel pipe adopt epoxy coal tar anti-corrosion, welding epoxy powder (FBE, glassfiber anti-corrosive) and three-layer PE anticorrosive, but from the anti-corrosion structure and various performance, it indicates that three layer PE anti-corrosion should be the first choice, our company has three layer PE anti-corrosive production lines, and we also can undertake 3 PE anticorrosion processing for the steel pipe.Structure of three layer PE anti-corrosive pipeThree layer PE anti-corrosive steel pipe carry out the national standard GB/T23257-2009.Anti-corrosion steel pipe with inner layer of epoxy powder coating, middle layer of adhesive, outer layer of polyethyleneTechnologicalprocessof three layer PE anti-corrosive pipe1. Shot blasting degusting processing for the steel pipe:Before shot blasting degusting,with medium frequency induction heater ,the steel pipe should be preheated to 40 to 60 degree, and then through the shot blasting machine, to remove the water, oil and dirt contamination , derusting gradeis up to GB/T9823 - 1988 standard, Sa2.5 level (nearly white level) requirements, the depth on the surface of the steel anchor pattern from 40 to 100 microns.2. Epoxy powder coating:Before spraying, the steel pipe will be wrapped in kraft paper on both ends , then use medium frequency induction heater , heated the steel pipe to 190-230 degree, the electrostatic spraying method is adopted to epoxy powder as required amount of powder coating to the steel pipe surface, in the high temperature, combination with base material fastness, its anticorrosion performance is superior, the good resistance to chemical corrosion, coating surface density is smooth, wearable, and anti-High temperature.3.Extruded adhesive:According to the requirement of the thickness of adhesive layer and polyethylene, by adjusting the extrusion machine lord motor and screw revolution, to meet the requirements of extrusion amount. When the epoxy powder in a gel form, we adopt lateral winding technology, make the adhesive and PE coated on steel pipe, adhesive epoxy powder ,polyethylene polymerization to form a three layer structure, after molding, with three rows of roller, make three layer structure fusion compaction, make it a whole system with smooth surface, without bubble and defect.Adhesive performance is stable, strong adhesive force, uniform film-forming.Temperature of PE extrusion is 230-260 degree; PE aging corrosion resistance is strong, good environmental stress cracking resistance and elongation properties.4. Cooling of coated pipeAccording to the requirements of the three layer structure of the material properties, it requiresslow cooling, temperature of cooling pipe should not exceed 60 degree.5.Jeeping:in the production process, using online electric spark leak detector for coating 100% of leak detection and leak detection voltage is 25 KV .it requires no funneled under 25 Voltage leak detection.6. Coating products processing:Use groove grinding machine for pipe end for processing and tagsMain materials:Epoxy powder adhesives and polyethylene epoxy powder material, for example, FBE from American 3M company, Dupont resin adhesive and domestic high quality polyethylene materials.Specification of Thickness of Anti-corrosive CoatingDN(mm)Epoxypowder(μm)Adhesive layer(μm)Minimum thickness on the coating(mm)Common level(G)Strengthen level(S)DN≤100>=120>=1701.82.51002.02.72502.22.9500≤DN<8002.53.2DN≥8003.03.7Indexes of epoxypowderNO.Item Indexes1size distribution(%)150μm oversize powder <=3.0250μm oversize powder <=0.22· volatiles(%)<=0.63Density(g/m3)1.3~1.54Gel time(200ºC)/(S)>=12confirm to the requirement±20%5Fixed time(200ºC)/(min)<=3Indexes of fusion bonded epoxy coatingNO.ItemIndexes 1adhesion(grade)<=22cathodicdisbonding(65ºC,48h)/(mm)<=83cathodicdisbonding(65ºC,30h)/(mm)<=154counterbending(-20ºC,2.5°)no cracksIndexes of adhesive NO.ItemIndexes1Density (g/m3)0.920~0.9502MFR(190ºC,2.16kg)/(g/10min)>=0.73vicatsofteningpoint(ºC)>=904brittletemperature(ºC)<=-505· oxidationinductiontime(OIT)(200ºC)/(min)>=106· moisturecontent(%)<=0.17tensilestrength(MPa)>=178elongationatbreak(%)>=600Indexes of polyethyleneNO.ItemIndexes1tensilestrength· axial(MPa)>=20axial(MPa)>=20· deviation(%)<=152· elongationatbreak(%)>=6003indentationhardness(mm)(23ºC)(50ºCor70ºC)<=0.2<=0.34loop tensile stress cracking resistance(F50)/(h)>=1000Indexes of anti-corrosive layer NO. Item IndexesTwo layer Three layer1peelstrength(N/cm)(20ºC±10ºC)(50ºC±5ºC)>=70>=35>=100(cohesive failure)>=70 (cohesive failure)2· cathodicdisbonding(65ºC,48h)/(mm)<=15<=63· cathodicdisbonding(the highest temperature,30d)/(mm)<=25<=154impactstrength(J/mm)>=85· counterbending(-20ºC,2.5°)No crackPicture of hot water pipeXingbangplumbingistheparticipatedunitoftheNewNationalStandardinChina'sinsulationpipeindustry.Wehaveparticipatedinformulatingthreesetsnationalstandards:(GB/T28638-2012,GB/T29046-2012,GB/T29047-2012).WehavegainedISO9001InternationalQualityManagementSystem,ISO14001EnvironmentManagementSystem,GB/T28001OccupationHealthSafetyManagementSystem.Learn more about the production process>>>FAQ: 1: Are you a manufacturer or a trading company?We are a manufacturer which has more than 20 years' history.2: Where is your manufacturer? How to visit it?Our factory located in Yutian Economic Development Zone ,TangShan ,China.about 1.5 hours drive time to Beijing and TianJin airport .Mainly producing pre-insulated pipes,HDPE outer protection pipe and 3PE anti-corrosive pipe.You can take a plane to Beijing or Tianjin.then we could pick up you at the airport .3: How do we control our products' quality?We have professional quality control workers and quality inspectioncenter(CNAS lab) to control the entireproduction quality. 4: How do you transport these products?We use straps to hoist pre-insulated pipes, it can avoid no damage to our products, no hooks for lifting pipedirectly. During the handling process, collision, tossing and more ground drag scrolling are strictly forbidden.In the process of long distance transport, the pipes should be fixed, and not damage outer protecting pipesand insulating layers.5: Can I customize some other sizes of products?Yes! We can according to the customer's request.If you have any other questions, please don't hesitate, contact us.