Oil line pipe We are professional in manufacturing JCOE PIPE The specification of JCOE PIPE Product LineJCOE LSAW steel pipelinecoating pipe Outer Diameter (OD)457mm-1422mm (18"-56")219mm-1620mm Wall Thickness (W/T)8mm-50mm/ Length (L)5800mm-12300mm5800mm-12300mm MaterialQ235,Q345,,X42,X46,X52,X56,X60,X65,X70,X80,etcCorrosion protection type and standard: 1. FBE/2FBE锛欳AN/CSA Z 245.20. DIN 30671 2.2LPE/3LPE:CAN/CSA Z 245.21. DIN 30670 3.2LPP/3LPP:DIN30678 NFA49711 StandardAPI Spec 5L(PSL1,PSL2), ASTM A252, ASTM A672, ISO3183, etc Annual Output150,000 tons/year1200M2/12hours For large diameter, high delivery pressure, long-distance conveying pipe, forming and welding technology is critical. Points from the production process, welded pipe is mainly divided into electric resistance welding tube (ElectricResistanceWelding, ERW), spiral submerged arc welding pipe (SAWH) and straight seam submerged arc welding pipe (for big diameter, delivery pressure, long-distance conveying pipe forming and welding technology is critical. Points from the production process, welded pipe is mainly divided into electric resistance welding tube (ElectricResistanceWelding, ERW), spiral submerged arc welding pipe (SAWH) and straight seam submerged arc welding pipe (SAWL). Although the resistance weld pipe development soon, but still belongs to the medium and small diameter welded pipe. At present, large diameter welded pipe still by SAWH and SAWL process. Spiral welded pipe in hot rolled steel coil tube billet, after screw forming, using submerged arc welding pipe again. This process can use a narrow billet production of large diameter welded pipe, you can also use the same width of different diameter welded pipe billet production. But the spiral submerged arc welding pipe there are some defects in the process, mainly on the weld, the weld length is longer than straight seam submerged arc welding pipe weld many, this means that the probability of weld defects is definitely too high. Moreover, the spiral welded pipe forming and welding, the weld quality is not easy to guarantee. In addition, the spiral welded pipe production line do not have all the tube expanding process, which is the residual stress of welded pipe. By contrast, straight seam submerged arc welding pipe can adapt to the development direction of long distance pipeline, has a certain advantage. The coating pipe is widely used in buried oil, natural gas, drinking water and other projects. It has the advantages of good corrosion resistance, low water absorption and high mechanical properties. FAQ Q: What鈥檚 your tem of the delivery? A: Our ordinary delivery term is FOB Tianjin. We also accept EXW, CFR, CIF, DDP, DDU etc. We鈥檒l offer you the shipping charges and you can choose the one which is the most convenient and effective for you. Q: Which shipping way can you provide? A: We can provide shipping by sea, by train. Q: What鈥檚 your after-sale service? A: Our quality warranty period is two year. Any quality problem will be solved to customer satisfactions.China Oil And Gas Pipes suppliers website:http://www.haiqianwei.net/lsaw-steel-pipe/oil-and-gas-pipes/