API 5L

API 5L Generally speaking, API 5L refers to API 5L line pipe,which is out of the ground the oil, gas, water, transported by pipeline to pipe oil and gas industry companies. according to the manufacture process and the tube bloom used different shapes, api 5l can be divided into api 5l seamless steel pipe and api welded steel pipe, among the usage quantity of welded steel pipe is more than seamless steel pipe. Line pipe grade and chemical components API 5L can be divided into API 5L PSL 1 and API 5L PSL 2, including API 5L PSL 1 level and the categories are: A, B, x42, x46, x52, x56, x60, x65, x70, API 5L PSL 2 level and the category is B, x42, x46, x52, x56, x60, x65, xx70, x80. the higher the level the stronger mechanical properties. Application: used for oil and gas industry, gas, water, oil transportation. API 5L PSL 1 Chemical composition and mechanical properties Steel grade C(max) Mn(max) P(max) S(max) Tensile strength Yield strength B 0.28 1.20 0.030 0.030 414 241 X42 0.28 1.30 0.030 0.030 414 290 X46 0.28 1.40 0.030 0.030 434 317 X52 0.28 1.40 0.030 0.030 455 359 X56 0.28 1.40 0.030 0.030 490 386 X60 0.28 1.40 0.030 0.030 517 414 X65 0.28 1.40 0.030 0.030 531 448 X70 0.28 1.40 0.030 0.030 565 483 API 5L PSL 2 Chemical composition and mechanical properties Steel grade C(max) Mn(max) P(max) S(max) Tensile strength Yield strength B 0.24 1.20 0.025 0.015 414-758 241-758 X42 0.24 1.30 0.025 0.015 414-758 290-758 X46 0.24 1.40 0.025 0.015 434-758 317-758 X52 0.24 1.40 0.025 0.015 455-758 359-758 X56 0.24 1.40 0.025 0.015 490-758 386-758 X60 0.24 1.40 0.025 0.015 517-758 414-758 X65 0.24 1.40 0.025 0.015 531-758 448-758 X70 0.24 1.40 0.025 0.015 565-758 483-758 API SPEC 5L Line Pipe API SPEC 5L line pipe production process is divided into seamless steel pipe, ERW steel pipe, submerged arc welded pipe. But the main use of seamless steel pipe (the Seamless), straight seam high frequency resistance welding steel pipe (Electric-Resistance Arc Welding, abbreviated as ERW), LSAW (Longigudinally Submerged Arc Welding short LSAW), spiral submerged arc welded pipe (Spirally Submerged Arc Welding, short of SSAW) four. LSAW pipe divided into UO (forming method of UOE), RB (RBE), the JCO (JCOE) and other kinds. Steel plate in the molding would be pressed into a U-shaped, and then pressed into the O-, and then the inside and outside submerged arc welding, after welding, usually at the end of the full length of the expander (Expanding) called UOE welded pipe, not expanding known as the UO pipe. Pressure steel plate roll bending (Roll Bending), and then the inside and outside submerged arc welding, after welding, expanding the RBE pipe, or not expanding the RB pipe. Molding plate according to the type J-O-C-order expanding JCOE pipe or not expanding JCO pipe after welding. LSAW pipes above, the use of common of UOE. The high frequency resistance welding tube ERW tube embryo through the skin effect and proximity effect in high-frequency current to the edge of the melt, and then squeeze rollers under pressure welding, which is characterized by no external filler metal, heat affected zone, high production efficiency. Spiral seam pipe the SSAW for long-distance line pipe has a long history, the pipeline in China is mainly used. Post time: Sep-09-2019