20 Inch LSAW Steel Pipe

Api 5l X42 20 Inch Diameter Steel Tube Project LSAW Steel Pipe

PSL is short for product specification level.Line pipe product specification level is divided into PSL1 and PSL2, also can say quality grades are divided into PSL1 and PSL2.PSL2 above PSL1, these two levels is not only different inspection requirements, and chemical composition, mechanical performance requirements are different, so the order in API 5 l, the terms of the contract in addition to indicate the specifications and grade of steel usually indicators, must also indicate the level of product specification, namely PSL1 or PSL2.PSL2 in chemical composition, tensile properties, impact energy, and nondestructive testing which strict in PSL1 indicators.2, do PSL1 does not require impact performance, PSL2 all except x80 grade steel, full size 0 ℃ average Akv: longitudinal p j, 41 lateral acuity 27 j.Average grade X80 steel, full size 0 ℃ Akv: longitudinal 101 j, or lateral acuity 68 j.3, line pipe should do water pressure test, and the standards are not allowed to nondestructive generation of hydraulic pressure, which is also the API standard and one big difference between our country standard.

LSAW steel pipe (Longitudinally Submerged Arc Welding (LSAW) is straight seam Submerged Arc Welding steel pipe professional express terms, is based on single thicker plate as raw material, the steel in the mold or molding machine medium-voltage (roll) into the pipe, using double-sided Submerged Arc Welding of pipes and hole enlargement production.