Longitudinally seam welded steel pipe LSAW / ERW
steel tube principal physicochemical performances(GB/T9711.1-1997,API Spec 5L ) | ||||||||||||
standard | steel | %Chemical composition | Tensile properties | |||||||||
grade | C | Mn | P | S | Si | (Mpa)Yield | (Mpa)Tensile | (L0=5.65S))min | ||||
max | max | max | max | max | strength | strength | Elongation % | |||||
min | max | min | max | D≤168.3mm | D168.3mm | |||||||
GB/T9711.1 | L175 | 0.21 | 0.60 | 0.03 | 0.03 | - | 175 | - | 335 | 27 | ||
-1997 | L210 | 0.21 | 0.90 | 0.03 | 0.03 | 210 | 415 | 21 | ||||
L245 | 0.26 | 1.15 | 0.03 | 0.03 | 245 | 415 | 825 | 21 | ||||
L290 | 0.28 | 1.25 | 0.03 | 0.03 | 290 | 415 | 21 | |||||
L320 | 0.30 | 1.25 | 0.03 | 0.03 | 320 | 435 | 20 | |||||
L360 | 0.30 | 1.25 | 0.03 | 0.03 | 360 | 460 | 19 | |||||
L390 | 0.26 | 1.35 | 0.03 | 0.03 | 390 | 490 | 18 | |||||
L415 | 0.26 | 1.35 | 0.03 | 0.03 | 415 | 520 | 17 | |||||
Ti Max | - | - | ||||||||||
A25 | 0.21 | 0.60 | 0.03 | 0.03 | - | |||||||
A | 0.22 | 0.90 | 0.03 | 0.03 | - | |||||||
B | 0.26 | 1.20 | 0.03 | 0.03 | 0.04 | 241 | 414 | (0=50.8mm)as follow | ||||
AIP 5L | X42 | 0.26 | 1.30 | 0.03 | 0.03 | 0.04 | 290 | 414 | e=1944A°·²/Uº·9 | |||
PSL 1) | X46 | 0.26 | 1.40 | 0.03 | 0.03 | 0.04 | 317 | 434 | ||||
X52 | 0.26 | 1.40 | 0.03 | 0.03 | 0.04 | 359 | 455 | |||||
X56 | 0.26 | 1.40 | 0.03 | 0.03 | 0.04 | 386 | 490 | |||||
X60 | 0.26 | 1.40 | 0.03 | 0.03 | 0.04 | 414 | 517 | |||||
X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.06 | 448 | 531 | |||||
X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.06 | 483 | 565 |