product carbon and alloy seamless steel pipe
Item Chinese Standard America Standard German Standard:
ASTM A53 ST37,DIN1626
ASTM A106 ST37-2 DIN17175
ASTM A179-C ST45-8 DIN1629/4
ASTM A226
ASTM A106-B ST45-8,DIN17175
ASTM A53B ST42-2 DIN1626
ASTM A178-C ST45-4 DIN1629/4
345# ASTM 1045 CK45
ST52.4 DIN1629/4
ST52 DIN16229/3
ST52 DIN1629/3
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