TYPE EXECUTIVE STANDARD GRADE OF STEEL SPECIFICATION
Seamless steel pipe for structural purposes GB/T8162-1999 10#20#35#45#16Mn(Q345) 6-720*1-70mm
Steel pipe for fluid body GB/T8163-1999 10#20#16Mn(Q345) 6-720*1-70mm
Boiler pipe with low and medium pressure GB3087-1999 10#20# 6-720*1-70mm
High-pressure boiler pipe GB5310-1995 20G 6-720*1-70mm
Ordinary seamless steel pipe ASTM A53 GR. B SA53 B High temperature seamless steel pipe ASTM A106 GR. B SA53 B
Pipeline steel pipe API SPEC 5L BX42X46X52
ASTM A106/A53/API 5L GR. B B, 13.7-711.2mm