Description

TYPE EXECUTIVE STANDARD GRADE OF STEEL SPECIFICATION Seamless steel pipe for structural purposes GB/T********9 *0#、*0#、*5#、*5#、*6Mnï&frac*4;ˆQ**5ï&frac*4;‰ ****0****0mm Steel pipe for fluid body GB/T********9 *0#、*0#、*6Mnï&frac*4;ˆQ**5ï&frac*4;‰ ****0****0mm Boiler pipe with low and medium pressure GB********9 *0#、*0# ****0****0mm High-pressure boiler pipe GB********5 *0G ****0****0mm Ordinary seamless steel pipe ASTM A*3 GR.B SA*3 B 1/4″**8″, *3.****1.2mm High temperature seamless steel pipe ASTM A**6 GR.B SA*3 B SA**6B 1/4″**8″, *3.****1.2mm Pipeline steel pipe API SPEC 5L B、X*2、X*6、X*2 1/4″**8″, *3.****1.2mm ASTM A**6/A*3/API 5L GR.B B 1/4″**8″, *3.****1.2mm Heat resistant steel seamless steel tube heat intensity DIN*********9 St*5.*-St*5.8/I, St*5.*-St*5.8/III *5Mo3, *3CrMo*4, *0CrMo**0 1/4″**8″, *3.****1.2mm Seamless steel pipe DIN***8/***9 St*7, St*4, St*2 1/4″**8″, *3.****1.2mm