Specifications

China Standard

Steel Grade

Standard

seamless steel tubes

and pipes

for structural purpose

GB/T********9

*0, *0, *5, *5, *0Mn2, *5Mn2, *7SiMn, *0Cr, *0Cr, *0CrMo, *5CrMo, *8CrMoA1, *0CrV, *0CrMnSi

ASTM A*****8
ASTM A*****8
ASTN A*****8
JIS G********4
JIS G********4

Seamless steel tubes and pipes for

liquid service

GB/T********9

*0, *0, Q**5, Q**5

ASTM A****8
ASTM A**2
ASME S**2
JIS G********8
FIS G********8
DIN ********4

seamless steel tubes

and pipesfor casing

API SPEC 5CT

J*5, N*0

API

Seamless steel tubes for

oil casing and

tubing in oil wells

APE SPEC 5L

A, B, X*2

API

Seamles Steel Tubes

and Pipes for

High Pressure Boiler

GB********5

*0G, *0MnG, *5MnG, *5MoG, *0MoG, *2Cr1MoVG, *5CrMoVG, *2Cr2MoG, *2Cr2MoWVTiB, *2Cr3MoVSiTiB,

ASTM A*****6a
ATSM A*****5a
JIS G********8
JIS G********8
DIN *********9
BS***9Part ****0

Seamless Steel Tubes

for low and Medium Pressure Boilers

GB********9

*0, *0

ASTM A**9, ASTM A**2
ASTM SA**9,SA**2,
BS***9

Seamless Steel Tubes

 for high pressure *-Chemical fertilizer equipment

GB******6

*0, *0G, Q**5, Q**0, *0MoVNb, *2CrMo, *5CrMo, *2Cr2Mo

ISO **********7
ASTM A*****4

Seamless steel tubes

for petroleum cracking

GB******6

*0, *0, *2CrMo, *5CrMo, 1Cr2Mo, 1Cr5Mo,  

JIS G********8