Standard:
GB5310 Seamless Steel Pipe For High Pressure Boiler
GB6479High Pressure Seamless Pipe For Chemical Fertilizer Equipment
GB9948Seamless steel tube for petroleum cracking Tube
ASTM A213 Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ASTM A335 Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
JIS G3458 Alloy Steel Pipes (STPA 12/ 20/ 22/ 23/ 24/ 25/ 26)
JIS G3462 Alloy Steel for Boiler and Heat Exchanger Tubes (STBA12/ 13/ 20/ 22)
JIS G3467 Steel Tubes for Fired Heater (STF 410/STFA 12/ 22/ 23/ 24/ 25/ 26)
DIN17175-79Electrical Resistance Or Induction Welded Steel Tubes for Elevated Temperature

Grade:
Cr5Mo (STFA25 STPA25 STBA25 T5 P5)
15CrMo (STFA22 STPA22 STBA22 T12 P12)
1.25Cr0.5Mo (STFA23 STPA23 STBA23 T11 P11)
Cr9Mo (STFA26 STPA26 STBA26 T9 P9)
12Cr1MOV
12Cr2Mo (10CrMo910 T22 P22)
10Cr9Mo1VNb T91 (P91)
12Cr2MoWVTiB (R102)

Detailed Product Description
1) Outside diameter: 20 - 1, 067mm
2) Thickness: 1 - 80mm
3) Manufacturing standards: GB, DIN, JIS, ASTM
4) Bevel or varnish to be /confirm/ied