Seamless steel tube grade

Types

Grades

Standard

Uses

Alloy tube

12Cr1MoV、P22(10CrMo910)
T91、P91、P9、T9、WB36、Cr5Mo(P5、STFA25、T5)、
15CrMo(P11、P12、STFA22)、
13CrMo44、Cr5Mo、15CrMo、25CrMo、30CrMo、40CrMo

DIN17175-79
JISG3467-88
JISG3458-88

GB5310-95
GB9948-88
ASTMA335/A335m
ASTMA213/A213m

Seamless steel pipe for high temperature, low temperature and corrosion resistance in petroleum, chemical, electric power and boiler industries

Casing pipe

J55　　N80

API SPEC  5CT

Oil well oil pipe, coupling material pipe

High pressure boiler tube

20G、A106c
ST45.8/3

GB5310-95
ASTMA106-99
DIN17175-79

Heat-resistant seamless steel pipe for high-pressure boiler

Low pressure boiler tube

10、20

GB3087-1999

Low and medium pressure boilers, tubes for overheating, boiling water pipes, locomotives

Petroleum cracking tube

20
12CrMo
15CrMo

GB9948-88

Seamless pipe for furnace tube, heat exchange tube and pipeline of petroleum refining plant

Fertilizer equipment high pressure seamless pipe

20、16Mn、Q345

GB6479-2000

Fertilizer equipment

Hydraulic pillar tube

27SiMn

GB/T17396-1998

Hydraulic support

Marine pipe

410

GB/T5312-1999

Manufacture of special pressure tube, boiler and superheater tube for ships

Line pipe

Gr.b

API

Oil and gas industry, conveying gas, water, oil

Fluid pipe

20、Q345

GB/T8163-1999

Fluid transport

Structure tube

10、20、35、45、 

16Mn Q345B

GB/T8162-1999

General structure

Precision pipe

St35、

St37.4(10#) St45(20#)St55(35#) Ck45(45#)
St52(16Mn)

CH8Ni9Ti 35Cr0

GB/T3639-2000

DIN2391

Precision steel pipes used in other fields such as automobiles, motorcycles, construction machinery, jacks, power tools and sports equipment