High quality black seamless carbon steel pipe china factory

2) Thickness: 5.5mm-6.5mm

3) Tolerance:
Outer diameter: +/-5%
Thickness: +/-5%, 10%, 12.5%
Length: +/-10%

4) Length: 6 meters, 9 meters, 11.5 meters, 12 meters and around 12.5 meters.

2:Standard: API 5L,API 5CT,ASTM A53,ASTM A106B,ASTM A179,ASTM A210,ASTM A335,

                       ASTM A519,GB 5310-1995,GB 3087-1999, DIN 1629/2448,DIN17175.

3. Materials: 
                     

1) ASTM A53, A106, A210, A252, A333
2) X42, X46, X52, X60, X65, X70
3) JIS STPG42, G3454, G3456
4) German St37, St42, St45, St52, DIN1626, DIN17175
5) Chinese 20#, Q345, 16Mn

4:Surface Treatment: black painted or according to customers' requirements

5:Length: 5.8M,6M, 9M, 11.8m, 12M

6. End finish: 
1) Plain
2) Beveled ends or threaded with sockets
3) Coupling and with plastic caps