Seamless steel pipe (SMLS) is formed by drawing a solid billet over a piercing rod to create the hollow shell, without welding or seam. It is suitable for bending and flanging. The most advantage is increasing the ability of withstanding higher pressure. So it is widely used for boiler and pressure vessel, automotive area, oil well, and equipment components. Seamless steel pipe can be cut, threaded or grooved. And the coating method includes black / red lacquer, varnish painting, hot dip galvanization, etc.

1. WANSTEEL GROUP https://sdwansteelpipe.com/products/seamless-steel-pipe/
https://sdwansteelpipe.com/products/seamless-steel-pipe/ WANSTEEL GROUP
Seamless steel pipe (SMLS) is formed by drawing a solid billet over a piercing rod to create the
hollow shell, without welding or seam. It is suitable for bending and flanging. The most advantage
is increasing the ability of withstanding higher pressure. So it is widely used for boiler and
pressure vessel, automotive area, oil well, and equipment components.
Seamless steel pipe can be cut, threaded or grooved. And the coating method includes black / red
lacquer, varnish painting, hot dip galvanization, etc.
Seamless Steel Pipe Chemical Composition:
Grade Ni Cr Mo Fe Cu Mn C Si Al S P Others
UNS
N04400
63 min. 2.5 max. 28.0-34.0
2.0
max.
0.3 max. 0.5 max.
0.024
max.
UNS
N06600
72.0 min. 14.0-17.0 6.0-10.0 0.5 max.
1.0
max.
0.15
max.
0.5 max.
0.015
max.
UNS
N06690
58.0 min. 27.0-31.0 7.0-11.0 0.5 max.
0.5
max.
0.05
max.
0.5 max.
0.015
max.
UNS
N06693
remainder27.0-31.0 2.5-6.0 0.5 max.
1.0
max.
0.15
max.
0.5 max. 2.5-4.0 0.01 max. Ti: 1.0 max.
UNS
N06625
58.0 min. 20.0-23.0 8.0-10.0 5.0 max.
0.5
max.
0.1 max. 0.5 max.
0.4
max.
0.015
max.
0.01max.
Nb+Ta: 3.15-4.15Co: 1.0
max.Ti: 0.40 max.
UNS
N08800
30.0-35.0 19.0-23.0 39.5 min.
0.75
max.
1.5
max.
0.1 max. 1.0 max. 0.15-0.6 0.015ma.
UNS
N08825
38.0-46.0 19.5-23.5 2.5-3.5 22.0 min. 1.5-3.0
1.0
max.
0.05
max.
0.5 max.
0.2
max.
0.03 max.
UNS
N08028
30.0-34.0 26.0-28.0 3.0-4.0 remainder 0.6-1.4
2.5
max.
0.03
max.
1.0 max. 0.03 max. 0.03 max.
UNS
N08926
24.0-26.0 19.0-21.0 6.0-7.0 remainder 0.5-1.5
2.0
max.
0.02max. 0.5 max. 0.01 max. 0.03 max. N2: 0.15-0.25
UNS
N08904
23.0-28.0 19.0-23.0 4.0-5.0 remainder 1.0-2.0
2.0
max.
0.02
max.
1.0 max. 0.035ma.
0.045
max.
UNS
N10276
remainder15.0-16.515.0-17.0 4.0-7.0
1.0
max.
0.01
max.
0.08max. 0.01 max.
0.015
max
Co: 2.5 max.W: 3.0-4.0V:
0.1-0.3