We are supplying prime quality seamless boiler tube by ASME SA210 standard
Our factory has advanced 127 continuous hot rolling production line, the pipe from 42mm
to 139.7mm by different standard can be produced by hot rolled technics. the pipe can be with much lower
price than cold rolled pipe, yet, pipe with very high quality.
Standard: ASME SA210, ASME SA335
Steel grade: Gr.A1, Gr.C, T11, T22, T91
Outer diameter:31.8mm~219mm (hot rolled&cold rolled)
Wall thickness: 3mm~60mm
Tolerances of diameter: ±0.4mm~±1mm
Tolerance of wall thickness: ±12.5%
Length: 6 meters, 9meters, 12 meters, Random length.
End processing: Bevel ends, Plain ends. Can be protected by end caps.
Surface: Bare pipe, Black painting, 3LPE coating, etc.
Size tolerance
Outer diameter mm | Tolerance of OD mm | Wall thickness mm | Tolerance of W.T mm |
31.8-50 | +/- 0.3% | 3-20 | +/- 7.5% |
51-114 | +/- 1% | 3-20 | +/- 8.0% |
127-219 | +/- 1% | 5-60 | +/- 8.0% |

Mechanical Properties ASME seamless steel tube:

Chemical Composition ASTM seamless steel tube:


