ASTM A335 P91 Alloy Seamless Steel Tube (Pipe)
We are supplying seamless alloy pipe with big diameter and wall thickness. This kind of alloy pipe are widely used at power plant, boiler industry, mechanical making, chemical plant, nuclear power industry, etc.
The manufacturer is Yangzhou Steel Pipe Co.,Ltd and TPCO.
Standard: ASME SA106, ASME SA335, ASME SA333, DIN17175, EN10216-2, GB5310, GB3087.
Steel grade: SA335 P11/P12/P22/P91/P92, WB36, 10CrMo910, 20G, 15CrMo, 12Cr1MoVG,
SA333 I, SA333VI, ST45.8/III,etc
Outer diameter: 219mm~1066mm
Wall thickness: 15mm~120mm
Professional Loading works
Tolerance of size of our seamless alloy pipe:
| Type of pipe |
Outer diameter |
Wall thickness |
| OD (mm) |
Tolerance (mm) |
WT (mm) |
Tolerance (mm) |
| Hot rolled pipe |
219~457 |
±1.0% |
≤20 |
-10%~+12.5% |
| >20~40 |
-10%~+10% |
| 457~1066 |
±0.9% |
>40~70 |
-7%~+9% |
| >70~120 |
-6%~+8% |
Further more, the plant has large-scale cold rolling machine(by 1200t, 1600t, 2000t), the maximum cold rolling diameter can be 920mm. Cold rolling technics can improve the precision of diameter and wall thickness. So we can supply high steel grade steel pipe with big diameter and thin thickness.
Our service
Make production according to customer's specific requirements strictly.
Accept inspection during the production or before shipment.
Provide the original copy of MTC(Mill testing certificate)
Provide the standard seaworthy packing.
Arrange the most professional shipment.
Audited Supplier 
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