ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Zhangjiagang Hua Dong Energy Technology Co., Ltd.
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ASTM A335 / ASME SA335 P22 Alloy Steel Seamless Tubes for Power Station Boiler
Alloy Steel Seamless Pipe:
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40.
Type : Seamless / Fabricated
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Seamless Pipe – AS Seamless Pipe
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P91
Alloy Steel Pipe A 335 /ASME SA335 P5 :
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40.
Type : Seamless / Fabricated
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Pipe A335 P5 – AS Pipe A335 P5
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P91
Alloy Steel Pipe A 335 / ASME SA335 P9 :
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40.
Type : Fabricated / Seamless
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Pipe A335 P9 – AS Pipe A335 P9
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P91
Alloy Steel Pipe A 335 / ASME SA335 P11 :
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40.
Type : Fabricated / Seamless
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Pipe A335 P11 – AS Pipe A335 P11
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P91
Alloy Steel Pipe A 335/ ASME SA335 P12:
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40
Type : Fabricated / Seamless
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Pipe A335 P12 – AS Pipe A335 P12
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P97
Alloy Steel Pipe A 335/ ASME SA335 P22 :
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40
Type : Fabricated / Seamless
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Pipe A335 P22 – AS Pipe A335 P22
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P91
Alloy Steel Pipe A 335/ ASME SA335 P91:
Size : 1/2" TO 24 "IN OD & NB
Schedule: SCH20, SCH30, SCH40.
Type : Welded / Fabricated / Seamless
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End.
MATERIALS :
Alloy Steel Pipe A335 P91 – AS Pipe A335 P91
ASTM A335, Gr. P5, P9, P11, P12, P21, P22 & P91
Chemical composition(%):
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
| P11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
| P22 | 0.05-0.16 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 |
| P5 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 |
| P9 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
| P91 | 0.08-0.12 | 0.30-0.60 | 0.020/0.010 | 0.020/0.010 | 0.02-0.50 | 8.00-9.50 | 0.85-1.05 |
| P92 | 0.07-0.13 | 0.30-0.60 | 0.020/0.010 | 0.020/0.010 | ≤0.50 | 8.50-9.50 | 0.30-0.60 |
Mechanical properties:
| Grade | Tensile strength | Yield strength | Elongation |
| P11, P22, P5, P9 | ≥415 | ≥205 | ≥30/20 |
| P91 | ≥585 | ≥415 | ≥20 |
| P92 | ≥620 | ≥440 | ≥20 |
Certification