Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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| Alloy steel seamless pipe/tube | |
| PIPES & TUBES | : ASTM A335, ASTM A213, ASTM A691 |
| PIPES FITTINGS | : ASTM A234 |
| FITTINGS & FLANGES | : ASTM A182 |
| GRADES | : P1/P5/P9/P11/P12/P22/P91 & T5/T9/T11/T22/T91 |
| FORM (PIPES) | : SEAMLESS / E.R.W / EFSW |
| YUHONG SPECIAL STEEL is Exporters & Supplier of alloy steel seamless pipe, alloy steel pipe gr p5, alloy steel pipe gr p11, alloy steel pipe gr p9, alloy steel pipe gr p22, alloy steel pipe gr p91, ASTM A335, ASTM A213, ASTM A691. | |
| Available Shapes : | |
| Tubes & Pipes (SEAMLESS ) up to 30". Tubes & Pipes (ERW ) up to 60". Sheets / plates up to 150 MM. Rod / Bar up to 350 MM. Circle up to 1000 & Above as per your requirements. thickness up to 200 MM & Above as per requirements. | |
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 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 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 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 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 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 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(%):
| ASTM A335 Low-Alloy Steel (Grades) | UNS equivalent | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo |
| P1 | K11522 | 0.10~0.20 | 0.30~0.80 | 0.025 | 0.025 | 0.10~0.50 | – | 0.44~0.65 |
| P2 | K11547 | 0.10~0.20 | 0.30~0.61 | 0.025 | 0.025 | 0.10~0.30 | 0.50~0.81 | 0.44~0.65 |
| P5 | K41545 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.5 | 4.00~6.00 | 0.44~0.65 |
| P5b | K51545 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 1.00~2.00 | 4.00~6.00 | 0.44~0.65 |
| P5c | K41245 | 0.12 | 0.30~0.60 | 0.025 | 0.025 | 0.5 | 4.00~6.00 | 0.44~0.65 |
| P9 | S50400 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50~1.00 | 8.00~10.00 | 0.44~0.65 |
| P11 | K11597 | 0.05~0.15 | 0.30~0.61 | 0.025 | 0.025 | 0.50~1.00 | 1.00~1.50 | 0.44~0.65 |
| P12 | K11562 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.5 | 0.80~1.25 | 0.44~0.65 |
| P15 | K11578 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 1.15~1.65 | – | 0.44~0.65 |
| P21 | K31545 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.5 | 2.65~3.35 | 0.80~1.60 |
| P22 | K21590 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.5 | 1.90~2.60 | 0.87~1.13 |
| P91 | K91560 | 0.08~0.12 | 0.30~0.60 | 0.02 | 0.01 | 0.20~0.50 | 8.00~9.50 | 0.85~1.05 |
| P92 | K92460 | 0.07~0.13 | 0.30~0.60 | 0.02 | 0.01 | 0.5 | 8.50~9.50 | 0.30~0.60 |
Mechanical properties:
TESTING REQUIREMENTS
Transverse/longitudinal: tension and flattening, hardness, bend tests- for material which has been heat-treated in batch furnaces, these tests shall be made on the 5% of the pipes from each heat lot number. For smaller lots, one pipe at a minimum has to be tested
ASTM A335 Gr. P91 shall have a hardness of 250 HB / 265 HV (25 HRC)
Hydro testing: shall be applied to every length of pipe
The non-destructive electric test is optional
| Hardness | ||||||
| A335 Low-Alloy Pipe | UNS Number | Yield Strength ksi | Tensile Strength ksi | Elongation % | Rockwell | Brinell |
| P1 | K11522 | 30 | 55 | 30 | – | – |
| P2 | K11547 | 30 | 55 | 30 | – | – |
| P5 | K41545 | 40 | 70 | 30 | – | 207 max |
| P9 | S50400 | 30 | 60 | 30 | – | – |
| P11 | K11597 | 30 | 60 | 20 | – | – |
| P12 | K11562 | 32 | 60 | 30 | – | 174 max |
| P22 | K21590 | 30 | 60 | 30 | – | – |
| P91 | K91560 | 60 | 85 | 20 | – | – |
