Yuhong Group Co.,Ltd
| Payment Terms | ,L/C,T/T |
| Supply Ability | According to customer's request |
| Delivery Time | Depends on quantity |
| Packaging Details | Bundle with plastic Cap/Woven Case |
| Product Name | Alloy Seamless Steel Pipe |
| Specification | ASTM A335 |
| Material | P9 |
| Type | Seamless |
| Ends | Plain End, Beveled End |
| Surface | Pickled And Annealed, Polished, Bright Annealed, Black Painting |
| NDT | MT, ET, HT, PT, PMI |
| Application | Superheater, Reheater, Boiler, Heat exchanger |
| Brand Name | YUHONG |
| Model Number | ASTM A335 P9 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | China |
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Product Specification
| Payment Terms | ,L/C,T/T | Supply Ability | According to customer's request |
| Delivery Time | Depends on quantity | Packaging Details | Bundle with plastic Cap/Woven Case |
| Product Name | Alloy Seamless Steel Pipe | Specification | ASTM A335 |
| Material | P9 | Type | Seamless |
| Ends | Plain End, Beveled End | Surface | Pickled And Annealed, Polished, Bright Annealed, Black Painting |
| NDT | MT, ET, HT, PT, PMI | Application | Superheater, Reheater, Boiler, Heat exchanger |
| Brand Name | YUHONG | Model Number | ASTM A335 P9 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | China |
| High Light | ASTM A335 P9 alloy seamless pipe ，black coating alloy steel tube ，superheater reheater seamless steel pipe | ||
Black Coating ASTM A335 P9 Alloy Seamless Steel Pipe for Superheater and Reheater
A Black-Coated ASTM A335 P9 Alloy Seamless Steel Pipe is a chromium-molybdenum alloy steel pipe designed for high-temperature and high-pressure service. The pipe body offering excellent high-temperature strength, oxidation resistance, and sulfidation corrosion resistance. The external surface of the pipe undergoes a specialized "phosphating and saponification" treatment, which creates a uniform, adherent black protective coating. This coating primarily serves as temporary anti-corrosion protection during transportation, storage, and installation, and can also act as a lubricant to reduce friction during certain machining or handling processes. It is critical to note that this black coating is not a permanent high-temperature corrosion-resistant layer. It is typically required to be removed prior to the pipe being placed into high-temperature service, in accordance with specific system design and commissioning procedures.
| ASTM/ASME | UNS | JIS G3458 | UNS | BS | DIN 17175 | ISO |
| A335 P9/ SA335 P9 | K90941 | STPA 26 | S50400 | 3604 P1 629-470 | X12CrMo91 | 2604 II TS38 |
1.Chemical & Mechanical Properties
| ASTM A335 P9 Chemical Composition (%) | ||||||
| C | Mn | P | S | Si | Cr | Mo |
|
≤0.15% |
0.3%~0.6% | ≤0.025% |
≤0.025% |
0.25%-1.00% |
8.0%~10.0% |
0.90%~1.10% |
Mechanical Properties
| Tensile Strength ksi/MPa | Yield Strength (0.2% offset) ksi/MPa |
Hardness HBW |
Heat Treatment Requirements
℉/℃
|
| ≥60/415 | ≥30/205 | ≤250 | 1250/675 |
|
Elongation(%)
|
|||
|
Wall Thickness
|
Longitudinal
|
Transverse
|
|
|
in.
|
mm | ||
|
5 ⁄16 (0.312)
|
8 |
30 | 20 |
|
9 ⁄32 (0.281)
|
7.2 | 28 | 19 |
|
1 ⁄4 (0.250)
|
6.4 | 27 | 18 |
|
7 ⁄32 (0.219)
|
5.6 | 26 | ... |
|
3 ⁄16 (0.188)
|
4.8 | 24 | ... |
|
5 ⁄32 (0.156)
|
4 | 22 | ... |
|
1 ⁄8 (0.125)
|
3.2 | 21 | ... |
|
3 ⁄32 (0.094)
|
2.4 | 20 | ... |
|
1 ⁄16 (0.062)
|
1.6 | 18 | ... |
2. Key Adventages
3. Key Applications
ASTM A335 Grade P9 Pipe Sizes
| O.D. x Thickness(mm) | O.D x Thickness(mm) | O.D x Thickness(mm) |
|---|---|---|
| 38.1 x 3.2 | 57.0 x 4.9 | 76.2 x 4.0 |
| 38.1 x 4.0 | 57.0 x 6.3 | 76.2 x 5.0 |
| 38.1 x 6.3 | 57.0 x 7.9 | 76.2 x 6.3 |
| 42.4 x 3.2 | 60.3 x 3.2 | 82.5 x 4.5 |
| 42.4 x 4.0 | 60.3 x 3.6 | 88.9 x 3.2 |
| 44.5 x 3.2 | 60.3 x 5.0 | 88.9 x 3.6 |
| 44.5 x 6.3 | 63.5 x 3.2 | 88.9 x 4.0 |
| 48.3 x 3.2 | 63.5 x 3.6 | 101.6 x 3.6 |
| 48.3 x 3.6 | 63.5 x 4.0 | 101.6 x 4.5 |
| 50.8 x 4.5 | 63.5 x 6.3 | 101.6 x 6.3 |
| 51.0 x 3.2 | 63.5 x 7.9 | 114.3 x 3.6 |
| 51.0 x 3.6 | 70.0 x 3.2 | 114.3 x 5.0 |
| 51.0 x 6.3 | 70.0 x 3.6 | 139.7 x 4.0 |
| 57.0 x 3.2 | 70.0 x 6.3 | 139.7 x 5.0 |
| 57.0 x 3.6 | 76.2 x 3.6 | 139.7 x 6.3 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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