Yuhong Group Co.,Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 1500 tons per month |
| Delivery Time | 15-30days |
| Packaging Details | Plywooden Case /Iron Case |
| Standard | ASME SA335 |
| Grade | P9 |
| Type | Seamless |
| Application | High Temperature Service |
| Heat Treatment | Normalized, Tempered |
| Manufacture | Hot finished, Cold-drawn |
| Brand Name | YUHONG |
| Model Number | ASME SA335 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 | 1500 tons per month |
| Delivery Time | 15-30days | Packaging Details | Plywooden Case /Iron Case |
| Standard | ASME SA335 | Grade | P9 |
| Type | Seamless | Application | High Temperature Service |
| Heat Treatment | Normalized, Tempered | Manufacture | Hot finished, Cold-drawn |
| Brand Name | YUHONG | Model Number | ASME SA335 P9 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| High Light | ASME SA335 P9 alloy steel pipe ，seamless ferritic steel pipe ，high temperature service steel pipe | ||
ASME SA335 P9 Seamless Ferritic Alloy Steel Pipe for High Temperature Service
YUHONG GROUP is a specialized manufacturer of high-grade alloy steel pipes with over 30 years of experience in serving global energy and petrochemical industries. Our ASME SA335 P9 Seamless Ferritic Alloy Steel Pipes are engineered for critical high-temperature applications, manufactured under strict quality control with full compliance to ASME and ASTM standards.
Heat Treatment Specifications for ASME SA335 P9 Alloy Steel Pipe
| Parameter | Requirement | Notes |
| Grade | P9 (9Cr-1Mo) | Ferritic alloy steel |
| Heat Treat Type | Normalize and Temper | Mandatory process |
| Normalizing Temperature | 1900-1975°F (1040-1080°C) | Austenitizing range |
| Cooling Media | Air cooling | No forced cooling required |
| Tempering Temperature | 1100°F min (595°C) | Subcritical annealing |
| Microstructure | Tempered martensite | Post-treatment verification |
Chemical Composition Requirements for ASME SA335 P9 Alloy Steel Pipe
| Element | UNS K90941 | Requirement (%) | Notes |
| Carbon (C) | 0.15 | Max | - |
| Manganese (Mn) | 0.30-0.60 | Range | - |
| Phosphorus (P) | 0.025 | Max | - |
| Sulfur (S) | 0.025 | Max | - |
| Silicon (Si) | 0.25-1.00 | Range | - |
| Chromium (Cr) | 8.00-10.00 | Range | Key alloy element |
| Molybdenum (Mo) | 0.90-1.10 | Range | Key alloy element |
Mechanical Properties of ASME SA335 P9 Alloy Steel Pipe
| Property | Requirement | Unit | Notes |
| Tensile Strength (min) | 60 | ksi | Equivalent to 415 MPa |
| Yield Strength (min) | 30 | ksi | Equivalent to 205 MPa |
| Material Grade | P9 (Other Category) | - | 9Cr-1Mo Alloy Steel |
Applications of ASME SA335 P9 Alloy Steel Pipe
1.High-Temperature Pressure Systems
Steam piping networks in power plants
Process piping for refineries and petrochemical facilities
2.General Industrial Services
Medium-temperature heat exchangers
Utility piping system
Advantages of ASME SA335 P9 Alloy Steel Pipe
| Benefit | Technical Superiority |
| Standard Compliance | Meets minimum tensile and yield requirements per ASME SA335 |
| Reliable Performance | Proven mechanical properties for non-critical elevated temperature services |
| Material Flexibility | Suitable for applications not requiring advanced alloy grades |
| Cost-Effective | Economical alternative where ultra-high strength is unnecessary |
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 HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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