ASTM A 335 P9 Pipes,Seamless Chrome Moly Pipe,ASTM A335 P9 Seamless Pipe
We are a leading ASTM A335 P9 seamless pipe manufacturer and exporter in China, supplying high-quality chrome moly alloy steel pipes for high-temperature and high-pressure applications worldwide.
Our SA335 P9 pipes are widely used in industries such as oil & gas, power generation, and petrochemical plants due to their excellent strength, creep resistance, and oxidation resistance.
What is ASTM A335 P9 Pipe
ASTM A335 Grade P9 is a high alloy steel pipe containing approximately 9% Chromium and 1% Molybdenum, designed for high-temperature service (550–650°C).
It offers:
- Excellent heat resistance
- Strong creep strength
- Good oxidation resistance
- Low thermal expansion
ASTM A335 P9 Pipe Specifications
| Standard | ASTM A335 / ASME SA335 P9 |
|---|---|
| Size | 1/2” NB – 36” NB |
| Wall Thickness | 3mm – 12mm |
| Schedule | SCH 5 – SCH XXS |
| Length | 6m, 12m, Random Length |
| Ends | Plain End, Beveled End |
Chemical Composition of A335 P9 Pipe
| Grade | C | Mn | P | S | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
| P9 | ≤0.15 | 0.30–0.60 | ≤0.025 | ≤0.025 | 0.25–1.00 | 8.00–10.00 | 0.90–1.10 |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| P9 | ≥380 | ≥205 | ≥30 |
Applications of ASTM A335 P9 Seamless Pipe
A335 P9 pipes are widely used in:
- Oil and Gas Industry
- Power Plants
- Petrochemical Industry
- Refineries
- Gas Processing Plants
- Fertilizer Plants
- Heat Exchangers & Boilers
Equivalent Materials
- EN: 1.7386 / X11CrMo9-1 / X12CrMo9-1
- ASTM: A213 P9 / A335 P9
- BS: 3604/629
Manufacturing & Heat Treatment
P9 alloy steel pipes can be supplied as:
- Hot finished or cold drawn
- Heat treatment: Normalizing + Tempering (N+T) or Quenching + Tempering (Q+T)
Inspection & Testing
All ASTM A335 P9 pipes are tested according to international standards:
- Chemical composition analysis
- Mechanical testing (tensile, yield, elongation)
- Hardness and bending tests
- Non-destructive testing (NDT)
- Hydrostatic testing
- Third-party inspection (SGS / BV available)
Why Choose Us as Your P9 Pipe Supplier in China
- ✔ Professional ASTM A335 P9 pipe manufacturer
- ✔ Competitive factory price
- ✔ Fast delivery & large stock
- ✔ Mill Test Certificate (EN 10204 3.1 / 3.2)
- ✔ Export experience to Middle East, Europe, Southeast Asia
- ✔ Custom sizes and specifications available
Packaging & Delivery
- Standard export seaworthy packing
- Wooden cases / bundles / plastic caps
- Delivery time: 7–25 days depending on quantity
How to Order ASTM A335 P9 Pipe
Example order format:
ASTM A335 P9 Seamless Pipe
Size: 6" NB
Schedule: SCH 80
Length: 6 meters
Quantity: XX Tons
Related Products (Alloy Steel Pipes & Fittings)
We also supply a wide range of alloy steel pipes and fittings for high-temperature and high-pressure applications:
- ASTM A335 P5 Seamless Pipe
- ASTM A335 P11 Seamless Pipe
- ASTM A335 P22 Seamless Pipe
- ASTM A335 P91 Seamless Pipe
- ASTM A234 WP9 elbow
- ASTM A182 F9 Weld neck flanges
ASTM A335 P9 Alloy Seamless Steel Pipe
