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ASTM A335 P9 Seamless Pipe for Petrochemical & Refinery Application
ASTM A335 P9 Alloy steel pipe apply to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant.
The range of ASTM A335 P9 alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.
Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.
1. Standards:
ASTM A335 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
2. Application:
For the low and medium pressure boiler and steam header pipes;
For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.
3. Ordering Information
Quantity (feet, meters, or number of lengths),
Name of material (seamless alloy steel pipe),
Grade (P9),
Manufacture (hot-finished or cold-drawn),
Size using one of the following:
NPS and schedule number;
Outside diameter and nominal wall thickness;
Outsider diameter and minimum wall thickness;
Inside diameter and nominal wall thickness;
Inside Diameter and minimum wall thickness.
Length (specific or random)
End finish (plain end or bevel end)
4. Chemical Requirements
| Chemical Requirements | |||||||||
| Grade | UNS Designation | Composition, % | |||||||
| C | Mn | P max | S max | Si | Cr | Mo | Others | ||
| P9 | S50400 | 0.15max | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | ... |
5. Available Size Range
| OD | Thickness | ||
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed above, please contact us for further information. | |||
6. Tensile Requirements
Tensile Strength min.: 60ksi / 415MPa
Yield Strength min.: 30ks / 205MPa
7. Inspection & Test
Chemical composition, mechanical properties ( tensile strength, yield strength, elongation, flaring, flattening, bending, hardness, impact test), surface and dimension, NDE, hydrostatic test.
8. Manufacture
Hot Rolled or Cold Drawn
9. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing & Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE → Visual & Dimension Inspection → Marking → Storing & Shipping
10. Supplementary Requirements
S1. Product Analysis
S2. Transverse Tension Tests
S3. Flattening Test
S4. Metal Structure and Etching Tests
S5. Photomicrographs
S6. Photomicrographs for Individual Pieces
