Xi'an New Force Energy Engineering Co.,Ltd
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Seamless Steel ASTM / ASME A/SA 335 Gr. P22 Pipe for Power Plant Services
TIPTOP supplies a full range of seamless P22 pipes for power plant services, with OD up to 56'' (1422mm) and wall thickness up to 140mm. Based on customer's project requirements, TIPTOP will offer a satisfactory project solution.
1. Standards:
ASTM A335 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
2. Application:
For high pressure boiler and steam header pipes; petrochemical industry pipes; thermal power plant; nuclear power plant; USC boiler.
3. Ordering Information
Quantity (feet, meters, or number of lengths),
Name of material (seamless alloy steel pipe),
Grade (P22),
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 | ||
| P22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 | ... |
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
Each pipe shall be ultrasonically examined full section over its entire length. If it is not possible to perform the examination prior to the pieces being cut to final length, the area on each end of each piece not accessible for examination (dead zone), if any, shall be examined by a procedure approved by customers that employs a nondestructive examination method.
