- ASTM A335/ASME SA335
- China
- Stock
- P12
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipes Pipe either hot finished or cold drawn, may be given a final heat treatment at 1200°F [650°C] to 1300°F [705°C] .
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipe
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipe
Standard:ASTM A 335/A 335M
Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipes cover nominal (average) wall seamless alloy-steel pipe intended for high-temperature service.
Pipe ordered to ASTM A335 specification shall be suitable for bending,flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipe Quick Details
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 2.1mm——20 mm.
Outer diameter (OD): 21 mm——509mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
Additional Info
Port of Shipment: Tianjin, China
Payment Terms:T / T, LC
Delivery: 7-15 days after payment
Surface: Tubes will be varnished (Outside only) to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required
Materials and Manufacture
Grade P12—The steel shall be made by coarsegrain melting practice.
Grade P12 Pipe may be either hot finished or cold drawn with the finishing treatment
Heat Treatment:
Pipe of Grades P12, either hot finished or cold drawn, may be given a final heat treatment at 1200°F [650°C] to 1300°F [705°C] .
Chemical Composition of ASTM A335 P12
| Grade | Chemical Composition(%) | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P12 | ≤0.015 | 0.30-0.60 | ≤0.025 | ≤0.025 | ≤0.50 | 0.80-1.25 | 0.45-0.65 |
Mechanical Properties of ASTM A335 P12
| Grade | Mechanical property | ||
| Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | |
| P12 | ≥415 | ≥205 | ≥30 |
Outside diameter tolerances of ASTM A335 Seamless Ferritic Alloy-Steel Pipe
| NPS Designator | Over | Under | ||
| in. | mm | in. | mm | |
| 1⁄8 to 1 1⁄2 , incl. | 1 ⁄ 64 (0.015) | 0.40 | 1 ⁄ 64 (0.015) | 0.40 |
| Over 1 1⁄2 to 4, incl. | 1 ⁄ 32 (0.031) | 0.79 | 1 ⁄ 32 (0.031) | 0.79 |
| Over 4 to 8, incl. | 1 ⁄ 16 (0.062) | 1.59 | 1 ⁄ 32 (0.031) | 0.79 |
| Over 8 to 12, incl. | 3 ⁄ 32 (0.093) | 2.38 | 1 ⁄ 32 (0.031) | 0.79 |
| Over 12 | ± 1 % | |||
Hydrostatic Test
Each length of pipe shall be subjected to the hydrostatic test or nondestructive examination.
Mechanical Tests Required
Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test—For material heat treated in a batch-type furnace, tests shall be made on 5 % of the pipe from each treated lot.
For small lots, at least 1 pipe shall be tested. For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5 % of the lot, but in no case less than 2 pipe.
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