Details of ASTMA335P11 alloy seamless steel pipes used in industrial projects

First, details of ASTMA335P11 seamless steel pipes

1. Implementation standard of ASTMA335P11 seamless steel pipes: ASTMA335/A335M Specification for high temperature iron tree alloy steel seamless steel pipes

2. ASTMA335P11 seamless steel pipe products should comply with the requirements of TSG D7002 pressure pipeline component type test rules

3. ASTMA335P11 seamless steel pipe product specifications: outer diameter 21.3~760mm, thick wall: 2.0~130mm

4. Production methods of ASTMA335P11 seamless steel pipes: hot rolling, cold drawing, hot expansion, delivery status: heat treatment.

5. Chemical composition of ASTMA335P11 seamless steel pipe: carbon: 0.05~0.15, manganese 0.30~0.60, phosphorus: ≤0.025, sulfur ≤0.025, silicon 0.5~1.0, chromium 1.0~1.5, molybdenum: 0.44~0.62.

6. The tensile strength of ASTMA335P11 seamless steel pipe is ≥415Mpa, the yield strength is ≥205Mpa, and the elongation after fracture is ≥30%.

Second, the surface requirements of ASTMA335P11 seamless steel pipe

Surface quality: the finished steel pipe should have reasonable straightness; all defects with a depth of ≥12.5%S should be ground, repaired, or cut off, and the repaired area should not appear in a large area: mechanical scratches, scratches, and pits with a depth of ≤1.6mm and that can ensure the minimum wall thickness are allowed, otherwise they should be ground or cut off: scars, cracks, folds, tears or strips with a depth of ≤5%S are allowed, otherwise they should be ground; all grinding places should ensure the minimum wall thickness, but the outer diameter can be reduced by the grinding amount.

Third, the hydraulic pressure test of ASTMA335P11 seamless steel pipe

Water pressure for each pipe. If the party requires, non-destructive testing can be used instead of water pressure, or it can be delivered without water pressure and non-destructive testing, or it can be tested after non-destructive testing.

Fourth, ordering instructions

The order form must include the following 11 items:

1. Quantity (feet, meters, or roots)

2. Material name (seamless alloy steel nominal pipe)

3. Grade ASTMA335P11,

4. Manufacturing method (hot finishing or cold drawing)

5. Use one of the following specifications

5.1. NPS and pipe wall thickness serial number,

5.2. Outside diameter and nominal wall thickness,

5.3. Outside diameter and minimum wall thickness,

5.4. Inside diameter and nominal wall thickness,

5.5. Inside diameter and minimum wall thickness

5.6. Length (fixed length and variable length)

5.7. End processing.

5.8. Selection requirements (water pressure and allowable weight deviation).

5.9. Required test report (see A530).

5.10. Standard number.

11 Special requirements or any selected supplementary requirements.