What is ASTM A671 CB65
ASTM A671 CB65 refers to carbon steel welded pipes that comply with the American Society for Testing and Materials (ASTM) A671 standard and have a CB65 grade. The following is a detailed introduction to ASTM A671 CB65:
ASTM A671 Standard Overview
ASTM A671 standard is applicable to electric fusion welded steel pipes used in the manufacture of pressure vessel quality steel plates for high pressure purposes at room and low temperatures.
Plates and standards used for A671 CB65 steel pipes
| Steel Pipe Grade | Steel Type | Steel Plate Standard ASTM | Steel Plate Grade |
| CB 65 | Ordinary carbon steel, killed steel | A515/A515M | Grade 65 |
A671 CB65 EFW Pipe Heat treatment parameters
|
Steel Pipe Grade |
ASTM Standard |
Post-weld heat treatment Temperature (stress relief) °F (°C) |
Normalizing temperature max Except where otherwise specified °F (°C) |
Quenching temperature max Except where otherwise specified °F (°C) |
Tempering temperature min °F (°C) |
Precipitation hardening Heat treatment temperature °F (°C) |
| CB 65 | A515/A515M(65) |
1100～1250 (590～680) |
1750 (950) |
- |
- |
- |
|
ⓐ "-" in the table means no requirement. ⓑ The number in the grade indicates the minimum tensile strength in ksi. |
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