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ASTM A333 Pipe
ASTM A333 Pipe
ASTM A333 pipe is a carbon and alloy steel pipe available in seamless and welded forms, designed for low-temperature service and applications that require high notch toughness. This standard includes a total of 9 grades: Grade 1, 3, 4, 6, 7, 8, 9, 10, and Grade 11. Among these, ASTM A333 Grade 6 pipe is the most widely used due to its excellent impact resistance down to -45°C and suitability for cold climate environments. This low-temperature steel pipe is commonly utilized in oil and gas pipelines, refineries, power plants, cryogenic processing facilities, and natural gas transmission systems.
Product Specifications
| Item | Grade 1 | Grade 3 |
| Size Range | OD:10.3-660 mm SCH:STD/XS/XXS/custom Length:6m/12m/random | OD:10.3-660 mm SCH:STD/XS/XXS/custom Length:6m/12m/random |
| C(%) | ≤0.30 | ≤0.19 |
| Mn(%) | 0.40-1.06 | 0.31-0.64 |
| P(%) | ≤0.025 | ≤0.025 |
| S(%) | ≤0.025 | ≤0.025 |
| Si(%) | 0.10-0.40 | 0.18-0.37 |
| Cu(%) | ≤0.40 | ≤0.40 |
| Ni(%) | ≤0.40 | 0.47-0.98 |
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Minimum Impact Test Temperature of ASTM A333 |
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| Grade | Minimum Test Temperature (°F) | Minimum Test Temperature (°C) |
| Grade 1 | -50°F | -45°C |
| Grade 3 | -150°F | -100°C |
| Grade 4 | -150°F | -100°C |
| Grade 6 | -50°F | -45°C |
| Grade 7 | -100°F | -75°C |
| Grade 8 | -320°F | -195°C |
| Grade 9 | -100°F | -75°C |
| Grade 10 | -75°F | -60°C |
| Grade 11 | -320°F | -195°C |
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More Details
ADVANTAGES
-45℃ still maintains toughness and resists cracking at low temperatures
DISADVANTAGES
Cost is higher than A53, and requires a strict low-temperature test
INDUSTRIES
Energy industry/Chemical industry/Specialty engineering
APPLICATIONS
LNG pipes/refrigeration equipment/polar engineering
MACHINING
Preheating is required to prevent cracking, and low-speed cutting is recommended
WELDING
Low-hydrogen electrodes must be used, RT test after welding.
