seamless alloy steel tubing
A333 seamless steel pipe is a metal material widely used in petroleum, chemical industry, electric power and other fields.
A333 Gr1 Gr2 Gr3 seamless alloy steel pipe has high strength and hardness, and has good plasticity and toughness. At room temperature, its tensile strength can reach 500~700MPa, yield strength is 270~410MPa, and elongation is 18%~22%. At lower temperatures, its strength and hardness will not be significantly reduced, while having good impact resistance and fatigue resistance.
The main components of A333 Gr1 Gr2 Gr3 low temperature steel pipe include iron, carbon, chromium, nickel, manganese and other elements. Among them, chromium has excellent corrosion resistance, while the addition of nickel further enhances the corrosion resistance and toughness of the material. In addition, A333 GR.6 seamless steel pipe also contains a certain amount of silicon, phosphorus, sulfur and other elements, which have a certain impact on the mechanical properties and processing properties of the material.
A333 Gr1 Gr2 Gr3 Chemical Composition (%)
|
|
C(max) |
Mn |
P(max) |
S(max) |
Si |
Ni |
|
Grade 1 |
0.03 |
0.40 – 1.06 |
0.025 |
0.025 |
|
|
|
Grade 3 |
0.19 |
0.31 – 0.64 |
0.025 |
0.025 |
0.18 – 0.37 |
3.18 – 3.82 |
|
Grade 6 |
0.3 |
0.29 – 1.06 |
0.025 |
0.025 |
0.10 (min) |
|
Wall Thickness & Tolerance
|
Outside Diameter, inch |
Tolerance, % |
|
1/8≤OD≤2-1/2 |
+20.0/-12.5 |
|
3≤OD≤18, WT/OD≤5% |
+22.5/-12.5 |
|
3≤OD≤18, WT/OD>5% |
+15.0/-12.5 |
|
OD≥20, WT/OD≤5% |
+22.5/-12.5 |
|
OD≥20, WT/OD>5% |
+15.0/-12.5 |
ASTM A333 Grade 3 Alloy Seamless Steel Pipes
A333 GR1 GR3 GR6 Alloy steel pipe Characteristics
- Low-Temperature Toughness: ASTM A333/ASME SA333 steel pipes undergo special treatment, exhibiting excellent low-temperature toughness. They maintain superior mechanical properties and impact toughness in environments ranging from -45°C to -195°C.
- High Strength: These steel pipes possess high tensile strength and yield strength, enabling them to withstand significant pressure and loads.
- Good Weldability: ASTM A333/ASME SA333 steel pipes exhibit good weldability and can be joined using various welding methods, such as arc welding and resistance welding.
- Corrosion Resistance: These steel pipes demonstrate excellent corrosion resistance in low-temperature environments, resisting the erosion of various corrosive media.
A333 GR1 GR3 GR6 Seamless steel pipe Application Areas
ASTM A333/ASME SA333 seamless and welded steel pipes for cryogenic equipment are primarily used in the following areas:
- Cryogenic Pressure Vessels: Such as liquefied natural gas (LNG) storage tanks, liquid oxygen storage tanks, etc.
- Cryogenic Heat Exchangers: Such as heat exchangers in air separation equipment, condensers in refrigeration systems, etc.
- Other cryogenic equipment: such as cryogenic pipelines, cryogenic valves, etc.
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