American standard low temperature seamless steel pipe, American standard low temperature seamless steel pipe implements ASME SA-333M, GB/T18984 standards. Seamless steel pipes used for cryogenic pressure vessel piping and cryogenic heat exchanger piping. Products can be ordered according to user requirements.
Seamless and welded nominal pipes for low temperature: executive standard: ASME SA -333M, commonly used grades: GR.3, Gr.6, Gr.8, etc.
Seamless steel pipes for low-temperature pipelines: Implementation standard: GB/T18984, commonly used grades: 16MnDG, 06Ni3MoDG, 06Ni9MoDG, etc.
Chemical Requirements
| Composition, % | |||
| Element | Grade 1 | Grade 3 | Grade 6 |
| Carbon, max | 0.30 | 0.19 | 0.30 |
| Manganese | 0.40 – 1.06 | 0.31 – 0.64 | 0.29 – 1.06 |
| Phosphorous, max | 0.025 | 0.025 | 0.025 |
| Sulfur, max | 0.025 | 0.025 | 0.025 |
| Silicon | 0.18 -0.37 | 0.10 min | |
| Nickel | 3.18 – 3.82 | ||
| Grade 1 | Grade 3 | Grade 6 | |||||
| psi | MPa | psi | MPa | psi | MPa | ||
| Tensile Strength, min | 55,000 | 380 | 65,000 | 450 | 60,000 | 415 | |
| Yield Strength, min | 30,000 | 205 | 35,000 | 240 | 35,000 | 240 | |
| Longitudinal | Transverse | Longitudinal | Transverse | Longitudinal | Transverse | ||
American standard low-temperature seamless steel pipe is a kind of seamless steel pipe suitable for low-temperature environments. It is usually used in low-temperature transportation pipelines such as oil, natural gas, and liquefied gas, as well as in low-temperature pressure vessels, storage tanks, pipelines and other equipment.
The production and inspection standards of American standard low-temperature seamless steel pipes are usually carried out in accordance with American Petroleum Institute (API) standards, American Society of Mechanical Engineers (ASME) standards, American Society for Testing and Materials (ASTM) standards, etc.
Its material is usually low carbon steel, alloy steel, etc. It has excellent low-temperature toughness, corrosion resistance, fatigue resistance and other characteristics, and can maintain good mechanical properties and service life at extremely low temperatures.
