In terms of product structure, low-temperature alloy pipes are usually made of low-carbon steel or low-alloy steel and undergo appropriate alloying treatment to improve their toughness, strength and corrosion resistance in low-temperature environments.
Compared with carbon structural steel, the steel used in low-temperature alloy pipes has the advantages of high strength, good comprehensive performance, long service life, wide application range, and relatively economical. This steel is mostly rolled into plates, profiles, seamless steel pipes, etc., and is It is widely used in bridges, ships, boilers, vehicles and important building structures.
Commonly used materials for cryogenic tubes: Q345B, Q345C, Q345D, Q345E, A333Gr6.
| Characteristic/Application | Description |
|---|---|
| Material | Low-alloy steel for low-temperature service |
| Composition | Carbon, alloy elements (e.g., chromium, nickel, molybdenum) |
| Strength | High tensile and yield strength |
| Toughness | Good impact resistance at low temperatures |
| Corrosion Resistance | Resistance to corrosion in harsh environments |
| Applications | Oil and gas pipelines, cryogenic storage tanks, LNG carriers, offshore structures |
| Fabrication | Welded, seamless, hot-rolled, cold-drawn |
| Standards | ASTM, ASME, DIN, EN, JIS, GB, etc. |
| Testing | Hydrostatic testing, non-destructive testing (NDT), mechanical testing |
