Terra Steel
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Seamless rectangular steel tubes, also known as rectangular hollow sections, are manufactured from hot rolled seamless steel pipes. Unlike standard welded sections, these are produced through hydraulic cold drawing, ensuring a seamless structure with tight size tolerances and excellent twist resistance.
| Standard | Grades |
|---|---|
| ASTM A519 | SAE1020, SAE1026, SAE1045, SAE1518, SAE1524, SAE1541, SAE4130, SAE4140, SAE4145, SAE4340, SAE8620 |
| DIN 2391-2 | ST35, ST45, ST52 |
| EN 10305-1 | E195, E235, E355, C35E, C45E, 25CrMo4, 34CrMo4, 42CrMo4 |
| EN 10305-4 | E215, E235, E355 |
| GB/T 3639 | 10#, 20#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn |
| Delivery Condition | BKW (+LC) | BKS (+SR) | GBK (+A) | NBK (+N) |
| Treatment | Cold drawn | Stress relieved | Annealed | Normalized |
Standard export packing includes bundles tied with steel strips. We apply internal and external oil coating for corrosion protection. External packing is reinforced by PVC bags and knit bags. Customized packing or marking is available upon request.
