A Fluid Steel Pipe is a seamless or welded steel tube engineered for fluid transport applications. The core principle is its ability to serve as a pressure vessel, containing the fluid while resisting the mechanical stresses, chemical attacks, and thermal loads imposed by the medium it carries.
Fluid Steel Pipe Technical
Chemical Components & Mechanical Properties
| Standard | Grade | Chemical Components (%) | Mechanical Properties | |||||
| C | Si | Mn | P | S | Tensile STrength(Mpa) | Yield STrength(Mpa) | ||
| ASTM A53 | A | ≤0.25 | – | ≤0.95 | ≤0.05 | ≤0.06 | ≥330 | ≥205 |
| B | ≤0.30 | – | ≤1.2 | ≤0.05 | ≤0.06 | ≥415 | ≥240 | |
| ASTM A106 | A | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥415 | ≥240 |
| B | ≤0.35 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥485 | ≥275 | |
| Pipe types | Pipe sizes(mm) | Tolerances |
| Hot rolled | OD<50 | ±0.50mm |
| OD≥50 | ±1% | |
| WT<4 | ±12.5% | |
| WT 4~20 | +15%, -12.5% | |
| WT>20 | ±12.5% | |
| Cold drawn | OD 6~10 | ±0.20mm |
| OD 10~30 | ±0.40mm | |
| OD 30~50 | ±0.45 | |
| OD>50 | ±1% | |
| WT≤1 | ±0.15mm | |
| WT 1~3 | +15%, -10% | |
| WT >3 | +12.5%, -10% |
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