发布时间:2025-02-10 15:35:04
注:S是钢管的公称壁厚,D是钢管公称外径。
偏差等级 | 允许偏差 | |||
---|---|---|---|---|
0.1<S/D | 0.05<S/D≤0.1 | 0.025<S/D≤0.05 | S/D≤0.025 | |
S1 | ±15%,最小±0.6mm | ±15%,最小±0.6mm | ±15%,最小±0.6mm | ±15%,最小±0.6mm |
S2|A | ±12.5%,最小±0.4mm | ±12.5%,最小±0.4mm | ±12.5%,最小±0.4mm | ±12.5%,最小±0.4mm |
S2|B | +正偏差取决于重量要求,-12.5% | +正偏差取决于重量要求,-12.5% | +正偏差取决于重量要求,-12.5% | +正偏差取决于重量要求,-12.5% |
S3|A | ±10%,最小±0.2mm | ±10%,最小±0.2mm | ±10%,最小±0.2mm | ±10%,最小±0.2mm |
S3|B | ±10,最小0.4mm | ±12.5,最小0.4mm | ±12.5,最小0.4mm | ±15,最小0.4mm |
S3|C | +正偏差取决于重量要求,-10% | +正偏差取决于重量要求,-10% | +正偏差取决于重量要求,-10% | +正偏差取决于重量要求,-10% |
S4|A | ±7.5%,最小±0.15mm | ±7.5%,最小±0.15mm | ±7.5%,最小±0.15mm | ±7.5%,最小±0.15mm |
S4|B | ±7.5%,最小±0.2mm | ±10%,最小±0.2mm | ±12.5%,最小±0.2mm | ±15%,最小±0.2mm |
S5 | ±5%,最小±0.10mm | ±5%,最小±0.10mm | ±5%,最小±0.10mm | ±5%,最小±0.10mm |