| Materials | Specification | Requirements | |||
| Standared | Mechanical Properties | ||||
| Welded Pipe | Φ8×1.0×6000 _St12 |
OD | Φ8.0mm～8.10mm | T/S（Mpa） | ≥270MPa |
| WT | 1.0±0.08 mm | E/S（Mpa） | (130-260)Mpa | ||
| Height of ID Scarf | -0.05mm～+0.15mm | ||||
| Expansion | ＞25% | expansion test | / | ||
| Surface | GBK | crushing test | / | ||
| Welded Pipe | Φ10×1.0×4500_St12 | OD | Φ10±0.1mm | T/S（Mpa） | ≥270MPa |
| WT | 1.0±0.08 mm | E/S（Mpa） | (130-260)Mpa | ||
| Height of ID Scarf | -0.05mm～+0.15mm | ||||
| Expansion | ＞35% | expansion test | / | ||
| Surface | GBK | crushing test | / | ||
| Welded Pipe | Φ16×1.2×6000 _ST12 |
OD | Φ16±0.1mm | T/S（Mpa） | ≥270MPa |
| WT | 1.2±0.1mm | E/S（Mpa） | (130-260)Mpa | ||
| Height of ID Scarf | -0.05mm～+0.15mm | ||||
| Expansion | ＞25% | expansion test | / | ||
| Surface | GBK | crushing test | / | ||
| Welded Pipe | Φ17.3×1.0×6000 _St12 |
OD | Φ17.3±0.1mm | T/S（Mpa） | ≥270MPa |
| WT | 1.0±0.08 mm | E/S（Mpa） | (130-260)Mpa | ||
| Height of ID Scarf | -0.05mm～+0.15mm | ||||
| Expansion | ＞27% | expansion test | / | ||
| Surface | GBK | crushing test | / | ||
| Welded Pipe | Φ17.3×1.2×6000 _St12 |
OD | Φ17.3±0.1mm | T/S（Mpa） | ≥270MPa |
| WT | 1.2±0.1mm | E/S（Mpa） | (130-260)Mpa | ||
| Height of ID Scarf | -0.05mm～+0.15mm | ||||
| Expansion | ＞28% | expansion test | / | ||
| Surface | GBK | crushing test | / | ||
| Welded Pipe | Φ28×1.2×6000 _ST12 |
OD | Φ28±0.1mm | T/S（Mpa） | ≥270MPa |
| WT | 1.2±0.1mm | E/S（Mpa） | (130-260)Mpa | ||
| Height of ID Scarf | -0.05mm～+0.15mm | ||||
| Expansion | ＞15% | expansion test | / | ||
| Surface | GBK | crushing test | / | ||
