薄肉ガス管、構造用鋼管（STK）
規格長さ
5.5m 6m 12m
| 寸 法 （mm） | kg/m | |||
| インチ | 呼称 | 外径 | t | |
| 1/2 | 15A | 21.7 | 1.9 | 0.928 |
| 1/2 | 15A | 21.7 | 2.3 | 1.10 |
| 3/4 | 20A | 27.2 | 1.9 | 1.19 |
| 3/4 | 20A | 27.2 | 2.3 | 1.41 |
| 1.0 | 25A | 34.0 | 2.3 | 1.80 |
| 1.2 | 32A | 42.7 | 2.3 | 2.29 |
| 1.2 | 32A | 42.7 | 3.2 | 3.12 |
| 1.5 | 40A | 48.6 | 2.3 | 2.63 |
| 1.5 | 40A | 48.6 | 3.2 | 3.58 |
| 2.0 | 50A | 60.5 | 2.3 | 3.30 |
| 2.0 | 50A | 60.5 | 3.2 | 4.52 |
| 2.5 | 65A | 76.3 | 2.8 | 5.08 |
| 2.5 | 65A | 76.3 | 3.2 | 5.77 |
| 3.0 | 80A | 89.1 | 2.8 | 5.96 |
| 3.0 | 80A | 89.1 | 3.2 | 6.78 |
| 3.5 | 90A | 101.6 | 3.2 | 7.76 |
| 4.0 | 100A | 114.3 | 3.5 | 9.56 |
| 5.0 | 125A | 139.8 | 3.5 | 11.80 |
| 6.0 | 150A | 165.2 | 3.7 | 14.70 |
| 7.0 | 175A | 190.7 | 5.3 | 24.20 |
| 8.0 | 200A | 216.3 | 4.5 | 23.50 |
| 10.0 | 250A | 267.4 | 5.8 | 37.40 |
| 12.0 | 300A | 318.5 | 6.9 | 53.00 |