| 尺寸公差 | | 標準 | 尺寸(mm) | 允許偏差 | | GB6479-1986 | 外徑 | ≤159 | +1.25%，-1.0% | | >159 | +1.25%，-1.5% | | 壁厚 | 3-20 | +12.5%,-15% | | >20 | ±12.5% | |
| 標準 | 縱向力學性能 | 交貨狀態 | | GB6479-1986 | 鋼號 | 抗拉強度(MPa) | 屈服強度(MPa) | 延伸率(%) | 沖擊(J) | 布氏硬度 | | 不小于 | 不大于 | 熱軋態 | | 10 | 330-490 | 205 | 24 | - | - | | 20 | 410-50 | 245 | 21 | 39 | - | | 12CrMo | 410-560 | 205 | 21 | 55 | 156 | 回火處理 | | 15CrMo | 440-640 | 235 | 21 | 47 | 170 | | 1Cr2Mo | ≥(390) | (175) | (22) | (79) | (79) | 回火處理 | |
| 化學成份 | | 鋼號 | C | Mn | Si | Cr | Mo | Ni | S | P | | 10 | 0.07-0.14 | 0.35-0.65 | 0.17-0.37 | ≤0.15 | - | ≤0.25 | ≤0.035 | ≤0.035 | | 20 | 0.17-0.24 | 0.35-0.65 | 0.17-0.37 | ≤0.25 | - | ≤0.25 | ≤0.035 | ≤0.035 | | 12CrMo | 0.08-0.15 | 0.40-0.70 | 0.17-0.37 | 0.40-0.70 | 0.40-0.55 | ≤0.30 | ≤0.035 | ≤0.035 | | 15CrMo | 0.12-0.18 | 0.40-0.70 | 0.17-0.37 | 0.80-1.10 | 0.40-0.55 | ≤0.30 | ≤0.035 | ≤0.035 | | 1Cr2Mo | ≤0.15 | 0.30-0.60 | 0.50-1.00 | 2.15-2.85 | 0.45-0.65 | ≤0.30 | ≤0.035 | ≤0.030 | |
