3. 结构用不锈钢无缝钢管 (GB/T14975-1994) (1) 尺寸规格 6-17, 6-18 (2) 允许偏差 6-20 (3) 牌号和化学成分 6-19 (4) 力学性能 6-21 (5) 用途 适于一般结构及机械结构用 表 6-17 结构用不锈钢热压（挤，扩）无缝钢管的尺寸规格 外径壁厚 4.5 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 24 25 26 28 68 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 70 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 73 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 76 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 80 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 83 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 89 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 95 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 102 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 108 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 114 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 121 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 127 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 133 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 140 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 146 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 152 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 159 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 168 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 180 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 194 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 219 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 245 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 237 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 325 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 351 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 377 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 426 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 注： ◎ 表示热轧钢管规格。 表 6-18 结构用不锈钢冷拔（轧）无缝钢管的尺寸规格 外径壁厚 1.0 1.2 1.4 1.5 1.6 2.0 2.2 2.5 2.8 3.0 3.2 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 9.0 9.5 10 11 12 13 14 15 10 ● ● ● ● ● ● ● ● 11 ● ● ● ● ● ● ● ● 12...
