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 ◎ ◎
