美标壁厚对照表
49.6320
67.7270
87.8900 135.4600 6496.3200 8881.9800 7229.8600 7558.2000
##########
49.63
67.73
87.89 135.46 6496.32 8881.98 7229.86 7558.2
30507.07
相关主题
49.6320
67.7270
87.8900 135.4600 6496.3200 8881.9800 7229.8600 7558.2000
##########
49.63
67.73
87.89 135.46 6496.32 8881.98 7229.86 7558.2
30507.07