ansi壁厚标准
美标(astm)日标(jis)德标(din)_钢管外径与壁厚
外径尺寸和壁厚表美标ansib3610b3619m
外径尺寸和壁厚表(美标ansib361b3619m)
10m,b36.19m)
Tips:Do Not Provide
Personal Loans: Go Easy On Your Finances
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