大口径直缝焊管的相关规格 920 179.92202.19224.41246.58268.70290.77312.79334.76356.68400.40443.91486.13 1016 198.86223.49248.08272.62297.10321.54345.93370.27394.56443.02491.26539.30 1020 199.65224.38249.07273.70298.39322.82347.31371.75396.1444.79493.23541.47 1220 296.39327.95357.47386.94416.36445.73475.58533.58591.88649.98 1420 347.71362.21416.66451.06485.41519.71553.96622.36690.52758.49 1620 397.03436.46475.84515.17554.46593.60632.87711.14789.17867.00
关于大口径直缝焊管
关于我们 当螺旋焊缝附近存在与之相平行的缺陷时,由于螺旋焊缝受力较小,故其扩展的危险性不如直焊缝大
7月28日文昌外径500的大口径直缝焊管今日成交欠佳
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