焊接式止回阀/3ASizeB2DA1/287.012.776.53/487.019.176.5187.025.476.511/287.038.176.52100.050.887.921/2115.063.596.53128.076.2116.54164.0101.6156.5焊接式止回阀/DINSizeB2DADN1587.018.076.5DN2087.022.076.5DN2587.028.076.5DN3287.034.076.5DN4087.040.076.5DN50100.062.067.9DN65115.070.096.5DN80128.085.0116.5DN100164.0104.0156.6焊接式止回阀ISO/IDFSizeB2DAφ1987.019.076.5φ2587.025.476.5φ3287.032.076.5φ3887.038.176.5φ45100.045.088.0φ51100.050.888.0φ57100.057.088.0φ63115.063.596.5φ76128.076.2116.5φ89128.089.0116.5φ102164.0101.6156.5φ108164.0108.0156.5焊接式止回阀/***SSizeB2DA2587.025.476.53287.031.876.53887.038.176.551100.050.887.963115.063.596.5)