H76H对夹双瓣式止回阀、铸钢H76H止回阀
面议H76H对夹双瓣式止回阀、铸钢H76H止回阀
面议HQ44X HQ45X微阻球形止回阀
面议HQ41X无磨损球形止回阀、元冬铸铁球形止回阀
面议HH46X、HH48X、HH49X微阻缓闭蝶式止回阀
面议H76H不锈钢蝶式止回阀、对夹式蝶型止回阀
面议HH44X微阻缓闭止回阀、元冬HH44X止回阀
面议H12T黄铜立式止回阀
面议H41Y法兰锻钢止回阀、国标高压锻钢止回阀
面议H11Y H61Y内螺纹与承插焊锻钢止回阀
面议H72H对夹式高压止回阀、铸钢不锈钢H72H
面议H64Y H61Y高温高压止回阀、高温电站止回阀
面议H76X H76H H76W对夹式蝶型止回阀
面议