HH44H-16P耐磨损微阻缓闭止回阀HH44H-16P
面议
HH44H-16P耐磨损微阻缓闭止回阀HH44H-16P
面议
YL空排止回阀
面议
H24X-E不锈钢管系统用H24X-E卫生级焊接止回阀
面议
H42W-10P弱腐蚀介质立式止回阀H42W-10P
面议
HQ45X-10P水用球形止回阀HQ45X-10P
面议
DHH44-10P水类DHH44-10P微阻缓闭消声止回阀
面议
H72X-16T水用H72X-16T黄铜对夹消声止回阀
面议
H63H-320耐高压H63H-320焊接升降角式止回阀
面议
H42Y-320R耐磨、耐高温、耐腐蚀H42Y-320R高压升降式止回阀
面议
GH41Y-16P水、蒸气、油品类GH41Y-16P德标止回阀
面议
YL排水管道用法兰微阻缓闭蝶式止回阀
面议
H64Y-16P适用于水、油品、蒸汽H64Y-16P磅级（美标）电站旋启式止回阀
面议