UJ41H柱塞截止阀
U41SM/H铸钢柱塞阀,不锈钢柱塞阀
U44H角式柱塞阀,不锈钢角阀
UJ941H电动柱塞截止阀
UZ41H柱塞闸阀
U11H内螺纹柱塞阀
UJ11H内螺纹柱塞截止阀
BUJ41H保温柱塞截止阀
UJ41H高压柱塞截止阀
