D373HD373H金属密封蝶阀

HSCHSC笼式单座调节阀

J41HJ41H高压截止阀

D371XD371X信号蝶阀

HLSHLS小口径单座调节阀

J41HJ41H钢制截止阀

AD371X蜗轮对夹式蝶阀AD371X蜗轮对夹式蝶阀

HCNHCN低噪音笼式调节阀

J41HJ41H精铸截止阀

DSJ61HDSJ61H水封截止阀

电动对夹式硬密封蝶阀

D973H电动对夹式多层次硬密封蝶阀