external thread valve 外螺纹阀

Box thread valve 螺纹阀门

CQ Thread ball valve CQ螺纹球阀

valve thread 气门螺纹

Internal thread cut-off valve 内螺纹截止阀

High pressure thread electromagnetic valve 高压螺纹电磁阀

thread ball valve 丝扣球阀

male thread throttle valve 外螺纹节流阀

External thread needle valve 进口外螺纹针型阀