WJ45H Y型直流式波纹管截止阀

DJ41Y低温截止阀

J11W不锈钢内螺纹截止阀 美标内螺纹截止阀

WJ41H、WJ41W国标波纹管截止阀

J44B角式氨用截止阀

J41H、J41Y、J41W 国标截止阀

J941H电动法兰截止阀

J41B/F-16P/25P不锈钢氨用截止阀

JB11W不锈钢丝扣截止阀 不锈钢丝扣截止阀

WJ44H-16直角式波纹管截止阀

U11SM-16/25C耐高温蒸汽 丝口柱塞阀 锅炉专用阀

U41SM-16C柱塞阀 法兰柱塞阀 高温蒸汽柱塞阀