qjt200-10截止阀200-10管道截止阀直通式截止阀 氧气汇流排截止阀

高压截止阀技术参数:型号:11h/j61h/j11y/j61y口径范围:15mm-100mm

氧气专用法兰截止阀 yj41w-16p304不锈钢禁油脱脂dn2540506580100

yj41w-不锈钢氧气截止阀yj41w

三科阀门厂家直销yj41w不锈钢氧气专用截止阀