WJ41W-PN16-DN65WJ41W-16P WJ41W-25P WJ41W-40P WJ41W ¥338.00 WJ41W-PN16-DN80WJ41W 不锈钢波纹管法兰截止阀 WJ41W-25P 田截止阀 ¥338.00 WJ41W-PN16-DN100门厂 WJ41H、WJ41W 型 PN16~PN40 波纹管阀 ¥338.00 WJ41W-PN16-DN125WJ41W不锈钢波纹管法兰截止阀 WJ41W-25P ¥338.00 WJ41W-PN16-DN150波纹管截止阀采用成形不锈钢波纹管截止阀 ¥338.00 WJ41W-PN16-DN200截止阀WJ41W-16P DN250 波纹管截止阀 高温截止阀 ¥338.00