H42W-100P-DN250阀门H42W-16P法兰式不锈钢立式止回阀304 ¥338.00 Q341F-16P-DN15不锈钢涡轮球阀 Q341F法兰浮动球开关阀 304高温蒸汽手轮切断阀 ¥338.00 Q341F-16P-DN20燃气天然气高温蒸汽铸钢涡轮法兰球阀DN80 100 150 200 ¥338.00 Q341F-16P-DN25Q341F-16C铸钢涡轮法兰球阀涡轮浮动式手动碳钢法兰球阀 ¥338.00 Q341F-16P-DN32阀门Q341F-16C浮动涡轮球阀 燃气气体手动球阀DN100 12 ¥338.00 Q341F-16P-DN40电动调节快开不锈钢丝口扣球阀AC220vDC24v ¥338.00