Class150
|
碳钢HG20622(BL美)法兰盖美标法兰盲板 class150/300/600
碳钢WCB铸钢美标法兰球阀class150#磅浮动球阀门Q41F-150lbC PN20 |
|
碳钢HG20622(BL美)法兰盖美标法兰盲板 class150/300/600
碳钢WCB铸钢美标法兰球阀class150#磅浮动球阀门Q41F-150lbC PN20 |
