对夹旋启式止回阀 LJH77X-10C,LJH77H-25C,JH77Y-25I,LJH77W-10C,LJH77W-25P,LJH77X-40C,LJH77W-16P,




阀杆


2Crl3


lCrl8N19Tl


20r13




阀体密封副


-


堆焊合金钢


堆焊硬质合金


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01/22 03:48