壓針型閥 選購指南
J21W-320P高壓針型閥-J13W高壓內螺紋針型閥批發零售
外螺紋截止閥主要零件材料Materials for main parts 零件名稱Part name 閥桿、閥蓋Stem,Bonnet 閥桿、閥瓣Stem,Disc 填料Packing J23W-16P 鉻鎳不銹鋼 Cr.Ni Stainless steel 鉻鎳不銹鋼 Cr.Ni Stainless steel ......
外螺紋截止閥主要零件材料Materials for main parts 零件名稱Part name 閥桿、閥蓋Stem,Bonnet 閥桿、閥瓣Stem,Disc 填料Packing J23W-16P 鉻鎳不銹鋼 Cr.Ni Stainless steel 鉻鎳不銹鋼 Cr.Ni Stainless steel ......