U型多层金属波纹管
u-form multilager metallic bellows
波纹金属包嵌石棉垫片
corrugated metal gasket with asbestos inserted
波纹金属接合填密环
corrugated metal joint ring
镀锌六角金属丝网
galvanized hexagonal wire mesh
非金属-金属转化
nonmetal-metal transition
焊接金属波纹管
welded m etal bellow
welded metal bellows
welded metal bellow seals
Keywordwelded metal bellow
welded metal bellow
weld metal bellow
焊接金属波纹管机械密封
welded metal bellow type mechanical seal
活塞环金属填料
metallic piston rod packing
夹金属丝网石棉胶板
compressed asbestos fibre jointing with steel wire