HTML SiteMap

This is an HTML Sitemap which is supposed to be processed by search engines like Google, MSN Search and Yahoo With such a sitemap, it's much easier for the crawlers to see the complete structure of your site and retrieve it more efficiently

HTML SiteMapThis is an HTML Sitemap which is supposed to be processed by search engines like Google, MSN Search and Yahoo With such a sitemap, it's much easier for the crawlers to see the complete structure of your site and retrieve it more efficiently

钢管内外径百科钢管内外径知识大全上海有色金属网 SMM

钢管内壁防腐一种用于内涂衬钢管焊口区内壁防腐装置，其特征是由铅、镁、锌或其合金制成的牺牲阳极连接在用导电金属材料制成的接线头上，接线头外缘置于两钢管接口 之间，焊接后与钢质管道成为牢固的连接体，该装置对焊口区内壁涂衬的间断部位实施牺牲阳极保护，从而实现了对内涂衬