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(续上期)大口径无缝钢管的焊接我单位承包的煤气主管道施工中,将“大口径(Φ426mm×10mm)无缝钢管(10号钢)的焊接”列为严格要求项目。除要求接头为单面焊双面成形外,对管道焊缝的致密性和耐蚀性
(Continued) Welding of Large Diameter Seamless Steel Pipe During the construction of the main gas pipeline contracted by our unit, “welding of large diameter (Φ426mm × 10mm) seamless steel pipe (No. 10 steel)” was listed as a strictly required item. In addition to the requirements for single-sided welding double-sided forming, the pipe weld densification and corrosion resistance