[国外标准] ASTM A671-A671M-2010
[国外标准] ASTM A671-96 电熔焊低温碳钢管
[国外标准] ASTM A671-06 电熔焊低温碳钢管
[国外标准] ASTM A671-04 Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower