目前不锈钢管有两种制造管子的方式:无缝钢管(seamless)、焊接或是电阻焊接(electric resistance welding,ERW)。


无缝钢管是用挤型或是辊式穿孔方式+冷轧或冷拔相结合制造。


焊接或电阻焊接管(Electric resistance welding)是将金属片折弯成管状后,在边缘部分焊接接合,因此在管的侧面会有焊接缝。


中国不锈钢管标准:


GB/T14976-2012 流体输送用不锈钢无缝管


GB/T14975-2012 结构用不锈钢无缝钢管


GB/T12771-2012 流体输送用不锈钢焊接钢管


GB/T12771-2012 机械结构用不锈钢焊接钢管


GB/T 31928-2015 船舶用不锈钢无缝钢管


GB13296-2013 锅炉、热交换器用不锈钢无缝钢管


GB/T3639-2009 冷拔或冷轧精密无缝钢管


GB/T21833-2008 奥氏体-铁素体型双相不锈钢无缝钢管


GB/T21833.2-2020 奥氏体-铁素体型双相不锈钢无缝钢管


美国不锈钢管标准:


ASTM A312 无缝和焊接奥氏体不锈钢公称管(Standard Specifification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes)


ASTM A213 无缝铁素体及奥氏体合金钢锅炉、过热器,热交换器管(Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes)


ASTM A269 无缝铁素体及奥氏体不锈钢泛用管(Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service)


ASTM A270 无缝铁素体及奥氏体不锈钢无菌管(Standard Specification for Seamless and Welded Austenitic Stainless Steel Sanitary Tubing)


ASTM A511 无缝铁素体及奥氏体不锈钢结构管(Standard Specification for Seamless Stainless Steel Mechanical Tubing)


ASTM A513 电阻焊碳钢及合金钢结构管(Standard Specification for Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing)


ASTM A554 焊接不锈钢结构管(Standard Specification for Welded Stainless Steel Mechanical Tubing)


British Standard 1387:1985 用于螺纹和套筒钢管和管子的规格,适用于焊接及配合BS21的管螺纹(Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads)


ASTM A790标准规范无缝和焊接铁素体/奥氏体不锈钢管(Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe)


ASTM A789一般用途无缝焊接铁素体和奥氏体不锈钢管(Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service)


欧洲不锈钢管标准:EN10216-5(无缝钢管压力用途-技术交付条件-第5部分:不锈钢管)


俄罗斯不锈钢管标准:G0ST 9941-81 冷(温)加工抗腐蚀无缝钢管


日本不锈钢管标准:JIS G3446-2017 机械和结构用不锈钢钢管、JIS G3459 -2017 管道用不锈钢管