HG/T 20537.1-1992 Stainless steel welded pipes for AISI stainless steel specification selection

HG/T 20537.2-1992 Technical requirements for welded austenitic stainless steel pipes used in shell and tube heat exchangers HG/T 20537.3-1992 The technical requirements for welded steel pipes of austenitic stainless steel used in chemical installations HG/T 20537.4-1992 Technical requirements for large-diameter welded steel pipes made of austenitic stainless steel used in chemical equipment

GB 150-1998 Steel pressure vessels GB/T 150.1-2011 Pressure vessels—Part 1:General requirements GB/T 150.1-2024 Pressure vessels—Part 1:General requirements GB/T 150.2-2011 Pressure vessels—Part 2:Materials GB/T 150.2-2024 Pressure vessels—Part 2:Materials GB/T 150.3-2011 Pressure vessels—Part 3:Design GB/T 150.3-2024 Pressure vessels—Part 3:Design GB/T 150.4-2011 Pressure vessels—Part 4:Fabrication,inspection and testing,and acceptance GB/T 150.4-2024 Pressure vessels—Part 4:Fabrication,inspection and testing,and acceptance GB 151-1999 Tubular heat exchangers GB/T 151-2014 Heat exchangers GB/T 3323-1987 Methods for radiographic inspection and classification of radiographs for fusion welded butt joints in steel GB/T 3323-2005 Radiographic examination of fusion welded joints in metallic materials GB/T 3323.1-2019 Non-destructive testing of welds—Radiographic testing—Part 1:X-and gamma-ray techniques with film GB/T 3323.2-2019 Non-destructive testing of welds—Radiographic testing—Part 2:X-and gamma-ray techniques with digital detectors HG/T 20537.2-1992 Technical requirements for welded austenitic stainless steel pipes used in shell and tube heat exchangers HG/T 20537.3-1992 The technical requirements for welded steel pipes of austenitic stainless steel used in chemical installations HGJ 15 HGJ 19 HGJ 43 HG/T 20537.4-1992 Technical requirements for large-diameter welded steel pipes made of austenitic stainless steel used in chemical equipment GB/Z 150-2025 Guide for magnetizing behaviour of permanent magnets GB/T 151-2026 Heat exchangers GB/Z 151-2026 Fire prevention measures on converters for high-voltage direct current(HVDC)systems,static var compensators(SVC)and flexible AC transmission systems(FACTS)and their valve halls