This standard specifies order contents, dimension, appearance, weight and permissible deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of welded austenitic stainless steel tubes for boiler and heat exchanger.
This standard is applicable to the welded austenitic stainless steel tubes for heat exchangers and middle/low pressure boilers (hereinafter referred to as “steel tubes”).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.11 Iron, Steel and Alloy — Determination of Chromium Content — Visual Titration or Potentiometric Titration Method
GB/T 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy — The Sodium Thiosulfate Separation Iodimetric Method for the Determination of Copper Content
GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy — The Neocuproine-chloroform Extraction Photometric Method for the Determination of Copper Content
GB/T 223.25 Methods for Chemical Analysis of Iron, Steel and Alloy — The Dimethylglyoxime Gravimetric Method for the Determination of Nickel Content
GB/T 223.28 Methods for Chemical Analysis of Iron, Steel and Alloy — The α-benzoinoxime Gravimetric Method for the Determination of Molybdenum Content
GB/T 223.36 Methods for Chemical Analysis of Iron, Steel and Alloy — the Neutral Titration Method for the Determinaion of Nitrogen Content after Distillation Separation
GB/T 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy — The Indophenol Blue Photometric Methods for the Determination of Nitrogen Content after Distillation Separation
GB/T 223.40 Iron, Steel and Alloy — Determination of Niobium Content by the Sulphochlorophenol S Spectrophotometric Method
GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy — The Sodium Arsenite-sodium Nitrite Titrimetric Method for the Determination of Manganese Content"
GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy — The Perchloric Acid Dehydration Gravimetric Method for the Determination of Silicon Content
GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy — The Butyl Acetate Extraction Photometric Method for the Determination of Phosphorus Content
GB/T 223.84 Steel and Alloy — Determination of Titanium Content — Diantipyrylmethane Spectrophotometric Method
GB/T 24593-2018 The following standards are cited：
