1 Scope
This national standard specifies order content, dimension, shape, weight, technical requirements, test methods, test rules, packaging, marking and quality certificate of seamless steel tubes for liquid service.
This standard is applicable to the general seamless steel tubes for liquid service.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments (excluding amending error in the text) to, or revisions of, any of these publications do not be applied. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not. For undated references, the latest edition of the normative document is applicable to this national standard.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.3 Chemical analysis method for steel and alloy-The diantipyryl methane phosphomolybdate gravimetric method for the determination of phosphorus content
GB/T 223.5 Methods for chemical analysis of iron, steel and alloy-The reduced molybdosilicate spectro-photometric method for the determination of acid-soluble silicon content
GB/T 223.9 Methods for chemical analysis of iron, steel and alloy-The chrome azurol S photometric method for the determination of aluminium content
GB/T 223.11 Chemical analysis method for steel and alloy-The ammonium persulfate oxidation volumetric method for the determination of chromium content
GB/T 223.12 Chemical analysis method for steel and alloy-The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
GB/T 223.13 Methods for chemical analysis of iron, steel and alloy-The ammonium ferrous sulfate titration method for the determination of vanadium content
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy-The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
GB/T 223.16 Methods for chemical analysis of iron, steel and alloy-The chromotropic acid photometric method for the determination of titanium content
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
