1 Scope
This standard specifies the order contents, classification and code, dimensions, shape, weight and allowable deviations, technical requirements, test methods, inspection rules, packing, marking and quality certificate of high-pressure seamless steel tubes for diesel engine.
This standard is applicable to the cold-drawn seamless steel tubes used for manufacturing high-pressure oil tubes of diesel injection system.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding the corrections), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 222 Method of Sampling Steel for Determination of Chemical Composition and Allowable Variations for Product Analysis
GB/T 223.12 Methods for Chemical Analysis of Iron, Steel and Alloy-The Sodium Carbonate Separation-Diphenyl Carbazide Photometric Method for the Determination of Chromium Content
GB/T 223.53 Methods for Chemical Analysis of Iron, Steel and Alloy; The Flame Atomic Absorption Spectrophotometric Method for the Determination of Copper Content (eqv ISO/DIS 4943)
GB/T 223.54 Methods for Chemical Analysis of Iron, Steel and Alloy-The Flame Atomic Absorption Spectrophotometric Method for the Determination of Nickel Content (eqv ISO/DIS 4940)
