GB/T 23609-2023Seamless copper alloy tube for water desalting applications (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 23609-2009 "Copper Alloy Seamless Pipes for Seawater Desalination Units". Compared with GB/T 23609-2009, except In addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) Added code names and changed the status representation method (see Table 1, Table 1 of the 2009 version);

b) Added a brand BFe10-1.5-1 and its two states (O61) and (O81); added a brand BFe10-1-1 (H55) status (see Table 1);

c) The specification range has been changed, the length range has been changed from "3000mm~8000mm" to "1000mm~9000mm", "6000mm~15000mm" is changed to "1000mm~25000mm", "8000mm~35000mm" is changed to "1000mm~35000mm" (see Table 2, Table 2 of the 2009 edition);

d) The allowable deviation of the outer diameter has been changed. from "0.08mm" to "0.06mm", from "0.10mm" to "0.08mm", from "0.12mm" is changed to "0.10mm", "0.15mm" is changed to "0.13mm", and "0.18mm" is changed to "0.16mm" was changed from "0.25mm" to "0.23mm", and a footnote was added "When the allowable deviation of the outer diameter is required to be all () or all When it is (-) one-way deviation, its value is twice the corresponding value in the table. " (See Table 3, Table 4 of the 2009 edition);

e) Added requirements for wall thickness allowable deviation. "When the minimum wall thickness is required, the wall thickness of any part of the pipe should not be less than the specified value." (see 5.2.2);

f) The roundness requirement is deleted (see 3.3.3 of the 2009 version);

g) The length allowable deviation has been changed. from "2.4mm" to "2.0mm", from "3.2mm" to "3.0mm", from "9.5mm" is changed to "9.0mm", and "12.7mm" is changed to "12.0mm" (see Table 4, Table 5 of the 2009 version);

h) Some mechanical property indicators have been changed (see Table 5, Table 6 of the 2009 version);

i) Changed the requirements for residual carbon content on the inner surface of pipes (see 5.8, 3.9 of the 2009 edition);

j) Added the detection method for the chemical composition of pipes, YS/T 482 or YS/T 483 (see 6.1);

k) The requirements for electrochemical corrosion performance have been changed from "determined by negotiation between the supplier and the buyer" to "the potential difference (deltaE) between the inner and outer surfaces of the pipe shall not Should be greater than 0.07V" (see 5.9, 3.10 of the 2009 edition);

l) The measurement method of overall dimensions and their allowable deviations has been changed from "measurement with appropriate measuring tools" to "according to GB/T 26303.1" "According to the regulations" (see 6.2, 4.2 of the 2009 version);

m) Changed the selection of tensile specimen number (see 6.3.1, 4.3.1 of the 2009 version);

n) Added air pressure test method (see 6.7.3);

o) The method for measuring the amount of carbon residue on the inner surface has been changed from "referring to the provisions of Appendix B of YS/T 650-2007" to "according to the provisions of Appendix B of YS/T 650-2007" "According to the provisions of GB/T 33817" (see 6.8, 4.8 of the 2009 edition);

p) The electrochemical corrosion performance test method has been changed, which shall be determined through negotiation between the supply and demand parties or refer to GB/T 10125-1997 or Appendix A "Conduct" is changed to "Provisions in accordance with Appendix A" (see 6.9, 4.9 of the 2009 version);

q) The requirements and detection methods for carbon film testing are deleted (see 3.11 and 4.10 of the 2009 edition);

r) The requirements for inspection and acceptance have been changed. For objections related to surface quality or external dimensions, the time for raising objections has been adjusted from "3 months" to "1 month." Month" (see 7.1.2, 5.1.2 of the 2009 edition);

s) Added the sampling method "in accordance with the provisions of YS/T 668" (see 7.4);

t) Added requirements for numerical rounding and judgment (see 7.5.1);

u) Added accompanying files (see 8.2).

1 Scope

This document specifies the classification and marking, technical requirements, and test methods of copper alloy seamless pipes (hereinafter referred to as "pipes") used in seawater desalination plants. laws, inspection rules, marking, packaging, transportation, storage and accompanying documents and order form content.

This document is applicable to copper alloy seamless pipes used in seawater desalination devices. Copper alloy seamless pipes used in other desalination devices may be implemented as a reference.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 241 Hydraulic test method for metal pipes

GB/T 242 Metal pipe expansion test method

GB/T 246 Flattening test method for metal tubes

GB/T 2828.1 Enumeration sampling inspection procedures Part 1: Batch-by-batch inspection sampling plan retrieved by acceptance quality limit (AQL)

GB/T 4340.1 Vickers hardness test of metallic materials Part 1: Test methods

GB/T 5121 (all parts) Chemical analysis methods for copper and copper alloys

GB/T 5231 Processed copper and copper alloy grades and chemical composition

GB/T 5248 Eddy current flaw detection method for copper and copper alloy seamless pipes

GB/T 8170 Numerical rounding rules and representation and determination of limit values

GB/T 8888 Packaging, marking, transportation, storage and quality certificate of heavy non-ferrous metal processing products

GB/T 10567 (all parts) Residual stress inspection method for copper and copper alloy processed materials

GB/T 26303.1 Methods for testing external dimensions of copper and copper alloy processed materials Part 1: Pipes

GB/T 33817 Method for determination of carbon content on inner surface of copper and copper alloy pipes

GB/T 34505-2017 Room temperature tensile test method for copper and copper alloy materials

YS/T 347 Method for determination of average grain size of copper and copper alloys

YS/T 482 Analysis methods for copper and copper alloys Spark discharge atomic emission spectrometry

YS/T 483 Analysis method for copper and copper alloys X-ray fluorescence spectrometry (wavelength dispersion type)

YS/T 668 Sampling method for physical and chemical testing of copper and copper alloys

3 Terms and definitions

There are no terms or definitions to be defined in this document.

4 Classification and tagging