GB/T 26024-2021 English PDF

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GB/T 26024-2021: Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system
Status: Valid

GB/T 26024: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 26024-2021	229	Add to Cart	3 days	Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system	Valid
GB/T 26024-2010	439	Add to Cart	3 days	Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system	Obsolete

Similar standards

GB/T 27671   GB/T 26017   GB/T 26302   GB/T 26018   GB/T 26016   

Basic data

Standard ID: GB/T 26024-2021 (GB/T26024-2021)
Description (Translated English): Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H62
Word Count Estimation: 11,153
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 26024-2021: Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Seamless copper and copper alloys tube for valves on air-conditioning and refrigeration system ICS 77:150:30 CCSH62 National Standards of People's Republic of China Replacing GB/T 26024-2010 Copper and copper alloy seamless pipes for valve parts of air conditioning and refrigeration systems Published on 2021-12-31 2022-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted: This document replaces GB/T 26024-2010 "Copper and Copper Alloy Seamless Tubes for Valves of Air-conditioning and Refrigeration Systems", and GB/T 26024- Compared with:2010, except for structural adjustment and editorial changes, the main technical changes are as follows: a) The representation method of pipe material code is added (see 4:1); b) Changed the state representation method (see 4:1, 3:1:1 of the:2010 edition); c) Changed the specification range of TP2 straight pipe, and changed the inner diameter range from "2:0mm~95:0mm" to "2:0mm~ 100:0mm"; change the outer diameter range from "4:0mm~100:0mm" to "3:0mm~105:0mm"; change the wall thickness range from Change "0:5mm~2:0mm" to "0:5mm~2:5mm"; change the length range from "100mm~6000mm" to "1000mm~6000mm" (see 4:1, 3:1:1 of the:2010 edition); d) Changed the specification range of TP2 coil, and changed the outer diameter range from "4:0mm~22:0mm" to "4:0mm~ 24:0mm"; the lower limit of the length of the TP2 coil is added "≥15000mm" (see 4:1, 3:1:1 of the:2010 edition); e) Changed the specification range of H65 straight pipe, and changed the inner diameter range from "14:0mm~42:0mm" to "14:0mm~ 105:0mm"; change the outer diameter range from "20:0mm~45:0mm" to "16:6mm~113:0mm"; change the wall thickness range Change from "1:5mm~3:0mm" to "1:3mm~4:0mm"; change the length range from "100mm~6000mm" is "100mm~3000mm" (see 4:1, 3:1:1 of the:2010 edition); f) Deleted the residual stress test method for H65 pipes: mercurous nitrate test method (see 4:5:1 of the:2010 edition); g) Changed the inclination of the straight pipe with an outer diameter greater than 50mm, and changed "2:5% of the outer diameter" to "2:0% of the nominal outer diameter" (see 5:2:3, 3:3:3 of the:2010 version); h) The maximum arc depth of 100mm~200mm for H65 straight pipe length is 0:20mm, and the maximum for ≥200mm~400mm Arc depth 0:35mm (see 5:2:5); i) Changed the tensile strength of TP2 grade O60 state, changed "≥205MPa" to "≥215MPa" (see 5:3,:2010 edition 3:4); j) Changed the measurement method of size, clarified that the measurement method of pipe size and its allowable deviation should be in accordance with GB/T 26303:1 The straightness inspection of the H65 pipe whose length is less than 400mm is carried out with a feeler gauge (see 6:2, 4:2 of the:2010 edition); k) Changed the grain size of TP2 grade O60 state, changed "0:025mm~0:060mm" to "0:015mm~0:060mm" (see 5:5, 3:7 of the:2010 edition); l) Modified the tensile test method and changed the tensile test method GB/T 228-2002 to GB/T 34505-2017 (see 6:3, 4:3 of the:2010 edition): Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Nonferrous Metals Industry Association: This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243): This document is drafted by: Jiangsu Longda Superalloy Co:, Ltd:, Jiangxi Naile Copper Co:, Ltd:, Guangdong Longfeng Precision Copper Tube Co:, Ltd: Company, Zhejiang Tianning Alloy Material Co:, Ltd:, Changshu Zhongjia New Material Co:, Ltd:, Zhejiang Xingpeng Copper Material Group Co:, Ltd: The main drafters of this document: Zhou Xiangdong, Gao Xin, Liu Jinlong, Zhu Yan, Jiang Hongyun, Zhao Qinhai, Liang Zihao, Luo Qiliang, Song Xixi, Liu Xinwei, Peng Yongcong, Chen Fang, Sun Xinchun, Li Baojin: The previous releases of this document and the documents it replaces are as follows: ---First published in:2010 as GB/T 26024-2010; ---This is the first revision: Copper and copper alloy seamless pipes for valve parts of air conditioning and refrigeration systems

1 Scope

This document specifies the classification, marking and technical requirements of copper and copper alloy seamless pipes (hereinafter referred to as "pipes") used in air conditioning and refrigeration system valves: requirements, test methods, inspection rules, markings, packaging, transportation, storage, accompanying documents and the contents of the order form: This document applies to the use of copper and copper alloys without the Sewing tube:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document: GB/T 242 Metal Pipe Flaring Test Method GB/T 2828:1 Counting Sampling Inspection Procedure Part 1: Lot-by-Lot Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL) GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys GB/T 5231 Processed copper and copper alloy grades and chemical composition GB/T 5248-2016 Eddy current flaw detection method for copper and copper alloy seamless pipes GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values GB/T 8888 Packaging, marking, transportation, storage and quality certificate of heavy non-ferrous metal processing products GB/T 10567:2 Test method for residual stress of copper and copper alloy processed materials Ammonia fumigation test method GB/T 26303:1 Copper and copper alloy processing materials external dimension testing method - Part 1: Pipe GB/T 34505-2017 Room temperature tensile test method for copper and copper alloy materials YS/T 347 copper and copper alloy average grain size determination method YS/T 482 Analysis method of copper and copper alloy Photoemission spectrometry YS/T 483 Analysis method of copper and copper alloy X-ray fluorescence spectrometry (wavelength dispersion type) YS/T 668 Sampling method for physical and chemical testing of copper and copper alloys Preparation method of YS/T 815 copper and copper alloy mechanical properties and process performance samples

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document:

4 Classification and marking

4:1 Product Classification The grade, code, state, type and specification of the pipe shall comply with the provisions of Table 1: ......

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