GB/T 18033-2017 English PDFUS$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 18033-2017: Seamless copper tubes for water and gas Status: Valid GB/T 18033: Historical versions
Basic dataStandard ID: GB/T 18033-2017 (GB/T18033-2017)Description (Translated English): Seamless copper tubes for water and gas Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H62 Classification of International Standard: 77.150.30 Word Count Estimation: 12,134 Date of Issue: 2017-07-12 Date of Implementation: 2018-04-01 Older Standard (superseded by this standard): GB/T 18033-2007 Quoted Standard: GB/T 228.1-2010; GB/T 241; GB/T 242; GB/T 244; GB/T 246; GB/T 2828.1; GB/T 4340.1; GB/T 5231; GB/T 5248; GB/T 8888; GB/T 26303.1; YS/T 349; YS/T 482; YS/T 668; YS/T 815; GB/T 5121.1; GB/T 5121.2; GB/T 5121.3; GB/T 5121.4; GB/T 5121.5; GB/T 5121.6; GB/T 51 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality certificates and orders (or contracts) of seamless copper pipes and copper pipes (hereinafter referred to as tubing). This standard applies to seamless copper pipes and copper pipes. Brass is generally used welding, flaring or crimping, etc. connected with the pipe. GB/T 18033-2017: Seamless copper tubes for water and gas---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 tubes for water and gas ICS 77.150.30 H62 National Standards of People's Republic of China Replace GB/T 18033-2007 Seamless copper water pipe and copper gas pipe Released on.2017-07-12 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration issued ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 18033-2007 "Seamless Copper Water Pipe and Copper Air Pipe". This standard is compared with the GB/T 18033-2007 standard. The main changes are as follows. --- Added TU1, TU3 and TP1 grades; --- Added light softening annealing state and pulling state, and revised the representation of the state code; --- "Nominal size" was changed to "nominal diameter"; --- Increased the roundness of the pipe; ---The average outer diameter tolerance is increased by a high precision level; --- Increased wall thickness tolerance requirements, wall thickness greater than 3.5mm pipe allowable deviation from the.2007 version of the nominal wall thickness 15% changed to 12%; --- Revised the regulations on the grain size of annealed pipes; --- Revised the relevant regulations on flare (squashing); ---Mechanical properties sample number was changed from "S01, S02" in.2007 edition to "S1, S2"; --- Added regulations on mechanical properties sampling and sample preparation. This standard was proposed by the China Nonferrous Metals Industry Association. This standard is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243). This standard was drafted. Jiangsu Baoluo Copper Group Co., Ltd., Zhejiang Hailiang Co., Ltd., Zhejiang Nile Copper Co., Ltd. Division, Qingdao Hongtai Copper Co., Ltd., Shandong Hengyuan Copper Co., Ltd., Shangyu Jinying Copper Co., Ltd., Changshu Zhongjia New Materials Co., Ltd. Division, Jinlong Precision Copper Tube Group Co., Ltd. The main drafters of this standard. Wang Yanjie, Zhang Kong, Zhang Wei, Wang Xiuqin, Chen Zhongying, Zhao Xuelong, Feng Zhiye, Wei Lianyun, Liu Jinlong, Luo Qiliang, Li Fupeng, Yang Shuhu, Yan Zhifu, Li Renwei, Sun Lijin, Liang Xingqiang, Zhao Qinhai, Peng Yongcong, Li Jianping, Wang Xiangdong. The previous versions of the standards replaced by this standard are. ---GB/T 18033-2000, GB/T 18033-2007. Seamless copper water pipe and copper gas pipe1 ScopeThis standard specifies the requirements, test methods, inspection rules and signs, packaging and transportation of seamless copper water pipes and copper gas pipes (hereinafter referred to as pipes). Input, storage, quality certificate and order form (or contract) content. This standard applies to seamless copper water pipes and copper gas pipes. The copper pipe is generally connected to the pipe by welding, flaring or crimping.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 228.1-2010 tensile testing of metallic materials - Part 1 GB/T 241 metal pipe hydraulic test method GB/T 242 metal tube flare test method GB/T 244 metal tube bending test method GB/T 246 metal tube flattening test method GB/T 2828.1. Sampling procedures for sampling by sampling - Part 1 . Batch-to-batch sampling plan, searched by AQL GB/T 4340.1 Test methods for Vickers hardness of metallic materials - Part 1 GB/T 5121 (all parts) Copper and copper alloy chemical analysis methods GB/T 5231 processing copper and copper alloy grades and chemical composition GB/T 5248 copper and copper alloy seamless tube eddy current testing method GB/T 8888 heavy non-ferrous metal processing products packaging, marking, transportation and storage and quality certificate GB/T 26303.1 Determination of dimensions of copper and copper alloys - Part 1 YS/T 347 Method for determination of average grain size of copper and copper alloys YS/T 482 Copper and copper alloys - Methods YS/T 668 copper and copper alloy physical and chemical detection sampling method YS/T 815 copper and copper alloy mechanical properties and process properties sample preparation method3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Nominal diameter The general diameter between various pipes and fittings, which is the diameter expressed as an integer value close to the actual inner diameter of the pipe. Pipe and fitting mouth The paths are consistent so that they can be connected to each other. Note. The nominal diameter is usually expressed by DN, followed by the nominal diameter of the nominal diameter in mm.4 requirements4.1 Product Classification 4.1.1 Grade, status, specifications The grade, condition and specifications of the pipe shall comply with the requirements of Table 1. Table 1 Grades, status and specifications 4.1.2 Tag example Product marks are expressed in the order of product name, standard number, grade (or code), status, and specifications. Examples of tags are as follows. Example 1. Manufactured by TP2 (C12200), the supply state is pull (hard) state (H80), outer diameter is 108mm, wall thickness is 1.5mm, length is 5800mm The round copper tube is marked as. Copper tube GB/T 18033-TP2H80-Ф108×1.5×5800 Or copper tube GB/T 18033-C12200H80-Ф108×1.5×5800 Example 2. A round copper coil manufactured by TU2 (T10180) with a softened annealed O60, an outer diameter of 22 mm and a wall thickness of 0.8 mm is marked as. Copper coil GB/T 18033-TU2O60-Ф22×0.9 Or copper coil GB/T 18033-T10180O60-Ф22×0.9 4.2 Chemical composition The chemical composition of the pipe shall comply with the corresponding grades in GB/T 5231. 4.3 Dimensions and their allowable deviation 4.3.1 The dimensions and allowable deviation of the pipe shall comply with the requirements of Table 2. 4.3.2 The allowable deviation of the length of the straight pipe is ±10mm, and the allowable deviation of the length of the coil is 300mm. Straight pipe length is fixed length, double For the length of the ruler, the amount of sawing when sawing the segment should be added, and each sawing amount is 5 mm. 4.3.3 The straightness of the straight (hard) (H80) and light pull (H55) or pull (H58) straight pipes with an outer diameter not greater than Ф108mm shall comply with Table 3. The stipulation that the outer diameter is greater than the straightness of the Ф108mm pipe is determined by the supplier and the buyer. Table 3 The straightness unit of the pipe is mm Length straightness, no more than ≤6000 Any 3000mm does not exceed 12 4.3.4 The end of the straight pipe shall be sawed and leveled, and the incision shall not exceed the requirements of Table 4 without causing the pipe length to exceed the allowable deviation. The slope of the cut. Table 4 The inclination of the end of the pipe is in millimeters Nominal outer diameter ≤16 0.40 >16 2.5% of outer diameter 4.3.5 The roundness of the drawn straight pipe without annealing shall comply with the requirements of Table 5. Table 5 Tube Roundness (wall thickness/nominal outer diameter) ratio roundness/mm 0.01~0.03 nominal outer diameter 1.5% >0.03~0.05 1.0% of nominal outer diameter >0.05~0.1 0.8% of nominal outer diameter >0.1 0.7% of nominal outer diameter 4.4 Mechanical properties The longitudinal mechanical properties of the pipe at room temperature are to comply with the requirements of Table 6. Table 6 Mechanical properties of pipes Note. Vickers hardness is for selective testing only. 4.5 Grain size The average grain size of soft-annealed (O60) tubing should be 0.020mm~0.045mm, and the average grain size of light annealed (O50) tubing should be It is 0.015mm~0.035mm. 4.6 Process performance 4.6.1 Flaring (squashing) test Softening annealing (O60), light annealing (O50), pull (H58), and light pull (H55) pipes with an outer diameter of not more than 18 mm for flaring test Inspection time, the top cone is 45 °, the expansion rate is 40%; the outer diameter is greater than 18 mm soft annealing (O60), light annealing (O50), pull (H58), light pull When the (H55) state pipe was subjected to the flare test, the top cone was 45° and the flare ratio was 30%. The flattening test can be used instead of the flaring test, and the flattened pipe can be used. The inner wall spacing is equal to 3 times the wall thickness. After the flaring (squashing) test, the pipe shall not show cracks or breakage visible to the naked eye. 4.6.2 Bending test For a drawn (hard) (H80) tube with an outer diameter of not more than 28 mm, the bending test shall be carried out according to the bending radius specified in Table 7. The bending angle is 90°, bent with a special tool. After the test, the pipe should have no defects such as cracks or breakage visible to the naked eye. Table 7 Bending radius of the bending test is in millimeters 4.7 Non-destructive testing Each pipe shall meet the requirements of hydrostatic test or air pressure test or eddy current test (one of three choices). a) Hydraulic test The maximum working pressure of the pipe is calculated according to formula (1). The maximum working pressure that the pipe can withstand is shown in Table 2. When the pipe is subjected to hydrostatic test, the test pressure is calculated according to formula (2). Under the working pressure, after 10 s to 15 s, the pipe should be No leakage and permanent deformation. b) air pressure test When the pipe is subjected to air pressure test, the air pressure is 0.4 MPa, the pipe is completely immersed in water for at least 10 s, and the pipe should be free of air bubbles. appear. c) Eddy current testing When the wall thickness of the pipe is ≤3mm, the eddy current testing shall be carried out. The artificial standard defects (drilling diameter) and the flaw detection results shall be consistent. GB/T 5248 provisions. 4.8 Surface quality The inner and outer surfaces of the pipe should be smooth and clean, and should not have harmful defects affecting the use. The inner surface should not have a carbon film.5 Test methods5.1 Chemical composition The chemical composition analysis method of the pipe is carried out according to the provisions of GB/T 5121 (all parts) or YS/T 482, and the chemical composition of the pipe is The analysis is carried out in accordance with the provisions of GB/T 5121 (all parts). 5.2 Dimensions The measuring method of the outer dimensions of the pipe is carried out in accordance with the provisions of GB/T 26303.1. 5.3 Mechanical properties The tensile test method of the pipe is carried out according to the provisions of GB/T 228.1-2010. The Vickers hardness of the pipe is in accordance with the provisions of GB/T 4340.1. get on. Tensile specimens shall comply with the provisions of Appendix E of GB/T 228.1-2010, and their shape and size shall be selected according to the following provisions. a) If the outer diameter is not more than 30mm, cut the full-section pipe section from the pipe and select the sample No. S7; b) If the outer diameter is larger than 30mm, longitudinal longitudinal specimens may be taken, and samples S1 and S2 may be selected. 5.4 Grain size The grain size of the pipe is carried out in accordance with the provisions of YS/T 347. 5.5 Process performance 5.5.1 The flaring test of the pipe shall be carried out in accordance with the provisions of GB/T 242. 5.5.2 The flattening test of the pipe shall be carried out in accordance with the provisions of GB/T 246. 5.5.3 The bending test of the pipe is carried out in accordance with the provisions of GB/T 244. 5.6 Non-destructive testing 5.6.1 Hydraulic test The hydraulic test of the pipe is carried out in accordance with the provisions of GB/T 241. 5.6.2 Air pressure test The air pressure test of the pipe should be kept connected to the air source with pressure to keep the air with a certain pressure in the pipe. Complete the pipe Immerse in water and check for air bubbles from the tubing. 5.6.3 Eddy current testing The eddy current testing method for pipes is carried out in accordance with the provisions of GB/T 5248. 5.7 Surface quality The method for detecting the carbon film on the inner surface of the pipe shall be carried out in accordance with the provisions of Appendix A. The other surface quality of the pipe is checked visually.6 Inspection rules6.1 Inspection and acceptance 6.1.1 Pipes shall be inspected by the technical supervision department to ensure that the product quality meets the requirements of this standard and fill in the quality certificate. 6.1.2 The purchaser shall re-examine the products received in accordance with the provisions of this standard. The results of the re-inspection shall not be in accordance with the provisions of this standard and the order form (or contract). When signing, it shall be submitted to the supplier in writing and resolved by negotiation between the supplier and the buyer. Objections that are subject to surface quality and dimensional deviation should be received Presented within one month from the date of the product. If arbitration is required, the arbitration sampling shall be carried out jointly by the supplier and the buyer. 6.2 Batch Pipes shall be submitted for acceptance in batches. Each batch shall consist of the same grade, state and specifications, and the weight of each batch shall not exceed 5000kg. 6.3 Inspection items 6.3.1 The chemical composition, dimensions and tolerances, mechanical properties, process properties, non-destructive tests, grain size of each batch of tubing shall be carried out. And inspection of surface quality. 6.3.2 When required, the Vickers hardness and carbon film shall be tested. 6.4 Sampling Pipe sampling shall comply with the requirements of Table 8. The sampling method shall be carried out in accordance with the provisions of YS/T 668. The mechanical properties and process properties shall be prepared according to the sample. The YS/T 815 regulations are carried out. Table 8 sampling The number of the test number of the test method required by the sampling requirements of the inspection project The chemical supplier shall take one sample per furnace; the demand side shall take one sample per batch. 4.2 5.1 Dimensions According to the sampling plan specified in GB/T 2828.1, select one sampling for normal inspection. Case, detection level II, reception quality limit AQL=2.5, or both parties According to the sampling plan specified in GB/T 2828.1, select one sampling for normal inspection. Case, detection level II, reception quality limit AQL=2.5, or both parties 4.8 5.7 6.5 Determination of test results 6.5.1 If the chemical composition is unqualified, the batch of pipe is judged to be unqualified. 6.5.2 If the outer dimensions and surface quality of the pipe (except the carbon film) are unqualified, the root shall not be qualified. The number of unqualified parts in each batch exceeds the receiving quality When the quantity limit is determined, the whole batch is unqualified, or the supplier is inspected one by one, and the qualified one delivers. 6.5.3 When the test results of mechanical properties, process properties, grain size, carbon film test, etc. are unqualified, double samples shall be taken from the batch of products. Repeat the test for this unqualified item. If the repeated test results are all qualified, the whole criticism is qualified; if there is still a sample in the repeated test If it is unqualified, it will be criticized as unqualified, or it will be tested by the supplier one by one, and the qualified person will deliver it. 6.5.4 If the non-destructive test fails, the individual pipe is judged to be unqualified. 7 Identification, packaging, transportation, storage and quality certificates 7.1 Identification 7.1.1 Classification The pipes that have passed the inspection shall be marked one by one on the outer surface of each pipe, and the marks shall be divided into. permanent marks or durability marks. 7.1.2 Permanent identification Each copper pipe shall have a permanent mark within a 0.6m spacing. The height of the letter shall comply with the requirements of Table 9. The contents include. a) the manufacturer's name or trademark; b) brand, status, specifications; c) wall thickness type (A, B, C); d) standard code; e) the export country should indicate the name of the country of origin; f) Date of manufacture. year, month (×× weeks); g) Other marks. Table 9 Copper tube outer diameter and font height recommended table unit is mm OD word height OD word height 6~10 2 >100~159 6.5 >10~25 3.5 >159~219 7.0 >28~54 4.5 >219~325 8.0 >54~108 5.5 7.1.3 Durability marking The durability logo is as follows. a) Each straight pipe shall be marked with the same color only for the length of the length of the pipe and shall be printed repeatedly at intervals of 1.0 m. See 7.1.2 for text content and height. b) Color regulations. Copper water pipes. type A --- green; type B --- blue; C type --- red. Copper gas pipe. yellow. 7.2 Packaging, transportation, storage and quality certificate The packaging, transportation, storage and quality certificate of the pipe shall be carried out in accordance with the provisions of GB/T 8888. 8 Order (or contract) content The order form (or contract) for ordering the materials listed in this standard shall include the following. a) product name; b) the brand number; c) status; d) specifications; e) size and tolerance, accuracy level; f) the weight or the number of roots (discs); g) non-destructive testing options (three in one); h) Vickers hardness, carbon film detection (when required); i) the standard number; j) Other.Appendix A(normative appendix) Qualitative detection method for carbon film on inner surface of copper tube A.1 Scope This appendix specifies the qualitative detection method for the carbon film on the inner surface of copper tubes. This appendix applies to the detection of carbon film on the inner surface of copper tubes. A.2 Method summary The copper tube sample was treated with a 25% aqueous solution of nitric acid at room temperature, and the inner surface of the copper tube was determined by observing whether or not a film-like substance was formed on the surface of the acid liquid. Whether there is a carbon film on the surface. A.3 sample Take a sample tube with a length of not less than 25 mm. A.4 Test procedure A.4.1 Preparation of samples The outer surface of the pipe sample used for the test shall be cleaned, and the wear marks caused by the metal chips shall remove or eliminate all traces of the surface of the original pipe. Chemically, one end of the nozzle can be plugged with an acid-resistant stopper, immersed in a nitric acid solution, then washed with deionized water and dried. The sample tube is cut into two test pieces in the longitudinal direction with a clean saw blade, and the test piece should have a surface size larger than 22 mm × 1 mm, and The sample block was degreased with acetone. A.4.2 Treatment of samples Place the degreased sample block into a small flat bottom porcelain plate or glass plate with the inner surface of the sample facing up and add at room temperature. 25% (volume fraction) of......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 18033-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 18033-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 18033-2017_English with my colleagues?Answer: Yes. 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