GB/T 2550-2025 English PDFUS$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 2550-2025: Gas welding equipment - Rubber hoses for welding, cutting and allied processes Status: Valid GB/T 2550: Historical versions
Basic dataStandard ID: GB/T 2550-2025 (GB/T2550-2025)Description (Translated English): Gas welding equipment - Rubber hoses for welding, cutting and allied processes Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G42 Classification of International Standard: 25.160.30; 83.140.40 Word Count Estimation: 18,119 Date of Issue: 2025-08-29 Date of Implementation: 2026-03-01 Older Standard (superseded by this standard): GB/T 2550-2016 Issuing agency(ies): State Administration for Market Regulation, National Standardization Administration GB/T 2550-2025: Gas welding equipment - Rubber hoses for welding, cutting and allied processes---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT2550-2025ICS 25.160.30.83.140.40 CCSG42 National Standard of the People's Republic of China Replaces GB/T 2550-2016 Gas welding equipment for welding, cutting and similar work rubber hose Implementation on March 1, 2026 State Administration for Market Regulation The National Standardization Administration issued PrefaceThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 2550-2016 "Rubber hoses for welding, cutting and similar operations with gas welding equipment". Compared with.2016, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The definition of flux gas hose has been changed (see 3.3, 3.3 of the.2016 edition); b) Added the requirements for outside diameter (see 8.2); c) Increased wall thickness requirements (see 8.3); d) The concentricity requirements have been changed (see 8.4, 8.2 of the.2016 edition); e) The test method for room temperature flexibility test has been changed (see 9.2.5, 9.2.5 of the.2016 edition); f) The test method for low-temperature flexibility test has been changed (see 9.2.6, 9.2.6 of the.2016 edition); g) Added the color identification of helium (see 10.1); h) Changed the hose outer covering marking content from "nominal inside diameter" to "d) combination of basic specifications of inside and outside diameter" (see 10.2, 10.3 in the.2016 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee on Rubber and Rubber Products of Standardization (SAC/TC35). This document was drafted by. Penglai Linge Rubber and Plastic Products Co., Ltd., Shandong Yuelong Rubber and Plastic Technology Co., Ltd., Zhejiang Sanfu Technology Co., Ltd., Luohe Litong Hydraulic Technology Co., Ltd., Hebei Jiuxing Rubber and Plastic Products Co., Ltd., Hebei Runte New Materials Technology Group Co., Ltd. Co., Ltd., Shenyang Rubber Research and Design Institute Co., Ltd. The main drafters of this document are. Li Liang, Guo Xu, Li Zhewang, Liu Suiqiang, Wu Binglan, Wu Guoyun, Chi Yingxun, Liu Mingqi, Wu Peiyuan, Li Dongwei, Yang Peng and Bai Chunxian. The previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 2550-1981 in 1981, first revised in.1992, second revised in.2007, third revised in.2016 revision; ---This is the fourth revision. Gas welding equipment for welding, cutting and similar work rubber hose1 ScopeThis document specifies requirements for rubber hoses (including parallel hoses) intended for welding, cutting and similar operations. This document specifies the 2.0MPa conventional type and (limited to a maximum working pressure of 1.0MPa and an inner diameter less than or equal to 6.3mm) light Requirements for rubber hoses and acetylene hoses (maximum working pressure is 0.3MPa). This document applies to hoses with an operating temperature of -20°C to 60°C and the following uses. ---Gas welding and cutting; --- Arc welding under inert or active gas protection; --- Operations similar to welding and cutting, especially heating, brazing and metal spraying. This document is not applicable to thermoplastic hoses nor to high pressure ( >0.3 MPa) acetylene hoses.2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 528 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber GB/T 1690 Test method for resistance of vulcanized rubber or thermoplastic rubber to liquids GB/T 2941 Rubber physical test methods - General procedures for specimen preparation and conditioning GB/T 3512 Vulcanized rubber or thermoplastic rubber - Hot air accelerated aging and heat resistance tests GB/T 5563 Rubber and plastic hoses and hose assemblies - Test methods for hydrostatic pressure GB/T 5565.1 Rubber and plastic hoses and non-reinforced hoses - Measurement of flexibility and stiffness - Part 1.Room temperature bending test GB/T 5565.2-2017 Rubber and plastic hoses and non-reinforced hoses - Measurement of flexibility and stiffness - Part 2.Below room temperature bending test GB/T 7528 Terminology of rubber and plastic hoses and hose assemblies GB/T 9573 Rubber and plastic hoses and hose assemblies - Methods for measuring hose dimensions and hose assembly lengths GB/T 9575 Rubber and plastic hoses - Specifications and tolerances for maximum and minimum inside diameters and cut lengths GB/T 14905-2020 Rubber and plastic hoses - Determination of interlayer bond strength GB/T 18422 Rubber and plastic hoses and hose assemblies - Determination of air permeability GB/T 24134-2009 Evaluation of ozone resistance of rubber and plastic hoses under static conditions ISO 11114-3 Gas cylinders — Compatibility of cylinder and valve materials with the gases contained — Part 3.Non-metallic materials for oxygen atmospheres3 Terms and DefinitionsFor the purposes of this document, the terms and definitions given in GB/T 7528 and ISO 15296 and the following apply. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 2550-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 2550-2025_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 2550-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2550-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
