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GB/T 45779-2025 English PDF

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US$1489.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45779-2025: Welded shaped steel tubes for structure
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45779-2025	1489	Add to Cart	8 days	Welded shaped steel tubes for structure	Valid

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Basic data

Standard ID: GB/T 45779-2025 (GB/T45779-2025)
Description (Translated English): Welded shaped steel tubes for structure
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H48
Classification of International Standard: 77.140.75
Word Count Estimation: 74,779
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45779-2025: Welded shaped steel tubes for structure

---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/GBT45779-2025
ICS 77.140.75 CCSH48 National Standard of the People's Republic of China Welded special-shaped steel pipes for structures Released on June 30, 2025 Implementation on January 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Classification and Code 2 5 Order Content 3 6 Manufacturing Process 3 7 Technical Requirements 5 8 Test methods 21 9 Inspection Rules 22 10 Marking, packaging, storage and quality certificate 23 Appendix A (Normative) Cross-sectional shape, size specifications and cross-sectional properties of steel pipes 24 Appendix B (Normative) Steel Pipe Flattening Test Method 60 Appendix C (Normative) Determination of Weight of Zinc Coating - Antimony Chloride Method 62 Appendix D (Normative) Uniformity Test of Galvanized Coating - Copper Sulfate Immersion Method 64 Appendix E (Informative) Calculation of Sectional Properties Formula 65 Preface This 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. 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 Iron and Steel Association. This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC183). This document was drafted by. Zhejiang Dewei Stainless Steel Pipe Co., Ltd., Tianjin Youfa Dezhong Steel Pipe Co., Ltd., Zhejiang Jinzhou Pipe Dao Technology Co., Ltd., Handan Zhengda Pipe Group Co., Ltd., Fujian Qingtuo Special Steel Technology Research Co., Ltd., Guangdong Zhenxiong Steel Pipe Co., Ltd., Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd., and Metallurgical Industry Information Standards Research Institute. The main drafters of this document are. Xie Yi, Ding Xiuchen, Yang Weifang, Zhang Hongshun, Jiang Laizhu, Wang Fang, Huang Yalian, Li Qi, Mo Peiming, Zhao Fuliang, Zhong Xuequan, Wang Yuanzhi, Ren Yong, Chen Yao, Shen Chenxia, Chen Zisen, Guo Yong, and Xue Jianzhong. Welded special-shaped steel pipes for structures 1 Scope This document specifies the classification and code, ordering content, manufacturing process, technical requirements, test methods, inspection Regulations, marking, packaging, storage and quality certificates. This document is applicable to welded special-shaped steel pipes (with (hereinafter referred to as "steel pipe"). 2 Normative references The 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 222 Permissible deviations of chemical composition of finished steel products GB/T 223.9 Iron, steel and alloys—Determination of aluminum content—Chrome azurol S spectrophotometric method GB/T 223.11 Determination of chromium content in steel and alloys - Visual titration or potentiometric titration method GB/T 223.12 Methods for chemical analysis of iron, steel and alloys - Sodium carbonate separation-diphenylcarbazide photometric method for the determination of chromium content GB/T 223.14 Chemical analysis of iron, steel and alloys - Tantalum extraction spectrophotometric method for the determination of vanadium content GB/T 223.18 Methods for chemical analysis of iron, steel and alloys - Sodium thiosulfate separation-iodine titration method for the determination of copper content GB/T 223.19 Methods for chemical analysis of iron, steel and alloys - Determination of copper content by the new cuproline-chloroform extraction spectrophotometric method GB/T 223.23 Iron, steel and alloys - Determination of nickel content - Dimethylglyoxime spectrophotometric method GB/T 223.25 Methods for chemical analysis of iron, steel and alloys - Dimethylglyoxime gravimetric method for the determination of nickel content GB/T 223.26 Iron, steel and alloys—Determination of molybdenum content—Thiocyanate spectrophotometric method GB/T 223.28 Methods for chemical analysis of iron, steel and alloys - α-Benzoin oxime gravimetric method for the determination of molybdenum content GB/T 223.36 Methods for chemical analysis of iron, steel and alloys - Separation by distillation - Neutralization titration method for the determination of nitrogen content GB/T 223.37 Iron, steel and alloys - Determination of nitrogen content - Indigo blue spectrophotometric method using distillation separation GB/T 223.40 Iron, steel and alloys - Determination of niobium content - Chlorosulfonylphenol S spectrophotometric method GB/T 223.53 Chemical analysis of iron, steel and alloys - Flame atomic absorption spectrophotometric method for the determination of copper content GB/T 223.58 Methods for chemical analysis of iron, steel and alloys - Sodium arsenite-sodium nitrite titration method for the determination of manganese content GB/T 223.59 Iron, steel and alloys - Determination of phosphorus content - Bismuth phosphomolybdenum blue spectrophotometric method and antimony phosphomolybdenum blue spectrophotometric method GB/T 223.60 Iron, steel and alloys - Determination of silicon content - Gravimetric method GB/T 223.62 Methods for chemical analysis of iron, steel and alloys - Determination of phosphorus content - Spectrophotometric method with butyl acetate extraction GB/T 223.63 Iron, steel and alloys—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method GB/T 223.64 Iron, steel and alloys - Determination of manganese content - Flame atomic absorption spectrometry GB/T 223.72 Iron, steel and alloys - Determination of sulfur content - Gravimetric method GB/T 223.81 Iron, steel and alloy - Determination of total aluminum and total boron content - Microwave digestion-inductively coupled plasma mass spectrometry GB/T 223.84 Iron, steel and alloys - Determination of titanium content - Diantipyryl methane spectrophotometric method GB/T 223.85 Iron, steel and alloys - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace GB/T 223.86 Iron, steel and alloys - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45779-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45779-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45779-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45779-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.