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GB/T 31943-2015: Continuously cold rolled steel strips for precision welded tubes
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 31943-2015 | English | 149 |
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Continuously cold rolled steel strips for precision welded tubes
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GB/T 31943-2015
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Basic data | Standard ID | GB/T 31943-2015 (GB/T31943-2015) | | Description (Translated English) | Continuously cold rolled steel strips for precision welded tubes | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H46 | | Classification of International Standard | 77.140.50 | | Word Count Estimation | 7,767 | | Date of Issue | 2015-09-11 | | Date of Implementation | 2016-06-01 | | Quoted Standard | GB/T 222; GB/T 223.9; GB/T 223.59; GB/T 223.63; GB/T 223.64; GB/T 228.1-2010; GB/T 247; GB/T 708; GB/T 2523; GB/T 2975; GB/T 4336; GB/T 8170; GB/T 17505; GB/T 20066; GB/T 20123; GB/T 20125; GB/T 20126 | | Regulation (derived from) | National Standard Announcement 2015 No.25 | | 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 precision welded steel tubes cold rolling steel grades and purposes, ordering the content, size, shape, weight and tolerance, technical requirements, test methods, inspection rules, packaging, marking and quality certification. This Standard applies to a thickness of 0.25 mm ~ 1.30 mm cold rolling steel, mainly used in refrigeration, automobiles, electric appliances and other industries in the condenser, evaporator, fuel, lubricating oil, electric tube, pipe and other single cooler and double precision welded steel pipe. | GB/T 31943-2015: Continuously cold rolled steel strips for precision welded tubes---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.
(Precision welded steel tubes with cold rolling strip)
ICS 77.140.50
H46
National Standards of People's Republic of China
Precision welded steel tubes cold rolling strip
Issued on. 2015-09-11
2016-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Iron and Steel Association.
This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized.
This standard is mainly drafted by. Baoshan Iron & Steel Co., Jing large (Jingzhou) Auto Parts Co., Metallurgical Industry Information Standards
Research Institute, Wuhan Iron and Steel Co., Ltd., Hebei Jinxi Iron and Steel Group Co., Ltd.
The main drafters of this standard. Li Yuguang, Han Yu, Wang Jianguo, Zhang Weixu, Chen Xiaohong, Zhao Yichen, Yuan Yang, Zhang Huaping, painted woods, Sun Zhongming.
Precision welded steel tubes cold rolling strip
1 Scope
This standard specifies the precision welded steel tubes cold rolling steel grades and purposes, ordering the content, size, shape, weight and tolerances,
Technical requirements, test methods, inspection rules, packaging, marking and quality certification.
This standard applies to the thickness of 0.25mm ~ 1.30mm cold rolling steel, mainly used in refrigeration, automotive, electric appliances and other industries
Condenser, evaporator, fuel, lubricating oil pipes, electric pipes, coolers and other single and double precision tubes welded steel pipe.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 222 chemical composition of finished steel tolerance
GB/T 223.9 steel and aluminum alloys - Determination of chromium content Azure S Spectrophotometry
GB/T 223.59 Steel and Alloy Determination of phosphorus content by bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometry
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy The sodium (potassium) for Determination of amount
GB/T 223.64 steel and alloy manganese content - Flame Atomic Absorption Spectrometry
RT Test Method. Test Part 1 GB/T 228.1-2010 metal material tensile
General provisions GB/T 247 steel sheet and strip packaging, marking and quality certificate
Size GB/T 708 cold rolled steel sheet and strip, shape, weight and tolerance
GB/T 2523 cold-rolled steel sheet metal (strip) method for measuring surface roughness and peak number of
GB/T 2975 Steel and steel products for mechanical testing and sample preparation position
GB/T 4336 carbon steel and low alloy steel spark source atomic emission spectrometry method (conventional method)
GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment
GB/T 17505 Steel and steel products General technical delivery requirements
GB/T 20066 Steel and iron - Sampling and determination of the chemical composition of the sample with a sample preparation method
GB/T 20123 Steel - Determination of total carbon and sulfur content of the high-frequency induction furnace combustion infrared absorption method (conventional method)
Inductively coupled plasma atomic GB/T 20125 low-alloy steel multi-element content Emission Spectrometry
Determination of GB/T 20126 non-alloy steel of low carbon content - Part 2. After the induction furnace (preheated) within the combustion infrared absorption method
Grades 3 and uses
3.1 grades representation
Welded steel grades by the first letter of the representative sequence number and composition. Where 1 single, 2 for a double.
Example. HG1 wherein.
HG --- "pipe" Pinyin initials;
1 --- single pipe with a strip.
3.2 Purpose
Strip By Application Table 1.
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