GB/T 31314-2014 English PDF

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GB/T 31314-2014: Multi wires large diameter strand with high-strength and low-relaxation strand for prestressing
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31314-2014	299	Add to Cart	3 days	Multi wires large diameter strand with high-strength and low-relaxation strand for prestressing	Valid

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Basic data

Standard ID: GB/T 31314-2014 (GB/T31314-2014)
Description (Translated English): Multi wires large diameter strand with high-strength and low-relaxation strand for prestressing
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H49
Classification of International Standard: 77.140.65
Word Count Estimation: 13,143
Date of Issue: 12/5/2014
Date of Implementation: 9/1/2015
Quoted Standard: GB/T 21839; GB/T 24238; YB/T 081
Regulation (derived from): Announcement of Newly Approved National Standards 2014 No. 27
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 a diameter of 17. 8mm ~ 28. 6mm multifilament large diameter high-strength low-relaxation prestressing strand of terms and definitions, code and markup, ordering the content, size, shape, weight and tolerances, heavy plate, disc di

GB/T 31314-2014: Multi wires large diameter strand with high-strength and low-relaxation strand for prestressing

---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.
Multi wires large diameter strand with high-strength and loe-relaxation strand for prestressing ICS 77.140.65 H49 National Standards of People's Republic of China Multifilament large diameter high strength Low relaxation prestressing strand Issued on. 2014-12-05 2015-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 code and mark 2 5 order contents 2 6 size, shape, weight and tolerances 2 7 3 Technical requirements Test Method 8 5 9 6 Inspection Rules 10 packaging, marking and quality certificate 8 Reference 9

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 was drafted. Guizhou Wire Rope Co., Ltd., Tianjin Metallurgical Group Zhongxing Shengda Steel Co., Ltd., Tianjin Iron and Steel Group has Ltd., Tianjin Takhar prestressing strand Ltd., Guangdong Jian Yi Jia Metal Products Co., Ltd., Metallurgical Industry Information Standards Institute. The main drafters of this standard. Huang Dajiang, before Zhang, Li Lun friends, Wang Wenxi, Lin ol The Maoai Ju, Zhang Yuesheng, Rencui Ying, Wu Bo, Sun Guoqing, I still Jing, Li Min, Wang Lingjun, Liu Lijun. Multifilament large diameter high strength Low relaxation prestressing strand

1 Scope

This standard specifies the 1 × 19 class, 17.8mm ~ 28.6mm multifilament large diameter high-strength low-relaxation prestressing strand diameter of surgery Terms and definitions, code and markup, ordering the content, size, shape, weight and tolerances, heavy plate, disc diameter, technical requirements, test methods, inspection regulations Then, packaging, marking and quality certificate. This standard applies to bridges, high-rise buildings, large venues, rock anchoring, anchoring applications in the field of roadway multifilament large diameter high-strength low loose Relaxation prestressing strand (hereinafter referred to as "strand").

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 21839 Test Method for prestressed concrete steel GB/T 24238 and prestressed steel wire strand with a hot rod Determining rounding and detection values \u200b\u200bYB/T 081 standard metallurgical technical value

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Multi-wire prestressing strand multiwiresstrandforprestressing Strand made 19 cold-drawn steel wire twisted into a circle of light. 3.2 Or West prestressed strand sealestrandforprestressing Composed of two identical light the number of cold-drawn round wire parallel strand twisted steel. 3.3 Wallin swallow prestressed strand marringtonstrandforprestressing Twisted strand made of inner and outer circle of light cold-drawn steel wire parallel. The thickness of the outer layer of the two diameters of the wires are arranged alternately composition, and an outer Layer filaments total root number is twice the number of inner wires. 3.4 Strand nominal diameter nominaldiameterofstrand Strand circumscribed circle diameter nominal size. 3.5 Stabilization treatment stabilizingtreatment To reduce the use of stress relaxation, strand under a certain tension in the short-term heat treatment. ......

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