GB/T 30828-2014 English PDF

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GB/T 30828-2014: Middle strength steel wire for prestressed concrete
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30828-2014	399	Add to Cart	3 days	Middle strength steel wire for prestressed concrete	Valid

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Basic data

Standard ID: GB/T 30828-2014 (GB/T30828-2014)
Description (Translated English): Middle strength steel wire for prestressed concrete
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H49
Classification of International Standard: 77.140.15
Word Count Estimation: 17,125
Date of Issue: 6/24/2014
Date of Implementation: 4/1/2015
Quoted Standard: GB/T 2103; GB/T 4354; GB/T 21839; GB/T 24238; GB/T 24242.2; GB/T 24242.4; YB/T 081
Adopted Standard: JIS G3538-1994, NEQ
Regulation (derived from): National Standards Bulletin No. 14 of 2014
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 intensity of prestressed concrete steel wire classification, size, shape, weight and tolerance, technical requirements, test methods, inspection rules and packaging, marking and quality certificate. This standard applies to pre

GB/T 30828-2014: Middle strength steel wire for prestressed concrete

---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.
Middle strength steel wire for prestressed concrete ICS 77.140.15 H49 National Standards of People's Republic of China Tensile steel in prestressed concrete Issued on. 2014-06-24 2015-04-01 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 classification code and mark 1 4.1 Category 1 4.2 Code 2 4.3 Example 2 mark 5 order contents 2 6 size, shape, weight and tolerances 2 6.1 nominal diameter and tolerance 2 6.2 weighs 4 6.3 inner diameter of 4 6.4 Delivery Status 5 6.5 weight deviation 5 7 5 Technical requirements 7.1 Designation and chemical composition 5 7.2 Manufacturing Method 5 7.3 Mechanical Properties 5 7.4 Surface quality 7 Straight wire of 7.5 7 Test Method 8 7 7 8.1 Surface Inspection 7 8.2 Dimensions test 8.3 weight per meter measuring 7 8.4 Tensile Test 8 8.5 8 repeated bending test 8 8.6 bending test 8.7 relaxation test 8 8.8 Numerical rounding 8 8 9 inspection rules 9.1 Delivery Inspection 8 9.2 eigenvalue test 9 10 packaging, labeling, quality certificate, transportation and storage 9 9 10.1 Packing 10.2 mark 10 10 10.3 Certificate of Quality 10.4 Transportation and storage 10 Appendix A (normative) eigenvalues \u200b\u200binspection rules 11

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard reference method using redrafted JISG3538-1994 "cold drawn steel wire for prestressed concrete" prepared with JISG3538- 1994 "cold drawn steel wire for prestressed concrete," the non-equivalent. The standard in the appropriate diameter, dimensional tolerances and other aspects of JISG3538 a certain identity; but in terms of specifications, elongation, relaxation rate According to the needs of the construction industry has been adjusted, and increases repeated bending test content. 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. China Metallurgical Construction Research Institute Co., Ltd., Tianjin Yinlong prestressed Materials Co., Ltd., Tianjin Metallurgical set ZTE corporation Shengda Steel Co., Ltd., Metallurgical Industry Information Standards Institute, Rizhao Steel Holding Group Co., Ltd., Liaoning Tongda Building Material Industry Ltd., Liuzhou OVM Machinery Co., Ltd. The main drafters of this standard. Zhu Jianguo, Wang Hongru, Mary, Frank Bridge, Yu Yan, Xie heavy tiger, Yong, Wang Wenxi, Maoai Ju, Lin ol The Wangling Jun, Zhang Baoju, Wangke Feng, Lee Boon Yang, Chiang Tung, Yu Zhi Liang, Chen Jie, Ren Cuiying, a Yin, Yang Guiyu. Tensile steel in prestressed concrete

1 Scope

This standard specifies the intensity of prestressed concrete steel wire classification, size, shape, weight and tolerance, technical requirements, test side Method, inspection rules and packaging, marking and quality certificate. Stabilized heat This standard applies to prestressed concrete members with strength in the range of 650MPa ~ 1370MPa after cold working Li wire.

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 2103 General provisions wire acceptance, packaging, marking and quality certificate GB/T 4354 quality carbon steel hot rod GB/T 21839 Test Method for prestressed concrete steel GB/T 24238 and prestressed steel wire strand with a hot rod GB/T 24242.2 silk non-alloy steel wire rod - Part 2. general purpose wire rod GB/T 24242.4 silk non-alloy steel wire rod - Part 4. Special purpose wire rod YB/T 081 value metallurgical technical standards and testing for rounding value determination principles

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 The strength of the spiral rib steel wire middlestrengthhelicalribwire Hot rods in the drawing process by the rotating spiral mold to form a continuous spiral rib rules along the longitudinal direction of the surface of the wire After the stabilization treatment of cold drawn wire. 3.2 The strength notch wire middlestrengthindentedwire Hot rods after the drawing process, the scoring roll cold rolling along the longitudinal direction of the wire surface uniformly distributed on both sides have regularly spaced, Three, four after the cold stabilization treatment indentation pull wire. 3.3 Deformed filaments changedwire Steel wire spiral rib and scored collectively.

4 classification and labeling code

4.1 Classification 4.1.1 divided by the surface shape of the spiral rib steel wire and wire scoring categories. ......

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