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GB/T 30828-2014Middle strength steel wire for prestressed concrete (English PDF)

预应力混凝土用中强度钢丝

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Recommended

Issue date

June 24, 2014

Implementation date

April 1, 2015

Scope

GB/T 30828-2014 is the English-translated version of 预应力混凝土用中强度钢丝.

GB/T 30828-2014 is the Chinese standard "Middle strength steel wire for prestressed concrete". Its scope clause reads: 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. Its clauses include terms and definitions; classification and labeling code.

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Document preview — GB/T 30828-2014

National Standard of the People's Republic of China

ICS: 77.140.15
Classification: H 49

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 classification code and mark
4.1 Category
4.2 Code
4.3 Example 2 mark
5 order contents
6 size, shape, weight and tolerances
6.1 nominal diameter and tolerance
6.2 weighs
6.3 inner diameter of
6.4 Delivery Status
6.5 weight deviation
7 5 Technical requirements
7.1 Designation and chemical composition
7.2 Manufacturing Method
7.3 Mechanical Properties
7.4 Surface quality
7 8.1 Surface Inspection
7 8.2 Dimensions test
8.3 weight per meter measuring
8.4 Tensile Test
8.5 8 repeated bending test
8.6 bending test
8.7 relaxation test
8.8 Numerical rounding
9 inspection rules
9.1 Delivery Inspection
9.2 eigenvalue test
10 packaging, labeling, quality certificate, transportation and storage
10.1 Packing
10.2 mark
10.3 Certificate of Quality
10.4 Transportation and storage
Appendix A (normative) eigenvalues inspection rules

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

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

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.

GB/T 32963 | GB/T 33026 | GB/T 32795 | GB/T 30830 | GB/T 30827 | GB/T 30826 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.

Referenced standards

Normative references

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