GB/T 32977-2016 in English

VALID

Hot rolled improved corrosion resisting steel sections

Issued on:2016-08-29
Implemented on:2017-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $80.00
$78.00

Standard No:	GB/T 32977-2016
Document status:	VALID
Title in English:	Hot rolled improved corrosion resisting steel sections
Title in Chinese:	改善耐蚀性能热轧型钢
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-08-29
Implemented on:	2017-07-01
ICS Classification:	77.140.70-Steels profiles
Chinese Classification:	H40-Steel and iron products in general
Professional Classification:	GB-National Standard
Related Keywords:	improved corrosion resistance corrosion resistance requirements improved corrosion corrosion resistance corrosion resistance test requirements iii
Related Topics:	improve you improve Flow Cytometry Improves Peak Shape Corrosion resistance steel Improve peak shape Improve verification improve experience Endurance Improving corrosion resistance of hot-rolled section steel improve t hot rolled steel GBT32977 GB/T 32977-2016 Hot rolled steel section latest Ablation resistance performance test

《GB/T 32977-2016改善耐蚀性能热轧型钢》由TC183（全国钢标准化技术委员会）归口，TC183SC8（全国钢标准化技术委员会型钢分会）执行，主管部门为中国钢铁工业协会。

Introduction

In-depth interpretation of GB/T32977-2016 hot-rolled steel with improved corrosion resistance

I. Background of the standard and analysis of technological evolution

With the increasing requirements for corrosion resistance in modern construction and engineering fields, traditional carbon structural steel has been unable to meet the corrosion resistance requirements in complex environments. The GB/T32977-2016 "hot-rolled steel with improved corrosion resistance" standard came into being, aiming to significantly improve the service life of hot-rolled steel in corrosive environments such as moisture and salt spray by optimizing chemical composition design and production process.

1. Background of Standard Formulation

Coping with corrosion challenges under severe climatic conditions
Meeting high standards in marine engineering, bridge construction and other fields
Promoting technological upgrading and product innovation in the steel industry

II. Comparative Analysis of Standard Frameworks

Technical Dimensions	GB/T32977-2016 Requirements	Comparative Standards (such as GB/T700)
Chemical Composition Control	Strictly limit the content of corrosion-resistant elements such as Cr and Ni, Cu≤0.3%	No clear corrosion resistance requirements
Mechanical properties indicators	Consistent with GB/T1591, supplemented with corrosion resistance evaluation methods	Only stipulates conventional tensile, impact and other indicators
Test methods	Add cyclic corrosion test (Appendix A), using salt spray chamber equipment	Does not include corrosion resistance test requirements

III. Standard implementation recommendations and application guidance

1. Material selection recommendations

The selection of hot-rolled steel should take into account the following:

Corrosion level of the engineering environment
Stress conditions of the components
Budget cost

2. Key points of quality control

Suggested manufacturers:

Strictly carry out chemical composition analysis according to Table 1, and give priority to spark source atomic emission spectrometry (GB/T4336).
Strengthen surface quality inspection to ensure that there are no defects such as cracks and bubbles.
Regularly calibrate test equipment, especially the temperature and humidity control accuracy of the salt spray box.

3. Precautions for construction

Construction units should:

Carry out sampling inspection according to standard requirements
Do a good job in anti-corrosion treatment of the construction environment
Clean up surface defects in time to avoid secondary corrosion

Conclusion

The implementation of GB/T32977-2016 will promote the development of my country's hot-rolled steel industry towards high performance and long life, and provide strong material guarantee for marine engineering, bridge construction and other fields.

More samples: NB/T 47013.2-2015 JGJ 94-2008 DL/T 5154-2012

Sample only — not a preview of GB/T 32977-2016