GB/T 43151-2023High-strength bolt assemblies for steel structures of weathering steel (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document stipulates the thread specifications for M12~M36, performance grades NH8.8S/NH8H and NH10.9S/NH10H steel structures.

Types and dimensions, technical requirements, test methods, acceptance inspection, marking, quality certification documents, packaging, and transportation of weathering steel high-strength bolt connection pairs and storage.

This document applies to weathering steel high-strength bolt connection pairs for steel structures (hereinafter referred to as "connection pairs").

Note: When tested at an ambient temperature of 10°C to 35°C, weather-resistant steel high-strength bolt connection pairs for steel structures that meet the requirements of this document will be used at higher temperatures.

The specified mechanical and physical properties may not be maintained at low and/or lower temperatures.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the latest version (including all amendments) applies to this document. document.

GB/T 90.1 Fastener acceptance inspection

GB/T 196 Basic dimensions of ordinary threads

GB/T 197 Ordinary thread tolerances

GB/T 222 Allowable deviations in chemical composition of finished steel products

GB/T 224 Determination of Decarburized Layer Depth of Steel

GB/T 226 Acid etching inspection method for low magnification structure and defects of steel

GB/T 228.1 Tensile testing of metallic materials Part 1: Room temperature test method

GB/T 230.1 Rockwell hardness test of metallic materials Part 1: Test methods

GB/T 231.1 Brinell hardness test of metallic materials Part 1: Test method

GB/T 702 Dimensions, shapes, weights and tolerances of hot-rolled steel bars

GB/T 1228 High-strength large hexagon head bolts for steel structures

GB/T 1229 High-strength large hexagonal nuts for steel structures

GB/T 1230 High-strength gaskets for steel structures

GB/T 1231 Technical conditions for high-strength large hexagonal head bolts, large hexagonal nuts and washers for steel structures

GB/T 1979 Low-magnification structural defect rating chart of structural steel

GB/T 2101 General provisions for acceptance, packaging, marking and quality certificates of section steel

GB/T 2975 Sampling location and sample preparation for mechanical property testing of steel and steel products

GB/T 3098.1 Mechanical properties of fasteners bolts, screws and studs

GB/T 3098.2 Mechanical properties of fasteners nuts

GB/T 3098.26 Mechanical properties of fasteners flat washers

GB/T 3632 Torsional shear type high-strength bolt connection pairs for steel structures

GB/T 4171 Weather-resistant structural steel