GB/T 15831-2023Steel tube scaffold coupler (English PDF)

Foreword

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

This document replaces GB 15831-2006 "Steel Steel Scaffold Fasteners". Compared with GB 15831-2006, except for structural adjustments and editorial changes In addition to the dynamics, the main technical changes are as follows:

a) The scope of the nominal outer diameter of steel pipes has been increased (see Chapter 1);

b) Changed the classification of fastener products (see 4.2, 4.2 of the 2006 edition);

c) Increase the service life requirements of fastener products (see 5.1);

d) Added material requirements for forged fastener products (see 5.2);

e) The weight requirements for fastener products with a steel pipe with a nominal outer diameter of 48.3 mm are added (see 5.4).

1 Scope

This document specifies the classification, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of steel pipe scaffolding fasteners.

This document is applicable to scaffolding, derrick, formwork support and Metal material fasteners used in railway, highway, water conservancy, chemical industry, metallurgy, coal and shipbuilding and other projects.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 95 flat gasket C grade

GB/T 196 Basic dimensions of ordinary thread

GB/T 228.1 Tensile tests on metallic materials - Part 1: Test methods at room temperature

GB/T 700 carbon structural steel

GB/T 867 round head rivets

GB/T 2828.1 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling plan retrieved by acceptance quality limit (AQL)

GB/T 3091 Welded steel pipes for low-pressure fluid transmission

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

GB/T 3098.2 Mechanical properties of fasteners Nuts

GB/T 3159 Hydraulic universal testing machine

GB/T 9440 malleable iron castings

GB/T 11352 Cast carbon steel parts for general engineering

3 Terms, definitions and symbols