DL/T 646–2012 Manufacturing technical requirements for steel tubular structures of substation and transmission line (Text of Document is in English) - Beijing translation compay

Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions, symbols
4 General provisions
5 Product classifications
6 Materials
7 Parts processing
8 Welding
9 Weldment assembly
10 Correction
11 Test assembly
12 Hot-dip galvanizing and hot spray zinc coating
13 Inspection
14 Packaging, marking, storage and transportation
Annex A (Normative) The uniformity test of hot dip galvanized coatings and the test methods of copper sulfate
Annex B (Normative) The adhesiveness of hot dip galvanized coatings and the drop hammer test method
Annex C (Normative) The thickness test of hot dip galvanized coatings and the test methods of metal coatings thickness gauge
Annex D (Normative) The adhesion amount test of hot dip galvanized coatings and the test methods of dissolve-to-weigh