GB/T 13295-2008 Ductile iron pipes, fittings and accessories for water or gas applications (Text of Document is in English) - Beijing translation compay

Foreword 1
1 Scope 1
2 Normative References 1
3 Terms and Definitions 2
4 Classification 3
4.1 Classification of ductile iron pipes 3
4.2 Classification of ductile iron pipes 4
4.3 Symbol and specification 4
5 Dimension, Appearance, Weight and Tolerance 6
5.1 Dimension and tolerance 6
5.2 Appearance 54
6 Technical Requirements 55
6.1 Mechanical properties 55
6.2 Materials in contact with potable water 55
6.3 Leaktightness requirements 55
6.4 Coating and linings for pipes 56
6.5 Surface condition and repairs 57
7 Test Methods 57
7.1 Dimension 57
7.2 Straightness of pipes 57
7.3 Mechanical property test 58
7.4 Seal test 60
7.5 Coating test 62
8 Inspection Rules 62
8.1 Inspection and acceptance 62
8.2 Batching rules 62
8.3 Sampling quantities 63
8.4 Judgment and retest rules 63
9 Marking and Quality Certificate 63
9.1 Marking 63
9.2 Quality certificate 64
Annex A 65
Annex B 68
Annex C 70
Annex D 78
Annex E 82
Annex F 85
Annex G 90
Annex H 92
Annex I 94
Annex J 95
Annex K 96
Annex L 97