GB/T 3287–2011 Malleable cast iron pipe fittings (Text of Document is in English) - Beijing translation compay

Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
4.1 By surface state
4.2 By structural type
4.3 Designation
5 Requirements
5.1 Materials of fitting
5.2 Hot galvanized layer
5.3 Anti – rusting treatment on fitting surface
5.4 Design
5.5 Dimensions and tolerance
5.8 Limit deviation of perpendicularity of pipe threads axis
5.9 Chamfering
5.10 Manufacturing
5.11 Performance requirements
6 Test method
6.1 Malleable cast iron
6.2 Hot galvanized layer
6.3 Threads 6.3.1 Sealing pipe threads
6.4 Measurement of pipe threads perpendicularity deviation
6.5 Test for sealing requirments
6.6 Final visual inspection
6.7 Analysis of PHA
7 Inspection rules
7.1 Sampling plan and judgment rules of inspection in the factory
7.2 Sampling plan, examination, and judgment of type inspection
8 Fitting dimensions and laying lengths – General
9 Labeling, packaging, transportation, and storage
9.1 Labeling
9.2 Packaging
9.3 Transportation
9.4 Storage
9.5 Anti-rusting duration
Annex A (Normative) Type dimensions of pipe lines connecting pieces