Product Standards
GB/T 13295-2019 Nodular cast iron pipes, fittings and accessories for water and gas [4]
GB/T 17457-1998 General requirements for cement mortar centrifugal lining of ductile iron pipes
GB/T 17458-1998 Nodular cast iron pipe cement mortar centrifugal method lining fresh mortar composition inspection
GB/T 17459-1998 Nodular cast iron pipe asphalt coating
GB/T 17456 Nodular cast iron pipe with zinc spray on the surface
GB/T 17219-1998 Safety evaluation standard for drinking water delivery and distribution equipment and protective materials
Engineering standards
"Code for Construction Quality Acceptance of Building Water Supply and Drainage and Heating Engineering" GB50242-2002
Related standard diagrams
10S505 "Flexible interface water supply pipe buttress"
Selection suggestion
1. The selection of ductile iron pipes should be based on the specific conditions of the installation site, and the interface between straight pipes and fittings should be selected.
2. The rubber ring is usually made of NBR, SBR, EPDM and other materials.
3. The choice of coating: Choose a suitable coating according to the internal and external conditions during use. The existing internal coatings are epoxy resin, polyurethane internal and external coatings, PE film coatings and other new products of ductile iron pipes, and their performance should be understood in detail when selecting them.
