GB/T 26081-2022 Ductile iron pipes,fittings and accessories for sewerage applications
GB/T 26081-2022 Ductile iron pipes,fittings and accessories for sewerage applications
Basic Information
Scope
This document specifies the technical requirements, performance requirements, testing methods, type tests, inspection rules, marking, quality certificates, and dimension tables for ductile iron pipes, fittings, and accessories used in building external drainage projects, which are produced by any casting process or processing form.
This document applies to ductile iron pipes, fittings (hereinafter referred to as "pipes" and "fittings"), and accessories with a size range of nominal diameter DN80~DN3000, which include socket, socket, or flange, and are generally delivered in an internally and externally coated state. The scope of application is as follows:
——Operating under no pressure, positive pressure, or negative pressure conditions;
——Installed above or below ground;
——Distributing or collecting rainwater, sewage, and certain types of industrial wastewater.