ISO 16631:2016
Ductile iron pipes, fittings, accessories and their joints compatible with plastic (PVC or PE) piping systems, for water applications and for plastic pipeline connections, repair and replacement

Standard No.

ISO 16631:2016

Release Date

2016

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 16631:2016/Amd 1:2018

Latest

ISO 16631:2016/Amd 1:2018

Scope

This International Standard speci fies the requirements and test methods applicable to ductile iron pipes, fittings, accessories and their joints with dimensions compatible with plastic (PVC or PE) piping systems: — to replace or repair existing plastic pipelines; — to convey water (e.g. for human consumption, raw water, etc.); — operated with or without pressure; — installed below or above ground; — de fined according to their external diameter (DN/OD series); — classi fied according to pressure (C class). The pressure class speci fied in this International Standard is C25. This pressure resistance level will meet or exceed those of plastic pipes. These ductile iron pipes, fittings, accessories and joints can be used along with plastic pipelines, where they are needed (for example, with higher pressure rating sections, higher traffic load, etc.), for the construction of water pipelines. The dimensions of the products according to this International Standard, in the size range DN/OD 50 to DN/OD 225, are compatible with those of plastic pipes (ISO 1452-2 for PVC and ISO 4427-2 for PE ) . The spigots of plastic pipes used for water applications can be inserted into sockets of pipes manufactured according to this International Standard. The spigots and sockets of products de fined in this International Standard are not dimensionally compatible with the products de fined in ISO 2531. This International Standard gives speci fications for materials, dimensions and tolerances, mechanical properties and standard coatings and linings of pipes, fittings and accessories. It also gives performance requirements for all components including joints. This International Standard covers pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components, as well as corresponding joints in the size range DN/OD 50 to DN/OD 225 inclusive. It is applicable to pipes, fittings and accessories which are — manufactured with socketed or spigot ends for jointing by means of various types of gaskets (which are not within the scope of this International Standard) , and — compulsory delivered internally and externally coated. This International Standard is also applicable to socketed fittings which include flanged connections. NO TE 1) In this International Standard, all pressures are relative pressures expressed in bar 1) . 100 kPa = 1 bar. 1

ISO 16631:2016 Referenced Document

• EN 12842:2012 Ductile iron fittings for PVC-U or PE piping systems - Requirements and test methods
• ISO ISO IEC 27001-2013 cor2-2015 technical errata*， 2024-04-20 Update
• ISO 1167-1:2006 Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 1: General method
• ISO 1452-2:2009 Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure - Unplasticized poly(vinyl chloride) (PVC-U) - Part 2: Pipes
• ISO 161-1:1996 Thermoplastics pipes for the conveyance of fluids - Nominal outside diameters and nominal pressures - Part 1: Metric series
• ISO 2531:2009 Ductile iron pipes, fittings, accessories and their joints for water applications
• ISO 4016:2011 Hexagon head bolts - Product grade C
• ISO 4034:2012 Hexagon regular nuts (style 1) - Product grade C
• ISO 4179:2005 Ductile iron pipes and fittings for pressure and non-pressure pipelines - Cement mortar lining
• ISO 4427-2:2007 Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply - Part 2: Pipes
• ISO 4633:2015 Rubber seals - Joint rings for water supply, drainage and sewerage pipelines - Specification for materials
• ISO 6506-1:2014 Metallic materials - Brinell hardness test - Part 1: Test method
• ISO 6708:1995 Pipework components - Definition and selection of DN (nominal size)
• ISO 6892-1:2009 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
• ISO 7005-2:1988 Metallic flanges; part 2: cast iron flanges
• ISO 7091:2000 Plain washers - Normal series - Product grade C
• ISO 7268:1983 Pipe components; Definition of nominal pressure
• ISO 7483:1991 Dimensions of gaskets for use with flanges to ISO 7005

ISO 16631:2016 history

• 2018 ISO 16631:2016/Amd 1:2018 Ductile iron pipes, fittings, accessories and their joints compatible with plastic (PVC or PE) piping systems, for water applications and for plastic pipeline connections, repair and replacement
• 2016 ISO 16631:2016 Ductile iron pipes, fittings, accessories and their joints compatible with plastic (PVC or PE) piping systems, for water applications and for plastic pipeline connections, repair and replacement