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

Standard No.

ISO 16631:2016/Amd 1:2018

Release Date

2018

Published By

/

Latest

ISO 16631:2016/Amd 1:2018

Scope

This International Standard specifies 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; — defined according to their external diameter (DN/OD series); — classified according to pressure (C class). The pressure class specified 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 defined in this International Standard are not dimensionally compatible with the products defined in ISO 2531. This International Standard gives specifications 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. NOTE In this International Standard, all pressures are relative pressures expressed in bar1). 1) 100 kPa = 1 bar. 

ISO 16631:2016/Amd 1:2018 Referenced Document

• ISO 10802 Ductile iron pipelines — Hydrostatic testing after installation*， 2020-08-28 Update
• ISO 10804 Restrained joint systems for ductile iron pipelines — Design rules and type testing*， 2018-01-03 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 13846 Plastics piping systems - End-load-bearing and non-end-load-bearing assemblies and joints for thermoplastics pressure piping - Test method for long-term leaklightness under internal water pressure
• ISO 1452-2 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 16132 Ductile iron pipes and fittings*， 2024-03-01 Update
• ISO 2531 Ductile iron pipes, fittings, accessories and their joints for water applications; Technical Corrigendum 1
• ISO 4016 Fasteners — Hexagon head bolts — Product grade C*， 2022-06-28 Update
• ISO 4034 Hexagon regular nuts (style 1) - Product grade C; Technical Corrigendum 1
• ISO 4179 Ductile iron pipes and fittings for pressure and non-pressure pipelines*， 2024-01-01 Update
• ISO 4427-2 Plastics piping systems for water supply, and for drainage and sewerage under pressure — Polyethylene (PE) — Part 2: Pipes — Amendment 1*， 2023-02-20 Update
• ISO 4633 Rubber seals — Joint rings for water supply, drainage and sewerage pipelines — Specification for materials*， 2023-07-01 Update
• ISO 6506-1 Metallic materials - Brinell hardness test - Part 1: Test method
• ISO 6892-1 Metallic materials — Tensile testing — Part 1: Method of test at room temperature*， 2019-11-15 Update
• ISO 7005-2 Metallic flanges; part 2: cast iron flanges
• ISO 7091 Plain washers - Normal series - Product grade C
• ISO 8179-1 Ductile iron pipes, fittings, accessories and their joints - External zinc-based coating - Part 1: Metallic zinc with finishing layer
• ISO 8179-2 Ductile iron pipes, fittings, accessories and their joints - External zinc-based coating - Part 2: Zinc-rich paint
• ISO 8180 Ductile iron pipelines — Polyethylene sleeving for site application*， 2020-06-26 Update

ISO 16631:2016/Amd 1:2018 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