ISO 2531:2009
Ductile iron pipes, fittings, accessories and their joints for water applications
ISO 2531:2009 specifies the requirements and test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of pipelines:
- to convey water (e.g. for human consumption and raw water),
- operated with or without pressure, and
- installed below or above ground.
It specifies materials, dimensions and tolerances, mechanical properties and standard coatings of pipes, fittings and accessories. It also gives performance requirements for all components including joints.
ISO 2531:2009 applies to 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 40 to DN 2600 inclusive.
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Scope
Normative references
Terms and definitions
Technical requirements
General
Pipes and fittings
Surface condition and repairs
Types of joints and interconnection
General
Flanged joints
Flexible joints
Restrained joints
Materials in contact with water intended for human consumpti
Pressure classification and dimensional requirements
Pressure classifications
General
Preferred pressure classes
Allowable pressures
Diameter
External diameter
Internal diameter
Wall thickness
Pipes with flexible joints
Flanged pipes
Fittings
Length
Socket and spigot pipes
Flanged pipes
Fittings
Tolerances on lengths
Straightness of pipes
Material characteristics
Tensile properties
Brinell hardness
Coating and linings for pipes
External coatings
Internal linings
Coatings and linings for fittings and accessories
External coatings
Internal linings
Marking
Leaktightness requirements
Pipes and fittings
Flexible joints
General
Internal pressure
External pressure
Negative internal pressure
Flanged joints as cast, screwed, welded and adjustable
General
Internal pressure and bending moment
Test methods
Dimensions
External diameter
Wall thickness
Length
Straightness of pipes
Tensile test
Sampling
Centrifugally cast pipes
Pipes not cast centrifugally, fittings and accessories
Test bar
Equipment and test method
Test results
Test frequency
Brinell hardness
Works leaktightness test of pipes and fittings
General
Centrifugally cast pipes
Pipes not cast centrifugally and fittings
Type tests
Leaktightness of joints to internal pressure
Leaktightness of joints to external pressure
Leaktightness of joints to negative internal pressure
Leaktightness and mechanical resistance of flanged joints
Tables of dimensions
Socket and spigot pipes
Flanged pipes
Fittings for socketed joints
Flanged sockets
Flanged spigots
Collars
Double-socket 90° (1/4) bends
Double-socket 45° (1/8) bends
Double-socket 22° 30' (1/16) bends
Double-socket 11° 15' (1/32) bends
All socket tees
Double-socket tees with flanged branch, DN 40 to DN 250
Double-socket tees with flanged branch, DN 300 to DN 700
Double-socket tees with flanged branch, DN 800 to DN 2600
Double-socket tapers
Fittings for flanged joints
Double-flanged 90° (1/4) bends
Double-flanged duckfoot 90° (1/4) bends
Double-flanged 45° (1/8) bends
All flanged tees, DN 40 to DN 250
All flanged tees, DN 300 to DN 700
All flanged tees, DN 800 to DN 2600
Double-flanged tapers
Blank flanges PN 10
Blank flanges PN 16
Blank flanges PN 25
Blank flanges PN 40
Reducing flanges PN 10
Reducing flanges PN 16
Reducing flanges PN 25
Reducing flanges PN 40
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Related Information
Similar Standards
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AS/NZS 1518:2002
External extruded high-density-polyethylene coating system for pipes
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AS/NZS 1518:2002 A1
External extruded high-density-polyethylene coating system for pipes: Amendment 1
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AS/NZS 2537.1:2011
Mechanical jointing fittings for use with crosslinked polyethylene (PE-X) for pressure applications - Part 1: Plastics piping systems for hot and cold water installations - Crosslinked polyethylene (PE-X) - General
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AS/NZS 2537.1:2011
Mechanical jointing fittings for use with crosslinked polyethylene (PE-X) for pressure applications - Part 1: Plastics piping systems for hot and cold water installations - Crosslinked polyethylene (PE-X) - General
Scope
Normative references
Terms and definitions
Technical requirements
General
Pipes and fittings
Surface condition and repairs
Types of joints and interconnection
General
Flanged joints
Flexible joints
Restrained joints
Materials in contact with water intended for human consumpti
Pressure classification and dimensional requirements
Pressure classifications
General
Preferred pressure classes
Allowable pressures
Diameter
External diameter
Internal diameter
Wall thickness
Pipes with flexible joints
Flanged pipes
Fittings
Length
Socket and spigot pipes
Flanged pipes
Fittings
Tolerances on lengths
Straightness of pipes
Material characteristics
Tensile properties
Brinell hardness
Coating and linings for pipes
External coatings
Internal linings
Coatings and linings for fittings and accessories
External coatings
Internal linings
Marking
Leaktightness requirements
Pipes and fittings
Flexible joints
General
Internal pressure
External pressure
Negative internal pressure
Flanged joints as cast, screwed, welded and adjustable
General
Internal pressure and bending moment
Test methods
Dimensions
External diameter
Wall thickness
Length
Straightness of pipes
Tensile test
Sampling
Centrifugally cast pipes
Pipes not cast centrifugally, fittings and accessories
Test bar
Equipment and test method
Test results
Test frequency
Brinell hardness
Works leaktightness test of pipes and fittings
General
Centrifugally cast pipes
Pipes not cast centrifugally and fittings
Type tests
Leaktightness of joints to internal pressure
Leaktightness of joints to external pressure
Leaktightness of joints to negative internal pressure
Leaktightness and mechanical resistance of flanged joints
Tables of dimensions
Socket and spigot pipes
Flanged pipes
Fittings for socketed joints
Flanged sockets
Flanged spigots
Collars
Double-socket 90° (1/4) bends
Double-socket 45° (1/8) bends
Double-socket 22° 30' (1/16) bends
Double-socket 11° 15' (1/32) bends
All socket tees
Double-socket tees with flanged branch, DN 40 to DN 250
Double-socket tees with flanged branch, DN 300 to DN 700
Double-socket tees with flanged branch, DN 800 to DN 2600
Double-socket tapers
Fittings for flanged joints
Double-flanged 90° (1/4) bends
Double-flanged duckfoot 90° (1/4) bends
Double-flanged 45° (1/8) bends
All flanged tees, DN 40 to DN 250
All flanged tees, DN 300 to DN 700
All flanged tees, DN 800 to DN 2600
Double-flanged tapers
Blank flanges PN 10
Blank flanges PN 16
Blank flanges PN 25
Blank flanges PN 40
Reducing flanges PN 10
Reducing flanges PN 16
Reducing flanges PN 25
Reducing flanges PN 40