ISO/TC 5 - Ferrous metal pipes and metallic fittings

This document specifies the recommended practices and requirements for the installation of buried and above-ground ductile iron pipeline system conforming to ISO 2531, ISO 7186 and ISO 16631. The recommended practices in this document are intended to provide the practical advices based on the best methods of construction and installation of ductile iron pipeline system including pipes, fittings, valves and accessories.

This document specifies site hydrostatic acceptance tests for installed pressure and non-pressure ductile iron pipelines used for conveying water and other liquids. It does not cover testing of pipelines for gas. NOTE In this document, all pressures are relative pressures expressed in bars, where 1 bar = 0,1 MPa.

This document specifies the characteristics of polyethylene film, commonly called polyethylene sleeving, used as additional protection against corrosion for ductile iron pipelines, particularly when laid in aggressive soil conditions. This film, the efficiency of which has been proved by experience, takes the form of a sheet or tube fitted around the pipes and fittings, on-site, immediately before pipe-laying.

This document specifies the design of earthquake-resistant and subsidence-resistant ductile iron pipelines suitable for use in areas where seismic activity and land subsidence can be expected. It provides a means of determining and checking the resistance of buried pipelines and gives example calculations. It is applicable to ductile iron pipes and fittings with joints as specified in ISO 2531, ISO 7186 and ISO 16631 that have expansion/contraction and deflection capabilities, used in pipelines buried underground. NOTE Subsidence is not the effects of an earthquake or a sinkhole.

This document defines current terms concerning metal hoses, metal hose assemblies and component parts. This document applies to: a) stripwound metal hoses and hose assemblies; b) corrugated metal hoses and hose assemblies. NOTE 1 These hoses can be used braided, covered or lined. NOTE 2 Equivalent terms in English, French, German and Dutch are given in Annex A.

This document specifies the evaluation method of life cycle analysis of ductile iron pipes used for water applications as specified in ISO 2531 and ISO 16631. Studies on economic and environmental impacts are important for utility decision-makers as they seek to balance budget concerns over immediate and long-term needs across acquisition, operations and maintenance, and planned end of life. For authorities and engineers designing pipeline systems, the life cycle cost analysis serves as a tool to study various scenarios to determine the right solution for site-specific conditions and community values, as well as to provide the necessary data to support those decisions. Informative annexes are included in this document as a compilation of reference and consensual factors (pumping cost, leakage incident rate, etc.).

ISO 10804:2018 specifies the design rules and type testing for restrained joint systems to be used on ductile iron pipelines complying with ISO 2531 and ISO 7186, in order to determine their mechanical properties and leaktightness.

ISO 8179-2:2017 specifies an external protective coating system which is factory-applied to ductile iron pipeline components as specified in ISO 2531, ISO 7186 and ISO 16631. This coating system comprises a zinc-rich paint followed by a finishing layer that can be bituminous paint or synthetic resin compatible with zinc rich paint coating. NOTE ISO 8179-1 addresses metallic zinc-based coatings.

ISO 8179-1:2017 specifies an external protective coating system which is factory applied to ductile iron pipeline components as specified in ISO 2531, ISO 7186 and ISO 16631. This coating system comprises an electro-deposited metallic zinc-based coating of - pure metallic zinc with a purity of 99,99 %, - zinc and aluminium alloy with or without other metals, or - other zinc alloys followed by a finishing layer that can be bituminous paint or synthetic resin compatible with zinc-based coating. NOTE ISO 8179-2 deals with zinc-rich paint coating.

ISO 18468:2017 specifies the requirements and test methods applicable to factory applied epoxy coatings (fusion bonded or 2-pack liquid epoxy) for ductile iron fittings and accessories supplied to ISO 2531 and ISO 7186, and ductile iron valves. It covers internal and external coatings for use in the conveyance of raw water, potable water and waste waters for operating temperatures up to 60 °C. ISO 18468:2017 contains specifications for performance tests and routine tests of the coating.

ISO 9349:2017 specifies the requirements and test methods applicable to preinsulated ductile iron pipes, fittings, accessories and their joints for the construction of pipelines (or parts thereof): - to convey water (e.g. potable water), wastewater and other liquids; - to be operated with or without pressure; - to be installed below or above ground; - to limit temperature variations of the conveyed fluids. These pipelines are mainly used to prevent the water to be conveyed from freezing by providing external insulation. NOTE 1 In this document, all pressures are relative pressures expressed in bars[1]). ISO 9349:2017 gives, in addition to the specifications of the existing International Standards for the conveying ductile iron pipes and fittings, specifications for materials, dimensions and tolerances, mechanical and thermal properties of the thermal insulation layer and external casing of preinsulated ductile iron pipes, fittings and accessories. ISO 9349:2017 covers preinsulated ductile iron pipes, fittings and accessories of a size range extending from DN 60 to DN 600 inclusive, which are as follows: - manufactured with socketed, flanged or spigot ends for jointing by means of various types of gaskets which are not within the scope of this document; - preinsulated in the works (excluding on site application of the insulation layer and/or the casing); - normally delivered internally and externally coated; - intended for fluid temperatures from 0 °C to 50 °C, excluding frost. NOTE 2 Other applications are possible by agreement between manufacturer and purchaser. [1]) 100 kPa = 1 bar.

ISO 16132:2016 specifies the requirements for seal coatings for factory application to the surfaces of cement mortar linings, which are factory applied to the interior of ductile iron pipes and fittings. It provides the performance requirements for short-term sealing efficiency, long-term durability and cyclic pressure, as well as the routine testing requirements for visual appearance, coating thickness and adhesion. ISO 16132:2016 is applicable to products for potable and other water applications.

ISO 16631:2016 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. ISO 16631:2016 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. ISO 16631:2016 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. ISO 16631:2016 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. ISO 16631:2016 is also applicable to socketed fittings which include flanged connections. NOTE In this International Standard, all pressures are relative pressures expressed in bar[1]. [1] 100 kPa = 1 bar.

ISO 10380:2012 specifies the minimum requirements for the design, manufacture, testing and installation of corrugated metal hose and metal hose assemblies.

1 Scope This International Standard specifies the requirements, test methods and installation technologies applicable to ductile iron pipes used in trenchless applications: — to convey water or wastewater; — operated with or without pressure. NOTE In this International Standard, all pressures are relative pressures expressed in bar(s)1). This International Standard 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. Joint design and gasket shapes are outside the scope of this International Standard. This International Standard 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, of a size range DN 80 to DN 2 600 inclusive.

ISO 10803:2011 specifies the design of ductile iron pipes used for conveying water, sewerage and other fluids, with or without internal pressure and with or without earth and traffic loading.

ISO 10799-1:2011 specifies the technical delivery requirements for cold-formed welded structural hollow sections of circular, square or rectangular form. It is applicable to structural hollow sections formed cold without subsequent heat treatment. ISO 10799-1:2011 gives the grades, chemical composition and mechanical properties for non-alloy steels and fine grain steels.

ISO 12633-1:2011 specifies the technical delivery requirements for hot-finished hollow sections of circular, square or rectangular form. It is applicable to hollow sections formed hot with or without subsequent heat treatment or formed cold with subsequent heat treatment to obtain equivalent metallurgical conditions to those obtained in the hot-formed product. Fine grain steels are generally delivered in the normalized condition. ISO 12633-1:2011 gives the grades, chemical composition and mechanical properties for non-alloy steels and fine grain steels.

ISO 12633-2:2011 specifies the tolerances for hot-finished circular, square and rectangular structural hollow sections, and gives the dimensions and sectional properties for a range of standard sizes.

ISO 10799-2:2011 specifies the tolerances for cold-formed welded circular, square and rectangular structural hollow sections, and gives the dimensions and sectional properties for a range of standard sizes.

ISO 7005-1:2011 establishes a base specification for pipe flanges suitable for general purpose and industrial applications including, but not limited to, chemical process industries, electric power generating industries, petroleum and natural gas industries. It places responsibility for the selection of a flange series with the purchaser. It is applicable to flanges within facilities engaged in the processing or handling of a wide variety of fluids, including steam, pressurized water and chemical, petroleum, natural gas or related products. ISO 7005-1:2011 is also applicable to packaged equipment piping, which interconnects individual pieces or stages of equipment within a packaged equipment assembly for use within facilities engaged in the processing or handling of a variety of fluids, including steam and chemical, petroleum, natural gas or related products.

ISO 7186:2011 specifies the requirements and test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of drains and sewers outside buildings: - to convey surface water (e.g. rainwater), domestic waste water and/or certain types of industrial effluents, either in separate systems or in combined systems; - operating without pressure (gravity sewers) or with positive or negative pressure; - for installation below or above ground. ISO 7186:2011 contains specifications for 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 7186:2011 is applicable 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 80 to DN 2600 inclusive. It is applicable to pipes, fittings and accessories which are manufactured with socketed, flanged or spigot ends (joint design and gasket shape are outside the scope of ISO 7186:2011) and normally delivered internally and externally coated.

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.

ISO 6594:2006 specifies the characteristics of cast iron drainage pipes and fittings used for the installation of discharge pipes for waste and sewage, rain water pipe systems, and ventilation pipe systems. The technical specification is applicable to the range of nominal sizes, DN: 40 - 50 - 70 - 75 - 100 - 125 - 150 - 200 - 250 - 300 - 400 - 500 - 600. In addition, ISO 6594:2006 gives the dimensions for the most commonly used pipe and fitting sizes. It also provides control testing and test methods for checking compliance with the technical specification and the dimensional and other requirements.

ISO 4179:2005 specifies the nature, the method of application, the surface condition and the minimum thickness of internal linings of cement mortar for ductile iron pipes and fittings for pressure and non-pressure pipelines as defined in ISO 2531 and ISO 7186. ISO 4179:2005 covers cement mortar linings which are used to improve the hydraulic properties of pipes and fittings compared to un-lined pipes and fittings and/or to prevent corrosion damage and includes special requirements for linings of gravity sewers operating partially filled. ISO 4179:2005 also covers linings used for the conveyance of particularly aggressive fluids, where the following solutions may be used either separately or in combination: a) an increase in the thickness of the lining; b) a change of the type of cement; c) a coating over the lining.

ISO 15465:2004 specifies the requirements for the design, manufacture and testing of four principal types of stripwound metal hose and hose assemblies, of which only one type is for pressure applications. The four are: single overlap, unpacked and packed; double overlap, unpacked and packed, the last of these having maximum permissible pressures of up to 40 bar. These hoses and hose assemblies may be supplied in nominal sizes from DN 6 to DN 500 and may operate at temperatures up to 600 °C dependent on materials of construction.

ISO 10806:2003 specifies the characteristics of fittings for corrugated metal hose conforming with the requirements of ISO 10380. ISO 10806:2003 is also valid for other fittings provided they meet the material, design, assembly and test requirements specified herein.

ISO 4144:2003 specifies the types, pressure-temperature ratings, minimum dimensions and materials of stainless steel fittings for threaded connections in accordance with ISO 7-1, used for ordinary piping for steam, air, gas, water, oil, etc.

This part of ISO 228 specifies the requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes 1/16 to 6 inclusive. Both internal and external threads are parallel threads, intended for the mechanical assembly of the component parts of fittings, cocks and valves, accessories, etc. These threads are not suitable as jointing threads where a pressure-tight joint is made on the thread. If assemblies with such threads must be made pressure-tight, this should be effected by compressing two tightening surfaces outside the threads, and by interposing an appropriate seal. NOTE 1 For pipe threads where pressure-tight joints are made on the threads, see ISO 7-1. NOTE 2 ISO 228-2 gives details of methods for verification of fastening thread dimensions and form, and recommended gauging systems.

This part of ISO 7 specifies a process using limit gauges, for the validation of taper internal and external threads and parallel internal threads on piping systems components and other products, the dimensions and tolerances of which are detailed in ISO 7-1. The gauging system described may not be suitable, without special precautions, for gauging of threads on injection moulded plastic workpieces. This part of ISO 7 does not cover completely all the requirements necessary for full control of thread quality and dimensions. Additional control of tools and equipment and visual inspection during production are required to ensure complete compliance with ISO 7-1, for example the length of useful thread on internally threaded workpieces should be checked by direct measurement. Annex A gives a summary of the gauges included in this part of ISO 7, together with details of the thread elements controlled by each gauge and gauge identification numbers. In the event of a dispute over compliance with the requirements of ISO 7-1, the gauges in this part of ISO 7 are to be considered as decisive for the thread elements which they control on the workpiece.

Replaces the first line in subclause 5.3 and replaces subclause 11.7 by a new wording.

Cancels and replaces the first edition (1980). Gives the definition of DN (nominal size) when applied to components of a pipework system, as specified in those standards which use the DN designation system. Gives a list of preferred DN values.

Specifies requirements for the design and performance of the fittings, being for general purposes for the transmission of fluids and gases up to the limits of pressure and temperature specified. They are intended for the connection of elements threaded in accordance with ISO 7/1, sizes 1/8 to 6. For use in conditions outside the pressure and temperature limits specified, consult the fitting manufacturer.

Specifies the design characteristics of corrugated flexible metallic hose which can be used to protect electrical wire and cable in explosive atmospheres or atmospheres where there is a risk of fire. These hoses can be used as static protection or for the protection of cables moved infrequently, occasionally, or less than once week. Also provides instructions for the use of these hoses and the tests required for type approval.

Specified the designation and lays down the dimensions and tolerances of pipe threads. Gives terms and definition as well as symbols and explanations including examples of the complete designation for a thread. Figures 1 to 4 illustrate details. Tabulates thread dimensions from 1/16 up to and including 6 inch.

The outside diameters and thicknesses of the tubes have been selected from ISO 4200. If thicknesses greater than 14,2 mm are needed, they should be choosen from ISO 4200. Specifies the diameters, tolerances and other parameters of tubes. It tabulates conventional masses for austenitic (table 1) and for ferritic and martensitic (table 2) stainless steel tubes.

Specifies the dimensions, tolerances, surface roughness, materials and hygienic requirements for seamless or welded tubes in straight length for the food industry.

Specifies dimensions for the following types of gaskets: non-metallic flat; spiral wound; metallic ring-joint; non-metallic envelope; corrugated, flat or grooved metallic and filled metallic. Annexes A and B are for information only.

Gives values of both plain end tubes for general purpose use and precision tubes. Its purpose is to give guidance on the selection of sizes for all activities concerned with the standardization of steel tubes, both nationally and internationally, to serve as a ready reckoner and to avoid the use by different countries of different masses for a tube of the same size. It is not applicable to tubes primarily intended to be screwed. This fourth edition cancels and replaces the third edition (1985), tables 2 and 3 of which have been technically revised by the addition of the outside diameter of 12.7 mm to series 2.

Specifies the majority of tolerances on dimensions used by ISO/TC 5/SC 1 in drawing up International Standards concerning steel tubes. Is intended for use as a basic document by all ISO technical committees concerned with the standardization of steel tubes. It cannot, therefore, be used as a standard for the definiton of a product. This second edition cancels and replaces the first edition (1977), the standardized tolerances on thickness of which have been technically revised.

This part defines the most common symbols with the aim of standardizing and facilitating the use of terminology in standards for steel hollow sections and associated products. Five figures illustrate the meaning of the text.

This first edition cancels and replaces ISO 3545:1981. This part defines the most common symbols with the aim of standardizing and facilitating the use of terminology in standards for steel tubes and associated products. Six figures illustrate the meaning of the text.

This part defines the most common symbols with the aim of standardizing and facilitating the use of terminology in standards for steel hollow sections and associated products. Five figures illustrate the meaning of the text. Annex A contains the bibliography.

This part, together with parts 1 and 3, cancels and replaces ISO 2084:1974, ISO 2229:1973 and ISO 2441:1975. Specifies requirements for circular grey, malleable and ductile cast iron flanges of series 1 and 2. Annex A (guidance on tolerances on dimensions) and B (bibliography) are for information only.

Specifies requirements for circular flanges of series 1 and 2. It also specifies the types of flanges and their facings,dimensions, tolerances, bolt sizes (including copper alloy), flange face surface finish, marking, testing, insperation and materials. An annex includes application and installation.

This second edition cancals and replaces the first edition (1980). Specifies the verification of cylindrical threads, the dimensions and tolerances of which are given in ISO 228-1. Since this 55o profile has different elements to be verified, it is necessary to provide for several GO and several NOT GO gouges.

Specifies requirements for fittings for threaded connections, used mainly for industrial purposes. Table 1 contains diagrams of types of fittings and their symbols. Tabulates the fitting dimensions (tables 2, 5, 9 to 12) with nominal sizes from DN 6 up to and including DN 100 (thread designation 1/8 to 4). Table 6 contains sockets (DN 6 to DN 150), reducing fittings are included in the tables 3, 7 and 8 (DN 8 DN 100 and DN 6 to DN 80 resp.), table 4 comprises elbows (DN 8 to DN 50).

This second edition cancels and replaces the first edition. Specifies the technical conditions for tubes. Tabulates the chemical composition (table 2) and mechanical properties (tables 3 to 6) as well as dimension (table 9) ranging from 4 mm up to and including 160 mm (outside diameter) and tests (tables 7 and 8). For use in hydraulic piping equipment they shall be used only in annealed or normalized condition.

This second edition cancels and replaces the first edition (1975). Specifies the technical conditions for tubes. Tabulates the chemical composition (table 2) and mechanical properties (tables 3 and 5) as well as dimensions (table 8) ranging from 6 mm up to and including 160 mm (outside diameter) and tests (tables 6 and 7). For use in hydraulic piping equiment they shall be used only in annealed or normalized condition.