BS EN 969:1996- Specification for ductile iron pipes, fittings, accessories and their joints for gas pipelines. Requirements and test methods
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This European Standard specifies the requirements and associated test methods applicable to ductile
iron pipes, fittings, accessories and their joints for the construction of pipelines:
to convey air or combustible gases (e.g. natural gas or town gas) at pressures up to 16 bar;
to be installed below or above ground.