Steel pipes and spare parts of pipe connection:Steel pipes and spare parts will be manufactured from carbon steel sheet type fiber ST 360 with minimum flow is 25N/mm2 line with minimum operating pressure PN10N, the size of the tube line with regulation EVN 1010220:1993 or equivalent.The tube is indicated using the standard ISO 559-42 or equivalent.2. Construction of water supply systems, waste water discharge:2.1 method of constructing water supply system:All pipes, fittings, Assembly and similar materials must be marked: the name of the manufacturer, size, pressure, type, production date. Besides all the requirements on manufacturers required to comply. Soft iron pipes Assembly will be contractor specific instructions.
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