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EN 1092-1 Flange standard: Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated- steel flanges.
EN 10204 is European standard for the inspection documents for the steel products including steel line pipe, fittings, steel plate, valves, sucker rods etc
The EN 10210 is a European Standard prepared for Structural steel. There are various grades that come under this standard like S235, S275, S355, S420, and S460. Out of these, the commonly used grade is EN 10210 S355 grade
EN10216-2 is specification made for seamless steel tubes for specified elevated temperature purposes as boiler tube, power plants, etc
EN 10217 Welded Steel Pipe has five different pressure purposes. There are 10217-1 is for room temperature service, -2 is for elevated temperature service, -3 for fine grain tubes, -4 for low temperature and -5 for elevated temperature services.
European Standard EN 10219 specifies the technical delivery conditions for cold-formed welded structural hollow sections of circular, square or rectangular forms and applies to structural hollow sections formed cold without subsequent heat treatment
EN 10296--Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 1: Non-alloy and alloy steel tubes
EN 10297-1: 2003 Seamless circular steel tubes for mechanical and general engineering purposes. Non-alloy and alloy steel tubes. Technical delivery conditions
BS EN 10312 welded stainless steel tube for the conveyance of water and other aqueous liquids, primarily for water applications, stainless steel tube more and more used for drinking water because of its excellent corrosion resistance and durable feature