It applies specifically to non-alloy steel tubular products used for aqueous liquids, including water intended for human consumption (potable water).
: Butt welded, welded spigot and socket, and welding collars. Mechanical Joints : Flange joints, threaded joints, and mechanical couplings. Sealed Joints : Spigot and socket joints featuring a seal. Key Requirements Integrity and Strength Bs En 10311 Pdf
These include Type 1 (tapered or parallel sleeves) and Type 2 (fabricated collars). It applies specifically to non-alloy steel tubular products