BS EN 10311:2005

What is BS EN 10311 - Joints for the connection of steel tubes and fittings about?  

BS EN 10311 is a European standard that discusses the joints for the connection of steel tubes and fittings. BS EN 10311 specifies a range of jointing methods for connecting low alloy steel tubes and steel tubes and fittings for use with aqueous liquids. 

The following specific joint types are covered by BS EN 10311: butt welded joints, welded spigot and socket (or sleeve joints), welding collars, flange joints, threaded joints, spigot and socket joints with seal and mechanical couplings. 

BS EN 10311 specifies requirements for the strength and integrity of the joints and the testing of the joints. 

BS EN 10311 is suitable for joints intended for the conveyance of water for human consumption, after an appropriate coating has been applied. 

Note1: BS EN 10311 does not specify the requirements for the tubes or the fittings. 

Note2: BS EN 10311 is not intended for use in heating networks where elevated temperature properties are required. 

Note3: Flexible joints which permit significant angular deflection, both during and after installation and which can accept slight offset of the centre line, are not covered by BS EN 10311. 

Who is BS EN 10311 - Joints for the connection of steel tubes and fittings for? 

BS EN 10311 on joints for the connection of steel tubes and fittings is useful for: 

• Steel tubes and fittings manufacturers 
• Water and other aqueous liquids suppliers 
• Quality control personnel 

Why should you use BS EN 10311 - Joints for the connection of steel tubes and fittings?  

BS EN 10311 applies to joints for use with non-alloy steel tubular products for use with all types of aqueous liquids. In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by BS EN 10311: 

• BS EN 10311 provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA 
• It should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. 

BS EN 10311 provides you with the classification, requirements, and testing that help you improve the durability and longevity of steel tubes and fittings for use with aqueous liquids. 

Requirements for the evaluation of conformity included in BS EN 10311 for the ability of a product to maintain its required performance over time, under the influence of foreseeable actions. To ensure the full performance of steel tubes and fittings for use with aqueous liquids, their production and installation are intended to be controlled in accordance with BS EN 10311.