Here at Besseges (Valves, Tubes & Fittings) Ltd and valvestubesfittings.com we are suppliers of flanges EN 1092-1. We have noted that some of our competitors are now offering what we see as an inferior option to what we supply to reduce prices. Our business has been ISO 9001:2008 for over ten years; and because of this we are bound to offer traceable material wherever possible. We feel it is our obligation to our customer base to ensure that they receive the best possible quality product; and of course, that the material test certification is satisfactory.
When putting together pressure systems using flanges, the material quality can often be paramount, especially to those welding the product. Now we offer flanges EN 1092-1 in S235JR material, these flanges are available with 3.1b test certificates which applies to that flange. In other words, the flange supplied is completely traceable and the test cert applies only to that batch; as each is stamped with a unique batch number.
Now if you purchase a flange that is only marginally cheaper from one of our close competitors, you are likely to receive flanges EN 1092-1 that only have 2.2 certification. A 2.2 certificate is a statement of compliance based on non-specific inspections