Flanges are mainly used on tubular electric heating pipes, especially water heating pipes. The materials that can be customized are brass and stainless steel.

Lead brass is the most widely used brass material in brass red punching [forging] processing. It is widely used in floor heating manifolds, plumbing fittings, threaded unions, ppr pipe fittings, plugs, copper nuts and other general market fittings that do not require high material requirements. Brass materials include: HPB56/HPB59.

Lead brass HPb56-4 is the cheapest lead brass among non-standard HPb59-1 in the brass red stamping [forging] industry. It is a common brass material used in red forging. It has good red forging performance, good mechanical properties, good machinability, good welding performance and good corrosion resistance.

Stainless steel has the characteristics of high precision, and more and more electric heating tube producers use it.

Flanges