Stainless steel pipe is a kind of hollow long round steel, which is mainly used in industrial transportation pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and so on. Yn ogystal, pan fo'r cryfder plygu a thorsional yr un fath, mae'r pwysau'n ysgafnach, felly fe'i defnyddir yn eang hefyd wrth gynhyrchu rhannau mecanyddol a strwythurau peirianneg.