... mechanical test, Chemical composition analysis, corrosion test etc. Stainless steel pipeAPHYA Co., Ltd is a famous international trading company in ... with customers in South America, Indian and Europe. Stainless steel pipe mainly used in heat Exchange tube, car engine ... 430, 439 etc.5) Surface: Bright anneal, mirror polish, statin finish, mill finish.6) Eddy current, hydrolic test, mechanical test, ...