Its"SHENGYANG"brand series of stainless steel seamless pipes,boller pipes,chemical pipes,precise brilliant pipes ect,are widely applied to the petroleum,aviation,metallury,food,irrigation works,electric power,chemical industry,chemistry,medicine.The products covering various austenitic stainless steel such as 304,TP304,TP321,321,316,TP316L,317L,310S,347H.