... of Origin: China 3). Grade: 201,202,304,316L,430,etc Abstract:1). Product Name: stainless steel pipe2). Country of Origin: ... China 3). Grade: 201,202,304,316L,430,etc 4 ... crystal rot test, heat treatment, NDTSpecification:1). Model No.: 201201 stainless steel pipe with perfect surface settlement, strict tolerance, high quality ...