... OD:9mm-200mm 3.length:3m or as your requirements high quality stainless steel pipes StandardASTM,AISI,GB,BS,JIS,EN,DISOuter Diameter10mm- ... not need paint or other surface finishes. Stainless steel is used for jewelry and watches with 316L being the type commonly used ... . We have more than 3 years of experiences in producing high quality stainless steel products, such as: 201, 301, 304, 321, 316, 316L, ...