Small-caliber seamless stainless steel pipe. Dia: 2mm-600mm Standard: ASTM A269 A213. Material: 304,304L,321,316L,310S,S32900 Small-caliber seamless stainless steel pipe.Dia: 2mm-25mmStandard: ASTM A269 A213.Material: 304,304L,321,316L,310S,S32900, S31803, S31500We could supply pipe with your special request for example roughness, tensile strength and so on.