sweepolet 1) Material:stainless steel 2) Standard:ISO,DIN,JIS,GB 3) Used for transportation,lining. sweepoletall kinds of pipe ... customer requirementMaterialcarbon steel,stainless steel,alloy steel,cast steelStandardISO,DIN,JIS,ANSI/ASME,GB/T12459,GB/TCertificateCE,ISOSurfacerust-proof oil,black ...