... 400,600,hairline,2B 3.Standard : AISI,ASTM,GB, S S Welded Pipe for Handrail SpecificationsStainless Steel Welded Pipe for Handrail ... 400,600,hairline,2B 3.Standard : AISI,ASTM,GB, S S Welded Pipe for Handrail Description FOSHAN SANSHUI FUDIDUO STAINLESS STEEL ... all products had passed ISO9001:2008 Certificate,and owns our brand "fudiduo Brand" B)Warranty: 1). products had reach international export ...