... market with high quality and competitive price. carbon steel ring 6" Materialcarbon steel(A105,Q235,A350),alloy(F5,F9,F11),stainless ... ";standard:ANSI,JIS,DIN,BS,GBtypeWN,SO,BL,SW,LJ,TH,PLpaintingblack,yellow, galvanizing,antirusting oil;packingplywood case, palletMarketMiddle east,Southeast ...