... steel 3.Cert:ISO9001:2008,TUV2010,PED2010 ANSI Stainless Steel(SS)321 LB2000MainMaterialStainless steel,Carbon steel,Alloy steelWN/BL/PL/SO ... /SW/THANSIANSI B16.5 B16.47 API-605,6A,6B,MSS Sp44, AWWA S207DINDIN2527,DIN2566,DIN2573,DIN2576,DIN2641,DIN2642, DIN2655 ...