1.Zirconium 702 R60702 plates 2.ANSI ,ASTM 3. ... alloy. Special alloy fastener mainly contain bolts,screws,nuts,washers and etc. Material: Super duplex stainless steel ... several years experience supplying productions to many countries and regions, including: Europe,Poncho,Southeast Asia,South ... have long-term cooperation and develop together. ZENT can offer bolts,nuts,washers and etc ,which material ...