Washers ASTM F436M TYPE 3 ASTM A606-4 Cor Ten weathering steel Nominal diameter :36 D=71mm (+/- 1,00mm) d=39.3mm (+/-0.3mm) t=4.1mm (+/-0.5mm) (t=4 for example) Qty: 600 PCS Washers ASTM F436M TYPE 3 ASTM A606-4 Cor Ten weathering steel Nominal diameter :42 D=83mm (+/- 1,00mm) d=45.3mm (+/-0.3mm) t=5,5mm (+/-1.7mm) (t=6 for example) Qty: 600 Washers SA 193 GrB 16 Thickness 4mm OD= c.a.70mm ID=c.a. 40mm t=6mm Qty: 600 I need those to have 3.1 EN 10204 cert. saying material has its origin in EU USA, Canada or CIS