N° 28 Stud bolts ¾ “ UNC “ x L 200 - ASTM A 193-B7 N° 56 Nuts – ¾” UNC - ASTM 194 – 2H Origin and conformity certification required EN10204-3.1 - DIN50049-2.1. for “impact test” minimum temperature of 0 °C; Please advise delivery terms