Open type blind rivet countersunk head can be shaped by two peace round. Among them, the performance rating of 10 and 11 of the open type blind rivets applied more widely. 2006 National Standards Commission issued a revised GB / T 12617.1-2006 "countersunk head open type blind rivets 10,11-class" and GB / T 12618.1-2006 "opening blind rivets Flat round head 10,11-class" two About 10, 11 grade open type blind rivets national standards. The two new standards were adopted ISO15978: 2002 and ISO15977: 2002 international standard, on July 5, 2006 published on December 1, 2006 formally implemented. Blind rivets www. lpmaoding. Com