QI Series Ball Joint
1)Round smoothly without stagnation;
2)Thread precision:grade 6H;
3)Ball pin:1045 Carbon steel or 40 Cr steel;
4)Ball housing:1045,1020 Carbon steel or stainless steel;
5)Durability testing:proucts can be in -30℃ to 100℃ can normal use,and can reach 500000 times;
6)Lubricant:Ball housing has adequate lubricant;
7)Refers to QC/T327-1999 and relevant standards.