It is worthwhile to be note that our guardrail bolts were rated high-quality ,famous products by the China General-purpose Machine Parts Industrial Association and Fasteners Professional Association as early as in 1998. The annual output is over 15,000 ton, 95% of which are exported.
diameter:M8~M24(5\16~3\4)
length: 20--500(3\4"~20")
egg neck guardrail bolt (4.6,4.8,6.8,8.8,级）
waist neck guardrail bolt (4.6,4.8,6.8,8.8,级）
tenon neck guardrail bolt (4.6,4.8,6.8,8.8,级）
square neck guardrail bolt(4.6 ,4.8,6.8,8.8, 级）
diameter:M8~M24(5\16~3\4)
length: 20--500(3\4"~20")
egg neck guardrail bolt (4.6,4.8,6.8,8.8,级）
waist neck guardrail bolt (4.6,4.8,6.8,8.8,级）
tenon neck guardrail bolt (4.6,4.8,6.8,8.8,级）
square neck guardrail bolt(4.6 ,4.8,6.8,8.8, 级）
