(1) body material is 45# steel and screw pin is 40Cr.
(2)Size:all size
(3)Surface:electro galvanize;hot dip galvanize or on special requirement.
(4)Special specification and marks can be made acording to customers reuirements.
(5)Treatment:drop forged;quenched and tempered,with alloy pins
(6)Meet the requirement of Federal Specification RR-C-271D Type IVA,Grade A,Class 2.
•Maximum proof load is 2.2 times the working load limited.
•Maximum ultimate load is 6 times the working load limited
•Professional manufacturer rigging factory and strict procedure.