Pony rod, piston rod, connection rod, clamping ring, which is corresponding to the pumps

Pony rod is manufactured by the material of ASTM5140 or ASTM4140, the premium forged alloy steel. Rod body is hard chroem platedand and the degree of hardness is HRC59-62

Piston rod is manufactured by ASTM5140, the premium forged steel. According to Custoner's different requirement, rust-resist treatmene can be Zinc-plated, chrome-plate or parkerizing treatment

Twin cylinder rod, the materials used is ASTM5140 the premuim forged steel and rod body is hard chrome plate, It has API-1#, API-3#, API-4#, API-5#, API-6#size.