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Our various fluid end parts are produced according to API SPEC 7K standard. Dainty materials, excellent manufacture, resistant to corrosion and tarnishing, long service life, safe and reliable.


1、Module Screw

The material of module bolt is 40 Cr or 42CrMo. Our module bolt is made via tempering. It has high tensile strength and comply with API standard.


2、Snap spring and spring

The material is 60Si2Mn or 65Mn. The surface is zinc-plated or blacken treatment. Our product have good flexibility, rust protection and long service life.


The material is 40Cr. Our locknut is made via heat treatment. Nylon against pine circle is pressed into nut by mould. Anti-loosening property is good.