Reliable Solutions for Global Oilfield Equipment Needs
With over 30 years of specialization in mud pump liners and fluid end components, LONGCHAO provides comprehensive OEM and customized solutions for drilling contractors worldwide.
100% interchangeable with GARDNER DENVER,EMSCO, NATIONAL,DRILLMEC,WIRTH...
We supply complete fluid end parts including pistons, valves, seats, gaskets, and modules.
Tailored product development for extreme operating conditions, including high-pressure and high-temperature drilling environments.
Why Choose LONGCHAO
With over 30 years of specialization in mud pump liner manufacturing, LONGCHAO is committed to providing high-performance, OEM-compatible solutions trusted by top drilling contractors around the world.
We have successfully supplied more than 1 million pump liners to clients across 30+ countries.
Our liners are engineered to match OEM standards, including Gardner Denver, BOMCO, and more.
All components are manufactured and tested internally to ensure high consistency and durability.
3000pcs monthly output to meet urgent and bulk orders.

Trusted by Drilling Contractors Worldwide
For over 30 years, LONGCHAO has been delivering precision-engineered mud pump liners and OEM fluid end parts to oilfields across the globe. We are proud to be a long-term partner to hundreds of drilling companies in over 30 countries.
Fully interchangeable with top brands like Gardner Denver, BOMCO, and Russian models.
Complete sets including pistons, valves, seats, and wear-resistant accessories.
” LONGCHAO helped us cut downtime by 40% with their fast delivery and high-precision liners. They’re now our go-to supplier. “
Featured Service Products
Designed for durability and fluid sealing under high-pressure drilling conditions. Available in bonded urethane, rubber, and polyurethane formulations.





Frequently Asked Questions
Q1: Are your mud pump liners compatible with OEM brands?
Yes. Our liners are fully interchangeable with OEM pumps such as Gardner Denver, National, BOMCO, EMSCO, IDECO, and Russian pump models.
Q2: What materials are used in your mud pump liners?
We offer bi-metal liner and zirconia ceramic liner depending on your drilling conditions. Outer hull is forged, inner sleeve for bi-metal liner is casting by high chromium, and inner sleeve for ceramic liner is zirconia with different content.
Q3: Do you support custom orders or OEM branding?
Absolutely. We provide customized production, OEM labeling, and packaging services tailored to your specifications and branding requirements.
Q4: What is your minimum order quantity (MOQ)?
For standard models, no MOQ; For custom-designed liners, MOQ may vary depending on technical specifications.
Q5: How fast can you ship?
3000pcs monthly output to meet your demand, we can dispatch most order within 7-15 working days ,depending on volume and destination.