Bimetallic Mud Pump Liners

What Is a Bimetallic Mud Pump Liner?

A bimetallic mud pump liner is a replaceable fluid-end wear component that provides the working bore for the mud pump piston. During operation, the piston reciprocates inside the liner while drilling fluid is displaced through the fluid end.

Bimetallic construction combines two different metallic materials within one liner assembly. The outer shell provides structural support, while the inner sleeve forms the wear-resistant working surface exposed to repeated piston movement and abrasive drilling fluid.

Bimetallic Construction

FH bimetallic mud pump liners use a forged carbon-steel outer shell combined with a high-carbon, high-chromium wear-resistant iron-alloy inner sleeve. The inner sleeve is produced by centrifugal casting.

This construction allows the outer shell and inner working surface to perform different functions within the same component. The high-chromium inner sleeve provides the wear surface of the liner, while the forged outer shell provides the supporting structure required for installation and operation in the mud pump fluid end.

FH Petroleum manufactures bimetallic mud pump liners for a wide range of mud pump models and replacement requirements. Because liner dimensions and interfaces depend on the corresponding pump design, replacement liners should be confirmed against the required pump model, part number and dimensional requirements.

For replacement or OEM production, customers can provide the pump model, existing part number, liner dimensions, technical drawing or an approved sample. FH can manufacture liners according to the confirmed component requirements rather than treating mud pump liners as universally interchangeable parts.

FH Petroleum manufactures mud pump liners using dedicated production equipment and controlled manufacturing processes. For bimetallic liners, production combines the forged outer shell with the centrifugally cast high-chromium inner sleeve before subsequent machining and finishing operations.

Production requirements are confirmed according to the corresponding liner design, dimensions and customer specifications. This allows FH to support both replacement-part requirements and OEM production for different mud pump applications.

FH Petroleum supports OEM production of bimetallic mud pump liners according to confirmed pump models, part numbers, drawings, samples and customer-specific requirements. Product configuration, dimensions and other technical requirements are confirmed for the corresponding application before production.

1. Composite Construction: Forged carbon-steel outer shell combined with a high-carbon, high-chromium wear-resistant inner sleeve.
2. Centrifugally Cast Inner Sleeve: The high-chromium inner sleeve is produced by centrifugal casting and forms the liner’s working wear surface.
3. High-Chromium Wear Surface: The inner sleeve contains 26–28% chromium and has a hardness of HRC 62 or above according to FH product specifications.
4. Replacement & OEM Manufacturing: Liners can be produced according to confirmed pump models, part numbers, dimensions, drawings, approved samples and customer-specific requirements.
5. Service-Life Reference: FH product literature specifies a typical service life of more than 800 operating hours under normal operating conditions. Actual service life depends on operating and maintenance conditions.

Bimetallic and ceramic liners use different material structures and are selected according to operating conditions, maintenance strategy and replacement requirements. Bimetallic liners provide a practical combination of a forged supporting shell and a high-chromium wear-resistant inner sleeve, while zirconia ceramic liners are intended for applications where extended wear life is a higher priority.

FH Petroleum supplies both bimetallic and zirconia ceramic mud pump liners. The appropriate liner type should be selected according to the pump application and confirmed operating requirements.