Anhui Exwell New Energy Technology Co., Ltd. is a Custom Mud Pump Power End Components Manufacturer and supplier focused on the driving section of reciprocating well service pumps. Our power end range covers triplex and quintuplex configurations from 600 BHP to 2,500 BHP, engineered for acidizing, cementing, gravel packing, snubbing and hydraulic fracturing operations. We manufacture complete power end assemblies and wear components compatible with SPM, Halliburton, GD, FMC and SJS pump platforms, supporting direct replacement without field modification.
Our 20-acre production base in Wuhu, Anhui operates with 50–99 professionals and an annual production value of USD 85.7 million. We combine standardized manufacturing with drawing- or sample-based customization, so procurement and engineering teams can source a single power end assembly or a full wear-component package from one qualified supplier.
Power End Range and Configuration
We supply five core power end platforms, each matched to a specific well service duty and pump frame. The table below summarizes the standard configurations we manufacture and the applications where each unit fits.
| Model |
Configuration |
Rated Max BHP |
Gear Ratio |
Application Fit |
| HT400 |
Triplex, 8" stroke |
600 BHP (447 kW) |
8.6:1 |
Acidizing, cementing, well maintenance |
| TWS600S |
Triplex, 6" stroke |
600 BHP (447 kW) |
4.61:1 |
Gravel packing, snubbing, small-scale service |
| QWS1000 |
Quintuplex, 8" stroke |
2,250 BHP (1,641 kW) |
6.353:1 |
Hydraulic fracturing, high-pressure delivery |
| TWS2250 |
Triplex, 8" stroke |
2,250 BHP (1,865 kW) |
6.353:1 |
Fracturing, deep-well injection |
| QWS2500 |
Quintuplex, 8" stroke |
2,500 BHP (1,866 kW) |
6.353:1 |
Heavy-duty fracturing, unconventional resource development |
Each platform is manufactured with the crankshaft, connecting rods, crossheads, bearings and lubrication system as an integrated assembly. We configure the gear ratio, rod load rating and frame dimensions around the required working point, so the power end matches the fluid end and prime mover without derating.
Application Fit and Duty Selection
Power end selection starts with the well service duty, not just the horsepower rating. We match each configuration to the cyclic load profile and operating environment:
- Acidizing and cementing: HT400 and TWS600S triplex units provide the moderate-pressure, intermittent-duty performance required for well maintenance and stimulation support.
- Gravel packing and snubbing: TWS600S compact configuration suits mobile deployment and short-cycle operations where installation footprint matters.
- Hydraulic fracturing: QWS1000, TWS2250 and QWS2500 handle sustained high-pressure fluid delivery with rod load ratings up to 225,000 lbs and quintuplex configurations for smoother flow and reduced pulsation.
- Deep-well injection: TWS2250 robust design supports high-pressure injection in deep-well applications where frame rigidity and bearing life are critical.
Materials, Machining and Quality Control
We manufacture power end components from alloy steel and stainless steel grades selected for the load, fatigue and corrosion conditions of each application. Our production floor includes Czech TOS CNC boring and milling machines, Mazak horizontal boring and milling machining centers, Okuma gantry machining centers and quantitative CNC machining centers. These machines hold the geometric tolerances required for crankshaft bearing journals, crosshead bores and frame alignment surfaces.
Quality control runs from raw material entry through finished assembly. We operate a Leader CMM for high-precision geometric dimension detection, plus in-house laboratory equipment for material physical and chemical property testing and non-destructive testing. Every power end assembly undergoes multiple rounds of inspection before delivery, with 100% final inspection against customer requirements and international standards.
Customization and Direct Replacement
Our power end components are designed for direct replacement without field modification. We benchmark international brands including SPM, Halliburton, GD, FMC and SJS, providing original-quality alternative solutions for existing pump fleets. When a customer submits drawings, samples or worn parts, our technical team performs a feasibility analysis and confirms the working point before quotation.
Customization workflow:
- Customer submits drawings or samples to clarify requirements.
- Technical assessment and parameter recommendation confirm the feasible solution.
- Quotation is issued with accurate cost calculation.
- Customized sample production and sample testing confirmation.
- Standardized mass production with quality and quantity guaranteed delivery.
Integration with Fluid End and Complete Pump Systems
A power end only performs as well as its interface with the Fluid End and the complete Mud Pump assembly. We manufacture both sections in-house, so we can supply a matched power end and fluid end pair with confirmed alignment, rod load compatibility and sealing interface. For customers maintaining existing equipment, we also supply individual Spare Part items and Custom Spare Part solutions from the same production line.
Information We Use to Configure Your Solution
To prepare an accurate power end configuration and quotation, we work from the following project inputs:
- Pump model or platform (SPM, Halliburton, GD, FMC, SJS or other) and the specific power end part numbers required.
- Working pressure, flow rate and fluid type for the intended well service duty.
- Required stroke length, gear ratio and maximum rod load.
- Prime mover specifications and available input torque.
- Installation constraints, including frame dimensions, weight limits and mounting configuration.
- Drawings, samples or worn parts for reverse engineering and direct replacement confirmation.
Frequently Asked Questions
What power end models do you manufacture?
We manufacture HT400, TWS600S, QWS1000, TWS2250 and QWS2500 power end platforms, covering triplex and quintuplex configurations from 600 BHP to 2,500 BHP. Each is available as a complete assembly or as individual wear components.
Can you manufacture power end components from our drawings or samples?
Yes. Customized production is our core business. We can develop and manufacture based on the drawings or samples you provide, including reverse engineering from worn parts. Our technical team confirms feasibility and parameters before quotation.
Are your power end components direct replacements for SPM, Halliburton, GD or FMC pumps?
Yes. We benchmark international brands and design our components for direct replacement without field modification. Each model is matched to the equivalent OEM platform, such as HT400 for Halliburton, TWS600S for SPM, and QWS1000/QWS2500 for GD/SPM.
What quality control do you apply to power end assemblies?
We implement full-process quality management with inspection after each production step and 100% final inspection. Our in-house laboratory performs material physical and chemical property testing, non-destructive testing and high-precision geometric dimension detection using a Leader CMM.
How quickly can you respond to a power end inquiry?
We reply within 12 hours after receiving an inquiry. Provide the pump model, required specifications, quantities and operating conditions, and our sales team will return an accurate pricing solution.
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