Product Overview
The Plunger of the high-pressure plunger pump/fracturing pump is the core reciprocating motion component at the end of the high-pressure liquid cylinder. It mainly performs high-speed reciprocating motion within the pump head body and the stuffing box (sealed box) to achieve the suction and discharge of high-pressure medium. The plungers produced by our company are made of high-quality high-strength alloy steel as the base material, and the surface is combined with advanced surface treatment processes such as thermal spray welding (such as nickel-based alloys/tungsten-chromium-cobalt alloys) or special ceramic coatings. They feature extremely high surface hardness, mirror-like ultra-low friction coefficient, as well as outstanding wear resistance, corrosion resistance and anti-abrasive erosion capabilities, which can significantly extend the service life of the plungers and packing seals.
Comparison Table of Main Types and Parameters of high-pressure Plunger Pumps/Fracturing Pump Plungers
| Plunger coating/type |
Base material and surface treatment process |
Common outer diameter specifications |
Maximum working pressure |
Applicable working conditions/medium |
Performance features and advantages |
Hot-spray welded alloy plunger
(Colmonoy / Nickel Coating) |
High-strength alloy steel matrix +
Hot spray welding of nickel-based/cobalt-based alloys (HRC 58-62) |
3.75" to 6.0"
(Such as 3-3/4", 4-1/2", 5") |
≤ 103.5 MPa
(15000 PSI) |
High-pressure fracturing, proppant mud
Cementing, clear water/oil-based media |
The mainstream standard configuration in the industry, with a firm metallurgical bond between the coating and the substrate, strong impact resistance, dense coating without pores, and excellent wear resistance. |
Zirconia ceramic plunger
(Ceramic Coated Plunger) |
Alloy steel matrix +
Thermal spraying of nano-zirconia/alumina ceramics |
3.0" to 5.5" |
≤ 140.0 MPa
(20000 PSI) |
Acid washing, strong corrosive media
High sand content and strong abrasive conditions |
It has an extremely high surface hardness (HRC 65+), an extremely low coefficient of friction, and is resistant to strong acid and alkali corrosion. It can significantly reduce heat generation and extend the service life of the packing seal. |
Super-hard tungsten carbide plunger
(Tungsten Carbide Plunger) |
High-strength forged steel +
Supersonic flame spraying of tungsten carbide (HVOF |
3.75" to 6.0" |
≤ 103.5 MPa
(15000 PSI) |
Ultra-high pressure fracturing, high-concentration proppants
Extremely harsh abrasive conditions |
It features outstanding scratch resistance and erosion resistance. Even under the scouring of extremely high-concentration fracturing sand, it can maintain a smooth surface, reducing downtime for maintenance. |
Chrome-plated/hardened plunger
(Chrome Plated / Hardened) |
High-quality alloy steel
The surface is electroplated with hard chromium/high-frequency quenched |
2.5" to 6.0" |
≤ 50.0 MPa
(7250 PSI) |
Conventional cementing and well flushing
Shallow well and medium and low pressure pumping operations |
Low processing cost, high surface finish, suitable for conventional pressure and non-strong abrasive working conditions, economical and practical. |
Compatible plunger pump/fracturing pump models
Perfectly compatible with all kinds of mainstream fracturing pumps, cementing pumps and high-pressure three-cylinder/five-cylinder plunger pumps Halliburton HT-400, SPM TWS 600, TWS 2250, QPW 1000, SPM 2500, Gardner Denver GD-2500, domestic 1000/2000/2500 type fracturing truck pump head body, etc.
Ordering Instructions
When placing an order, please provide the outer diameter of the plunger (such as 3.75" 4.5" or 5") and the total length, or directly provide the matching pump type and part number.
2. Please specify the on-site fracturing/pumping medium (such as sand concentration, acid washing medium and maximum working pressure) so that we can recommend the best surface coating material (nickel-based thermal spray welding or ceramic coating) for you.
