QWS2800 Stainless Steel Fluid Ends

QWS2800 Stainless Steel Fluid End Assembly
Practical high-pressure and high-emission, made of 15-5PH and 13-8 stainless steel.
Optimized smelting: The medium frequency furnace IM+ACD+LF+VD+ESR effectively controls the ferrite ≤3%.
Optimize the forging and heat treatment processes; The single-piece production with three piers and three pulls is adopted to ensure stress relief and aging, as well as uniform and refined microstructure.
Product structure optimization: This product is practically driven by an electric drive for fracturing, high stroke, high pressure, and large displacement. The slot type was improved to the lantern type, which, is to the stress concentration of the product, enhances the fatigue resistance of the product, and extends the service life by ≥35%.
The inner cavity strengthening treatment reduces the mechanical stress in the product's inner cavity. The thermal stress increases by 35%, and the inner cavity surface reaches high hardness, achieving wear-resistant and corrosion-resistant effects, significantly extending the product's service life by more than 30%.
The wide range of matching types and the design of size accessories meet various operational requirements.
It meets the plunger sizes of 3.75", 4", 4.5", etc.

Product Information

Technical Parameters

Parameter	Value
Maximum braking power	2,800HP (2,088KW)
Maximum load on the connecting rod	229,305lbf (1,020KN)
Stroke	8" (203.2mm)
Transmission mode	Double - round - column helical gear pair transmission
Gear ratio	6.333:1
Dimensions	91.8891.4247.44in (2,3212,3221,205)
Weight	20,900lbs (9,500kg)

Introduction to the Hydraulic End

Product Name	Product Model	Product Material	Main Specifications	External Dimensions/mm
Hydraulic End Casing/Hydraulic End Assembly	QWS2800	4330V/15 - 5PH	3.75"/4"/4.5"	1600429616

QWS2800 Hydraulic End External Dimensions and Structure

QWS2800 Stainless Steel Fluid End is a core component specially developed for high-pressure and high-emission working conditions. With its excellent materials and innovative processes, it has become an ideal choice for harsh working environments. Its main body is made of 15-5PH and 13-8 stainless steel. These two high-performance stainless steels give the product excellent high-pressure resistance and corrosion resistance, and are perfectly adapted to the needs of high-stroke and large-displacement operations.

In the manufacturing process, this component integrates multiple cutting-edge processes: the composite process of medium-frequency furnace (IM) + ACD + LF + VD + ESR is used in the smelting stage to strictly control the ferrite content within 3% to ensure material purity and structural stability; the "three-pier three-draw" single-piece production mode is innovatively applied in the forging process, combined with precise stress relief and aging heat treatment to achieve uniform and refined organization, laying a solid foundation for product performance.

In terms of structural design, QWS2800 has undergone a breakthrough upgrade - the traditional slot-type structure has been improved to a lantern-type structure, which thoroughly optimizes the stress distribution, greatly improves fatigue resistance, and extends the service life by more than 35%. After the inner cavity is specially strengthened, the mechanical stress is significantly reduced, and a hard, wear-resistant layer is formed on the surface. At the same time, the corrosion resistance is enhanced. Combined with the characteristics of 35% improvement in thermal stress stability, the service life is further extended by more than 30%, and the double guarantee achieves a leap in durability.

This component has a wide range of adaptability and is compatible with a variety of plunger sizes, such as 3.75 inches, 4 inches, and 4.5 inches. The rich accessory design meets the needs of different operating scenarios and provides efficient and reliable fluid end solutions for high-pressure operations such as electric drive fracturing.