QWS5000 Stainless Steel Fluid Ends

QWS5000 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 reduces 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.

Product Information

Specification parameters

Maximum input power:	5000 HP (1902KW-3730KW)
Max RPM:	300 RPM
Plunger:	5
Stroke Length:	11"
Lever Load:	250000
Pump Weight:	26000LB
Gear Ratio:	7.525:1 Optimized for diesel and dual-fuel applications
	11:23 Optimization applies to electric or turbine-driven applications

Plunger Diameter		Pump Displacement		7.5255:1 rotational speed		11.232:1 rotational speed		7.5255:1 rotational speed		11.232:1 rotational speed		7.5255:1 rotational speed		11.232:1 rotational speed		7.5255:1 rotational speed		11.232:1 rotational speed		7.5255:1 rotational speed		11.232:1 rotational speed
				376		562		753		1123		1505		2246		1881		2808		2258		3370
				50				100				200				100				200
in.	mm.	Gallons		GPM	㎡/hr	PSI	bar	GPM	㎡/hr	PSI	bar	GPM	㎡/hr	PSI	bar	GPM	㎡/hr	PSI	bar	GPM	㎡/hr	PSI	bar
4	102	2.992	0.0113	150	34	19894	1372	299	68	19894	1372	598	136	12889	889	748	170	10312	711	898	204	8593	592
4.5	114	3.787	0.0143	189	43	15719	1084	379	86	15719	1084	757	172	10184	702	947	215	8147	562	1136	258	6789	468
5	127	4.675	0.0177	234	53	12732	878	467	106	12732	878	935	212	8249	569	1169	265	6599	455	1402	319	5499	379
5.5	140	5.657	0.0214	283	64	10523	725	566	128	10523	725	1131	257	6818	470	1414	321	5454	376	1697	385	4545	313
5.75	146	6.183	0.0234	309	70	9628	664	618	140	9628	664	1237	281	6238	430	1546	351	4990	344	1855	421	4158	287
6	152	6.732	0.0255	337	76	8842	610	673	153	8842	610	1346	306	5729	395	1683	382	4583	316	2020	459	3819	263
6.5	165	7.901	0.0299	395	90	7534	519	790	179	7534	519	1580	359	4881	337	1975	449	3905	269	2370	538	3254	224

QWS5000 Stainless Steel Fluid End is designed for high-pressure and high-discharge conditions and is the core component of electric-driven fracturing equipment. It is made of 15-5PH and 13-8 martensitic precipitation hardened stainless steel. With its high strength and corrosion resistance, it can easily cope with high-pressure and high-discharge operating environments.

In the smelting process, the IM+ACD+LF+VD+ESR process of the medium-frequency furnace is used to deeply purify the molten steel, and the ferrite content is strictly controlled within 3%, ensuring the stability of the material structure and laying a solid foundation for the performance of the equipment.

The forging and heat treatment processes are also refined, using the "three-pier and three-draw" single-piece production mode, combined with stress relief and aging treatment, to effectively eliminate internal stress, refine the grain structure, and significantly improve the mechanical properties of the components.

In terms of structure, the traditional slot design is upgraded to a lantern type, which greatly reduces stress concentration, enhances fatigue resistance, and extends the service life by more than 35%. After the inner cavity is strengthened, the mechanical stress is reduced, the thermal stress is increased by 35%, and a high hardness layer is formed on the surface, which significantly improves the wear resistance and corrosion resistance, and increases the service life by more than 30%.

In addition, the wide range of matching and size designs can meet a variety of operating needs, making it an ideal choice for high-pressure and high-emission scenarios.