QWS2500 Stainless Steel Fluid End

What is a Stainless Steel Fluid End?

What Material Grades are Available for Your Stainless Steel Fluid End?

What is the Difference Between Stainless Steel Fluid Ends and Carbon Steel Fluid Ends?

What is the Life Span of Stainless Steel Fluid Ends Compared to Carbon Steel Fluid Ends?

Can Stainless Steel Fluid End Withstand High Pressures and Highly Corrosive Fluids?

Are Stainless Steel Fluid Ends Fatigue Cracking Resistant?

Are Stainless Steel Fluid Ends Built to Withstand Washout?

Do you Need to Worry About Cavitations in Your Stainless Steel Fluid End?

Are stainless steel fluid end modules easy to maintain?

Can Stainless Steel Fluid End Minimize Flexing Stress Amplitude for Improved Pressure Cycles?

How do you Prevent Sand Packing in Stainless Steel Fluid End?

What Stainless Steel Fluid Ends does TianyuMfg Manufacture?

Frac pump fluid end generally is made of high-quality forging block. Most often, the fluid end modules are made of forged carbon steel and stainless steel. To gain greater strength and reliability,  forged stainless steel was first introduced to the market in 2012.

Compared with carbon steel fluid end, Stainless steel fluid ends perform better for their strength, consistency, and quality in combat corrosion and consistent fracturing jobs. The use of stainless steel instead of carbon steel has enhanced fluid end frac pump life by three to four times. However, the figure is not exact because the lifespan varies depending on the use.

At TianyuMfg, we manufacture mainly two standard grades of stainless steel fluid ends. These two materials can meet or exceed your requirements in well service applications and fracturing performance.

These two material grades are precipitation hardening stainless steel: 17-4PH and 15-5 VAR.

Stainless steel fluid ends and carbon steel fluid ends have the most obvious differences in the performance lifetime and also the prices.

Given the differences in the materials themselves, stainless steel fluid ends offered better microstructure and grain size, the strength, and ductility of stainless steel are also improved to provide for stronger fatigue resistance. The service lifetime of stainless steel fluid end could be three or four times of carbon steel made fluid end, which the price is less than doubled price of the latter.

TianyuMfg carbon steel Triplex (2250) and Quint (2500) typically run 500 to 800 pump hours. Stress corrosion cracking might potentially impact anything beyond that. Under the cyclical pressure of the application, this would result in fluid end fatigue failure.

When compared to carbon steel, stainless steel frac fluid-ends have a 2X projected performance life due to their material properties and improved strength. TianyuMfg Stainless Steel ranges from 1,200 to 2,000 plus pump hours. The maximum record that we’ve got so far from our clients is 3680hours in Midland, Texas.

However, life expectancy is affected by multiple conditions, which may include Plunger bore size; smaller bores tend to last longer.

The pressure the fluid end is typically run at also has a definite impact; higher pressure shortens fluid end life than lower pressure service.

Another determinant is the number of hours per day it is pumped, pressure and cycles are the enemies of fluid end life.

And lastly, pumping water, KCL water, or Acid all add to corrosion fatigue of the metal.

The corrosion resistance, ductility, and high strength of stainless steel alloys are well known.

TianyuMfg Stainless Steel Fluid Ends are made with special metallurgy that increases yield strength and corrosion resistance. TianyuMfg stainless steel fluid ends feature optimum corrosion resistance, which reduces cracking and improves overall longevity, especially in recycled water applications.

Separations or cracks in the fluid end material can be caused by excessive cavitation, fatigue, or impact from external objects. Sand packing and operation outside of pump design parameters might also be problematic.

Deburring shot peening and focused material work-hardening are all techniques that help extend fluid end life. To avoid premature cracking, we additionally use material with a higher yield strength than the industry standard.

Fatigue, cracking, and eventual failure are unavoidable. Fluid ends can, however, be designed to withstand additional fatigue. TianyuMfg stainless steel fluid ends provide just that.

Large amounts of fluid within the block erode sealing surfaces, limiting pressure buildup at the fluid end. Abrasive well stimulation fluids, acids, and higher-strength proppant are more likely to cause this. Another issue is poor maintenance, such as faulty valve and seat installation.

We exclusively utilize top-quality steel that has been forged to the strictest cleanliness standards, as well as high-strength parts that extend the life of the fluid end.

When well-stimulation fluids are driven to rapid pressure variations, cavities may build up in the liquid at low pressures and collapse at high pressures. Washout from continuous cavitation can cause premature breakdown.

TianyuMfg high-flow parts (valves and seats) provide superior flow characteristics within the fluid end during use. This ensures that well stimulation fluids flow consistently at changing pressures.

Since spare components are readily available and the damaged cavities may be replaced, Frac fluid ends can be conveniently maintained and serviced right at the workplace. If necessary, a heat and carbide treatment can be used to extend the part’s service life.

Stainless steel fluid ends are more durable and resist fatigue cracking, which helps to decrease erosion. Because of the natural break in the stress transfer, the approach improves pressure cycles and reduces cylinder stress. Improved pressure cycles due to reduced flexing stress amplitude.

Inconsistent well stimulation fluid and proppant distribution from the blender, loss of adequate proppant suspension in fluid during operation, and pony rod or power end breakdowns can all result from excessive proppant build-up in a fluid end’s intersecting bore.

Our design eliminates turbulent flow around the valves and allows for unhindered flow. This greatly lowers proppant settling, which can result in sand build-up.

TianyuMfg manufacture stainless steel fluid ends for the following well service pumps, 100% compatible and high quality.

WEIR SPM TWS600, all plunger sizes

WEIR SPM TWS2250, all plunger sizes

WEIR SPM QWS1000, all plunger sizes

WEIR SPM QWS2500, all plunger sizes

WEIR SPM QWS2800, all plunger sizes

FMC Pumps, GD Pumps, etc

Contact us to discuss the custom requirements of your stainless steel fluid ends.