Introduction
Behind every high-performance wedge wire screen lies a precise manufacturing process.
From material selection to slot control and welding accuracy, each step directly affects filtration efficiency, strength, and service life.
In this article, we walk you through how industrial wedge wire screens are manufactured — and why manufacturing quality matters for your application.
Step 1: Raw Material Selection
Manufacturing starts with selecting the right stainless steel or alloy based on operating conditions.
Common materials include:
SS 304 / 304L – general industrial filtration
SS 316 / 316L – corrosive environments, chemical processing
Duplex 2205 – high strength and chloride resistance
Special alloys – high temperature or aggressive media
Material traceability and mill certificates are essential to ensure consistent quality.
Step 2: Profile Wire Forming
Wedge wire (also called V-wire) is cold-rolled into a precise trapezoidal profile.
Key objectives at this stage:
Uniform wire geometry
Consistent surface finish
Accurate wire height and base width
This unique profile creates a self-cleaning effect and minimizes clogging during operation.
Step 3: Slot Size Control & Assembly
Slot size is the most critical filtration parameter.
During assembly:
Profile wires are spaced according to required micron rating
Slot tolerances are controlled mechanically (±0.02 mm typical)
Support rods are aligned to maintain structural integrity
Typical slot sizes range from 0.05 mm to 2.0 mm, depending on application.
Step 4: Resistance Welding
Profile wires are resistance-welded to support rods at every intersection.
Advantages of resistance welding:
Strong, fusion-free joints
No filler material contamination
High dimensional stability
This process ensures screens can withstand high pressure, backwashing, and continuous operation.
Step 5: Finishing & Machining
After welding, screens undergo:
Cutting to length
Machining of flanges, end rings, or threaded connections
Deburring and surface polishing
Finishing is customized based on installation requirements.
Step 6: Quality Inspection
Before shipment, each wedge wire screen is inspected for:
Slot size accuracy
Straightness and roundness
Weld integrity
Surface defects
Optional inspections include PMI testing, pressure testing, and dimensional reports.
Why Manufacturing Quality Matters
Poor manufacturing can lead to:
Inconsistent filtration
Premature failure
Difficult installation
Increased downtime
A well-manufactured wedge wire screen delivers:
Stable filtration accuracy
Long service life
Lower maintenance costs
Conclusion
Wedge wire screen performance starts long before installation — it begins on the production floor.
Understanding the manufacturing process helps you choose the right supplier and ensures your filtration system operates reliably for years to come.