Drum wire screen

Product Overview

This product is a stainless steel wedge wire filter element (Johnson screen).

It is mainly made of stainless steel (usually 304 or 316L), with wedge-shaped wires wound to form uniform gaps. It features a flange at one end for easy installation and an internal support structure to ensure mechanical strength.

We design it for precision filtration, and it can trap solid particles and impurities while allowing liquid or gas to pass through. We widely use it in various industries, including water treatment (for purifying drinking water and treating sewage), chemical engineering (for filtering raw materials and recovering catalysts), mining (for filtering slurry and draining underground water), and food and pharmaceutical industries (for filtering juice and medicinal liquid).

Its advantages include controllable filtration precision (gap width can be customized from several micrometers to several millimeters), strong corrosion resistance, good anti-clogging performance (easy to clean with back-washing), and high mechanical strength. These characteristics make it suitable for harsh working conditions and ensure a long service life.

Material	Stainless Steel 304, 302, 304L, 316, 316L, or as required
Filtration rate	15-800μm
OD	25.4-1200mm
Slot	0.1mm-45mm
Wire	2.0mm*30.mm,3.0mm*4.6mm,3.0mm*5.0mm
Rods	3.8mm/22, 3.8mm/32, 3.8mm/48, 3.8mm/50
Height	6-40 mm
Performance	Corrosion-resisting, Wear-resisting, Tear-resisting.

Production process:

We make the stainless steel strip gap screen—a screening and filtering device—from cold-rolled stainless steel strips. We then use automated machine tools to continuously wind and weld these strips onto support bars.

Customisation options

The minimum sieve gap can be 0.02mm: the maximum sieve gap is 20mm
The minimum support distance can be 8-10mm: the maximum support distance is 75-80mm

The cross-sectional shape and size of the sieve strip and support strip determine the overall strength and stiffness of the screen mesh. The back width of the sieve strip determines the aperture ratio of the screen gap. Different filtration and screening effects result in different particle sizes of the separated material, so you should match them reasonably according to the space.

Stainless steel Filter mesh specifications:

Sr. No.	WEDGE WIRE SCREEN Description
1	Size: Dia. 220 x 330 LG. Effective Size Of: 0.9     1.4 mm Media
2	Size: Dia. 220 x 330 LG. Effective Size Of: 0.8     0.9 mm Media
3	Size: Dia. 220 x 330 LG. Effective Size Of: 0.3     1.2 mm Media
4	Common Specification : MOC: SS 304 Flow Direction:OUT to IN Differential Pr. To: 6Kg/cm2 Withstand

Construction of SS Wedge Wire Screen:

The back width of the sieve strip determines the aperture ratio of the screen gap. Different filtration and screening effects result in different particle sizes of the separated material, so you should match them reasonably according to the space.

Available shapes	Unit/mm
	3×5  4×6  4×8
	0.9×1.9  1.19×2.24  1.8×2.75  2.4×3.5  1.8×3.1 1.8×4.5  2.28×3.56  3×6
	2.8×6.5  3×5  3×6.5  3.5×6.5  4×6.5
	2.33×3.1  2×6.5  3×6
	2.4×3.55  3.5×4  3×6.5  3×6

Stainless Steel Wedge Wire Screen is supplied with various surface profile and support profile considering design and maximum free flow area available with respect minimum withstand differential pressure. In cylinder and sheets for rotary drums and sieves.