FAQ

Under ISO 9044, mesh count is the number of openings per inch (25.4 mm), while aperture is the clear opening after subtracting wire diameter. A practical formula is: aperture = 25.4 / mesh count - wire diameter (mm). At the same mesh count, finer wire gives a larger aperture and higher open area but lower strength. In selection work, an aperture around 1.2-1.5 times the material D90 is a reasonable starting point for balancing throughput and anti-blinding performance.

Yes. We support custom sizing, edging, bending, punching, tension hooks, and irregular frame welding based on equipment drawings. If you provide outer dimensions and the mounting method, we can usually make a 1:1 matching screen. Custom product can be built to GB/T 5330-2003 or ISO 9044:1999 requirements, and inspection reports can be issued when needed.

Both standards define test-sieve requirements, but ASTM E11 uses an inch-based designation system while ISO 3310-1 uses preferred metric aperture series. In export projects, confirm which standard the equipment or customer expects. If both are required, dual-standard compliant product can be supplied.

The main decision factors are chloride concentration and pH. Grade 304 fits general food, chemical, and water-treatment service. Grade 316L adds molybdenum and is a safer choice for coastal use, acidic coal-washing liquids, and pharmaceutical duties. As a rule of thumb, when chloride rises above about 200 ppm or organic acids are present, 316L is usually preferred.

For dry, high-impact aggregate screening, 65Mn spring steel woven mesh or heavy crimped mesh is usually the best fit because hardness and abrasion resistance matter most. For wet coal washing and dewatering, welded slot screens in SUS316L are more suitable because high open area, anti-blinding behavior, and acid corrosion resistance become the key priorities.

Polyurethane performs best in wet fine screening, low-noise plants, and duties where long wear life matters most. Metal mesh remains the better choice when temperature exceeds 80°C, organic solvents are present, very tight test-sieve tolerances are required, or large lumps create heavy impact loading.

Yes. We support edging, punched discs, multilayer laminates, and surface finishing such as electropolishing or galvanizing. Fabricated parts can be made to drawing or sample, and critical tolerances can reference ISO 9044 or another agreed specification.

The difference is structural. V-wire welded slot screens create a tapered opening that improves anti-pegging performance and usually delivers higher open area than woven mesh at the same nominal slot size. Their welded support structure also holds geometry more reliably under high-frequency vibration.

A workable RFQ should include product type, material grade, aperture or mesh count, wire diameter, size, and quantity. Duty conditions, equipment model, mounting method, applicable standards, and drawings or sample photos will make the quotation more accurate and faster.

Price mainly depends on material grade, the wire diameter and aperture combination, secondary fabrication steps, purchase volume, and delivery urgency. Fine dense mesh, premium stainless grades, complicated fabrication, and rush scheduling all increase cost.

Typical lead times are about 3-5 working days for standard stainless woven mesh, 5-10 days for 65Mn woven mesh or crimped mesh, 7-15 days for welded slot screens, and 10-20 days for polyurethane modular panels. Complex irregular parts should be confirmed case by case.

Heavy-duty screens such as mining welded slot screens or large-aperture 65Mn crimped mesh usually require 7-20 working days, depending on specification and production loading. Projects involving new molds or large order quantities need separate confirmation.

Yes. Standard stock items can usually be sampled directly, and custom parts can go through small-batch trial production after drawings or samples are confirmed. To request a sample, submit the requirement through the inquiry page and clearly note that a sample is needed.

Yes, but drawings and process requirements must be confirmed first. Standard aperture shapes can often use existing tooling, while a new irregular aperture may require separate tooling evaluation. Trial parts still need dimensional, aperture, and fit-up checks before mass production is approved.