Bolian Filtration Solutions Co., Ltd.

Filter Fabric Necessary Parameters


Ingredient: Polypropylene(PP); Polyester(PET); Polyamide(PA).

Fabric structure: Plain, twill, satin, and double weaves.



Unit: Domestic commonly used-nds/10cm; foreign commonly used-ends/inch.

Conversion: ends/10cm=0.254 ends/inch



Domestic commonly used g/m2; foreign commonly used oz/yd2;

1g/m2=0.03oz/ yd2

Test method:

①Cut a fabric sample

②Measure and calculate the area

③Weigh the sample

④Calculation: grams=weight/area

Industry-standard tolerance: weight:g/m2±5%





Unit: Domestic commonly used mm, foreign commonly used μm;1mm=1000μm

Measurement method: Multi-site testing and take the average value.



Air permeability

Pay attention to the testing condition.

1. Domestic commonly used L/m2/s@test pressure 200pa, test area 20cm2;

2. European commonly used L/dm2/min=dm2/min@test pressure 200pa, test area 20cm2;

3. American commonly used cfm@test pressure 125pa, test area 38cm2.

Based on the actual measurement: 1L/m2/s=0.6L/dm2/min=0.197cfm

Measurement method: Air permeability test equipment

Industry-standard tolerance: Multi-filament cloth±20%; mono-filament cloth±25%


Breaking strength:

Domestic industry standard:N@5*20cm(test area); foreign commonly used:KN/M.

Conversion: Theoretical value 50N/5cm=KN/M, based on the actual measurement.


As one of the leading filter cloth manufacturers, Filtration Solutions has been in the leading position in developing high-quality types of filter cloth and is one of the leading experts in industrial filter cloth in China. We have extensive experience and technical resources in liquid-solid separation, advanced production processes, and excellent services. In recent years, we have been committed to scientific research and construction. Our new filtration cloth, including forming belt, filter cloth for the lithium industry and phosphoric acid, and electrolytic diaphragm cloth, have entered the market in 2022. These high-quality products have been highly recognized by both domestic and international markets.