Three-proof cloth is widely used1

The three-proof cloth is a non-twisted roving plain weave fabric, which is an important base material for hand-laid glass fiber reinforced plastic. The strength of the three-proof cloth is mainly in the warp and weft directions of the fabric. For occasions requiring high warp or weft strength, it can also be woven into a unidirectional fabric. Warp fabric, single weft fabric. The roving is made up of parallel strands or parallel monofilaments. According to the glass composition, roving can be divided into: E-GLASS alkali glass roving and C-GLASS medium alkali glass roving. The three-proof cloth ventilation pipe is made of PVC material and spring steel ring, which can be bent at will, can be freely connected, and is lightweight; easy to carry, high temperature resistance, oleic acid resistance and flame retardant; Air leakage, wear resistance, corrosion resistance, anti-static, small wind resistance, high compressive strength and other advantages; the portable axial flow fan and the three-proof cloth duct can be easily connected, and a lifting ring is installed every about 1 meter, which can It is convenient to fix the air duct in the required position, and each end is equipped with a low-carbon steel ring, which is convenient for connection and extension. The composition of the soft bed is composed of different materials, and its quality and comfort are different. Generally, the material of the fabric soft bed can be divided into linen, three-proof leather flannel and cotton, etc., and cotton is divided into cotton and non-cotton. At the same time, in terms of grades, embroidery fabrics, satin, printing and dyeing Assorted. Of course, the price of different materials is definitely different. Generally, cotton fabrics with embroidery or jacquard are better, and their prices are also more expensive. The three-proof air distribution duct and ventilation equipment are widely used in the air supply and exhaust, and the collection and removal of smoke and dust in the harsh working environment such as machine room, basement, tunnel, municipal pipeline engineering, mechanical shipbuilding engineering, mining ventilation equipment, fire smoke exhaust and so on. . Ideal for portable exhaust fans.