办公室高h荡肉呻吟男男动漫,www.四虎,国产精品免费无遮挡无码永久视频,亚洲男人av天堂午夜在

Compared with pipes made of other materials, FRP pipes have the following obvious advantages: 1. FRP pipe is corrosion-resistant and pollution-free. It can resist the erosion of acid, alkali, salt, s...

Alkali free fiberglass cloth is made of glass fiber woven fabric as the base material. It is widely used in wall reinforcement materials, reinforced cement products, reinforced plastics, and rubber p...

Classification of glass fiber cloth 1. According to the composition: mainly medium alkali, non alkali and high alkali (it is to classify the components of alkali metal oxides in glass fiber), of...

Product features: 1. Excellent electrical insulation, arc resistance and leakage trace resistance. 2. Excellent mechanical strength, flame retardant and heat resistance. 3. Excellent molding process,...

The basic process of molding process is to put a certain amount of pre-treatment molding material into the preheated die, and apply higher pressure to fill the mold cavity. Under the predetermined te...

Vacuum molding is to lay the reinforcement material into the mold, cover the whole layer with a vacuum bag, seal the periphery with sealant, and then suck in the resin by vacuuming. The resin is fu...

Resin transfer molding is to place the reinforcement material between the upper and lower molds, clamp the mold, and then inject the resin under pressure. After the resin solidifies, open the mold t...

Centrifugal casting molding process. A process in which resin, glass fiber and filler are added to the rotary mold in a certain proportion, and the material is compacted and solidified by centrifuga...

The short cut glass fiber and resin are sprayed onto the surface of the mold by jet machine, and then the foam is removed and solidified by rolling.

The roving and felt are immersed in resin tank under the pulling effect of traction equipment, and then they are solidified in the heating mold, and then cut to form the final product.

The glass fiber roving impregnated with resin is wound on the revolving core mold under certain tension according to certain rules, and then solidified into products.

The mold is evenly coated with release agent and gel coat resin, and then the reinforcement material is laid. The resin mixed with curing agent is coated with pressing roller and brush to make the r...