Products characters
1.All the products produced by good quality building material factory need get through three strict inspections before packing: Raw material cutting test, Production process inspection, The finished debugging.
2.Providing customized service to apply each customer requirements, we will try our best to achieve 100% customer satisfaction.
Profile
1.High quality aluminum alloy profiles, thickness 1.2-2.0mm
2.Excellent quality thermal break aluminum profiles, thickness 1.4-3.0mm
3.PVC/UPVC material (need to be ordered)
Color
White/ Sliver / Grey / Champagne / Black / Wood grain / special color can be ordered
Glass Type
1.Single toughened glazing:6mm/8mm/10mm/12mm...
2.Double toughened glazing:5+12A+5mm/6+12A+6mm...
3.Laminated glazing:5+0.38PVB+5mm/6+0.76PVB+6mm...
4.Low-E glazing:Green/Blue/Brown/Golden...
5.Other glazing:frosted glass/crystal glass/art glass...
Mesh
1.Aluminum security mesh
2.Stainless steel security mesh
3.Solid iron security mesh
4.Mosquito net(Nylon,Stainless steel,Diamond)
Hardware
1.Germany brand
2.Japanese brand
3.Chinese top brand
Surface treatment
1.Anodizing
2.Powder coating
3.Electrophoresis
4.Fluorocarbon paint
Glass Sliding Door,Tempered Glass Sliding Door,Double Glass Sliding Door,Automatic Glass Sliding Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hongfadoor.com
Butterfly valve advantages and disadvantages introduced
Butterfly valve opening and closing pieces is a disc-shaped disc, rotating around its own axis in the valve body, so as to achieve opening and closing or regulating valve called butterfly valve. The butterfly valve fully open to the whole is usually less than 90 degrees, the butterfly valve and the butterfly rod itself is not self-locking force, in order to disc positioning, to install a worm reducer on the stem. The use of worm reducer, not only can make the disc self-locking ability to stop the butterfly plate in any position, but also to improve valve performance. Industrial butterfly valve features high temperature, high pressure range, the valve nominal diameter, the valve body made of carbon steel, the valve ring using a metal ring instead of rubber ring. Large high temperature butterfly valve welded steel manufacturing, mainly for high temperature medium smoke duct and gas pipelines. The advantages of butterfly valves are as follows: 1. Opening and closing fast and easy, labor-saving, fluid resistance is small, you can often operate. 2. Simple structure, small size, light weight. 3. Can transport mud, liquid storage in the mouth of pipe at least. 4. Low pressure, can achieve a good seal. 5. Regulate the performance. The shortcomings of the butterfly valve are as follows: 1. The working pressure and working temperature range is small. 2, poor sealing. Butterfly valve can be divided according to the structure of the bias plate, vertical plate, inclined plate and lever. According to the sealing form can be divided into more sealed and hard seal two. Rubber seals are generally used rubber ring seal, hard seal is usually used metal ring seal. According to the connection type can be divided into flange connection and the clamp connection; According to the transmission can be divided into manual, gear transmission, pneumatic, hydraulic and electric several. Butterfly valve installation and maintenance should note the following: 1. During installation, the valve should be stopped in the closed position. 2. Open position should be determined by the rotation angle of the disc. 3. Butterfly valve with bypass valve should open bypass valve before opening. 4. Should be installed according to the manufacturer's installation instructions, heavy butterfly valve, should be set up a solid foundation.