Low carbon USS flat washers, typically used with Grade 8 or hardened steel bolting, are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. USS (United States Standard) flat washers have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. ASTM F844 covers the standard specifications for unhardened steel flat washers for general use. Available in zinc plated finish. Zinc plating sacrifices itself, corroding before the base material, offering added corrosion resistance.
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High temperature glass is an excellent new high temperature resistant material. It has many types, temperature range 300-1500 °C, temperature difference between cold and heat is 180 °C~1200 °C, it is industrial boiler, valve, pipeline mirror, metallurgy, chemical industry, Special glass for high temperature observation ports such as petroleum, aviation and electric power. It is an ideal product that is indispensable for industry and life.
However, for many types of high temperature resistant glass, customers sometimes do not have a good grasp of how to choose the product that suits them. I will talk about how to buy high temperature glass products based on experience.
First of all, the customer should clarify the following two concepts, and also weigh the quality of the high temperature resistant glass. There are two main technical indicators: First, the maximum heat resistance temperature is not affected by water (dry burning) for a long time. The second is how much the maximum heat-resistant temperature in the state of water contact is also called the difference between the cold and the heat fusion temperature. To purchase high temperature resistant glass, be sure to check with the manufacturer. The indicated heat resistance temperature value is: short time heat resistance temperature value? Still a long time heat resistance temperature value? this point is very important.
Secondly, before buying, it is necessary to clarify the size, thickness, pressure/compression of the glass, and whether it will encounter external environmental factors such as water and rain. It is worth noting that some high temperature resistant glass cannot be cut after molding. It is necessary to measure the size and reduce the error before ordering.
Another important point is that due to the differences in equipment, technology and raw materials of various manufacturers, the processing methods for high temperature resistant glass will be different. Therefore, similar high temperature glass products produced by different manufacturers have certain heat resistance and thermal stability. The difference in extent. Customers must choose a good manufacturer when buying high-temperature glass.
Tianjin Jintai High Temperature Glass Products Co., Ltd. is a professional manufacturer of high temperature glass and high temperature resistant glass.
Contact: Wang Lin
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