Hebei Chiho large welded flange tube industry: easily obtained, create a simple, low cost, widely used; but less rigid, and therefore can not be used there is supply and demand, flammable, explosive and high vacuum requirements of the chemical process piping systems and height, extremely hazardous situations. sealing surface with flat-screen and projection surface. advantages of large welded flange is to create simple, low cost, but a large amount of welding work, electrode consumption, can not withstand high temperature, high pressure, repeatedly bending and temperature fluctuations effect, generally used PN≤2.5MPa, at room temperature, the working temperature of the pipe t≤0 ℃ Hebei Chiho Pipe butt neck collar with loose flange connection defined by a pair of flanges, a washer and a number of bolts and nuts. Sales on the steel flange gasket between the two flange sealing surface, tighten the nut, the ratio of the pressure on the gasket surface deformation reaches a certain value, the surface uneven and fill the seal, the coupling does not leak tight . Welding neck collar with loose flange screw connection points (wire tapping) flange and welding flange. Low pressure small diameter wire Flange carbon steel flanges manufacturer, high pressure and low pressure large diameter are using welding flange thickness and bolt diameter and the number of different connection flange pressures are different. Depending on the level of pressure of carbon steel flanges, flange gasket materials have different large-type carbon steel flanges, from low pressure asbestos gasket, high pressure asbestos gasket to metal pads are. 1. Material classified carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, plastic, argon Ge Lek, ppc and so on. 2. production methods can be divided into forged flanges, casting flanges, welded flanges, rolled flange (large number) 3 to produce a standard can be divided into GB (Ministry of Chemical Industry, Petroleum standard, electricity standard) , American Standard, the German standard, Japanese standard, the Russian standard and so on. Large-type carbon steel flanges, Hebei Chiho (certified), carbon steel flanges provided by Chiho Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) Hebei Cangzhou, forging leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Hebei Chiho leadership with the staff warmly welcome all inquiries negotiations to create the Hebei Chiho better future.