Carbon steel flange is a kind of disc parts, the most common in pipeline engineering. Carbon steel flanges threaded connection (screwed) flange and welding flange. Low pressure small diameter wire connect flange, high pressure and low pressure of large diameter used welding flange, the thickness of the different pressure of carbon steel flange and the connection bolt diameter and the number is different. In the context of flange connection way that we can learn, flange primarily in pipeline engineering, used for the connection between the pipe. In need of connecting pipes and all kinds of installation of carbon steel flanges, low pressure pipe flange can use silk, the use of more than 4 kg pressure welding flange. By sealing point between two pieces of carbon steel flange and bolt fastening.

Depending on the pressure, the thickness of the carbon steel flange products and use of bolt are also different. When water pump and valve, and pipe connection, the local equipment, also made the corresponding flange shape, also known as flange connection. Where there are two surfaces in the surrounding use of bolt connection closed connection parts at the same time, generally referred to as the \"flange\", such as ventilation pipe connections, this kind of parts can be called \"flange parts\". But this connection is only a partial equipment, such as flange connection and water pumps, not good called the pump flange parts \". Relatively small, such as valve can call \"flange parts\".

Carbon steel flange of main purpose is to:

1, the pipeline of pipeline connection and keep the sealing property;

2, easy to change line a long period;

3, easy to disassemble pipeline;

4, easy to pipeline closed a long period.

Carbon steel flange is two large diameter pipe connection device, usually two flange and number of the bolt. Carbon steel flange is made of carbon steel flange. Low carbon steel and plastic good strength is low, after adding suitable amount of carbon becomes hard, plastic lower strength enhancement. Flange connection may need to bear very high tensile, compression, torsion, shear strength, the carbon steel flange is a better choice. Commonly used on the pipeline, in that case, the pipeline on both sides of the loose bolts can rotate, tighten again can the dismantling of piping.

Carbon steel and cast iron pipe flange connection method and the most simple method of connection between steel tube. While blind flange plate can be used to check the mouth say. In addition, flange connection or used for pipe diameter from phi 50-315 - mm pipe connection. Flange connection method is used on low pressure pipeline detachable fittings.