Classification, maintenance and service life of stainless steel flange

DataTime:[2017-2-16]

The stainless steel flange has the threaded connection flange and the welding flange, it is a kind of dish shaped parts, in the pipeline engineering is the most common, the flange is used in pairs. In the pipeline project, the flange is mainly used for the connection of pipes. In the need to connect the pipe, a variety of installation of a flange plate, low pressure pipe can be used wire connection flange, 4 kg or more pressure on the use of welding flange. Low voltage and small diameter wire connecting flange, high pressure and low pressure and large diameter are welded flange, the thickness of the flange plate of different pressure and the connecting bolt diameter and the number is different.
Stainless steel flange is not to produce corrosion, pitting, corrosion or wear, is one of the highest strength of the materials used in building materials. Because the stainless steel has good corrosion resistance, so it can make structural components to maintain the integrity of Engineering design.
Chromium stainless steel flange is set high mechanical strength and extensibility in a body, easy processing and manufacturing of parts, and can be satisfied with architects and structural designers. All metals react with oxygen in the atmosphere to form an oxide film on the surface.
In the maintenance of the stainless steel flange is need to pay attention to some problems: long time use of stainless steel flange should be regularly inspected, often on the exposed surface shall be kept clean and remove dirt, neatly stored in the room ventilated dry place, stacked or open storage is prohibited. Keep dry and ventilated stainless steel flanges, maintain clean and tidy, with the accurate storage storage method.
When the installation is installed, the stainless steel flange can be directly arranged on the pipeline according to the connection mode, and the installation is carried out according to the position of the use. Under normal circumstances, can be installed in any location, but it is necessary to facilitate the operation of the test, pay attention to the flow of stainless steel flange should be the flow of vertical valve below the upper flow, stainless steel flange can only be installed horizontally. Stainless steel flange in the installation should pay attention to sealing, prevent leakage phenomenon, affecting the normal operation of the pipeline.
In order to extend the service life of stainless steel flange taps, and improve the machining quality of the screw threads, in which processing and production should pay attention to some matters needing attention: in the thread surface is coated with titanium nitride coating, can significantly improve the tap wear resistance, heat resistance and lubricity; appropriate to increase the quantity of shovel taps back. But should pay attention to, such as shovel back amount is too large, to have the chip tap into after angle phenomenon in the back of the knife, and tapping thread finish; appropriate to increase the tap before the angle, but it should be noted that, such as taps angle is too large, in the back of the knife easily lead to taps collapse edge and tapping thread edge.
Source: Yaang Pipe Industry Co., Limited (www.yaang.com)

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