Flange basic introduction-phase 8
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Pipe flanges and their gaskets and fasteners are collectively referred to as flange joints.
Flange joint is a kind of component which is widely used in engineering design and involves a wide range of areas. It is an essential part of pipe design and pipe fitting valves, and it is also a necessary component in equipment and equipment components (such as manholes, sight glasses, liquid level gauges, etc.). In addition, other professions such as industrial furnaces, thermal engineering, water supply and drainage, heating and ventilation, automatic control, etc., also often use flange joints.
Forged steel, WCB carbon steel, stainless steel, 316L, 316, 304L, 304, 321, chromium molybdenum steel, chromium molybdenum vanadium steel, molybdenum dititanium, rubber lined, fluorine lined material.
Flat welded flange, neck flange, butt welded flange, ring joint flange, socket flange, and blind plate, etc. Implementation standards: GB series (national standard), JB series (Mechanical department), HG series (chemical department), ASME B16.5 (American standard), BS4504 (British standard), DIN (German standard), JIS (Japanese standard).
There are two main international pipe flange standards, namely, the European pipe flange system represented by the German DIN(including the former Soviet Union) and the American pipe flange system represented by the American ANSI pipe flange.
Flat welded ring loose flange- one of 12 kinds of flanges
Flat welded ring loose flange is a movable flange. Directly connected with the pipeline and equipment in the project with bolts. The purpose of using the flat welding ring loose sleeve flange is generally to save information, its structure is divided into two parts, the pipe part and pipe connection, one end made of flanging, flanging part set on the edge.
Advantages:
1. Easy to weld or easy to process or need large strength, such as plastic pipe, glass steel pipe and so on.
2. Easy to construction, such as the connection flange bolt hole corresponding to the convenient to find the right or prevent the future replacement of equipment flange bolt hole changes.
3. When the price is noble, save money. When the pipe material is special, the cost of welding the flange of the same material is high.
Disadvantages: Low acceptance pressure. Low strength at the weld ring (especially if the thickness is less than 3mm)
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