2022-04-19
Classification and brief introduction of flanges
Flange basic introduction
Flange, also known as flange flange or flange. Flanges are the interconnected parts between shafts and are used for the connection between pipe ends; they are also used as flanges on the inlet and outlet of equipment for the connection between two equipment, such as reducer flanges. Flange joint is an appliance used for flange sealing.
1. Application:
Flange joint is a kind of component that is extremely commonly used in engineering design and involves a wide range of surfaces. It is an essential part of piping design, pipe fittings and valves, and an essential component of equipment and equipment parts (such as manholes, sight glass 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.
2. Material:
Forged steel, WCB carbon steel, stainless steel, 316L, 316, 304L, 304, 321, chrome molybdenum steel, chrome molybdenum vanadium steel, molybdenum titanium, rubber-lined, fluorine-lined material.
10 Flange Types and Features
1. Plate flat welding flange
Plate type flat welding flange (chemical standard HG/T20592, national standard GB/T9119, mechanical JB/T81).
advantage:
The material is convenient to obtain, the manufacture is simple, the cost is low, and the utility model is widely used.
shortcoming:
The rigidity is poor, so it should not be used in chemical process piping systems with supply and demand, flammable, explosive and high vacuum requirements and in highly and extremely hazardous occasions.
2. Flat welding flange with neck
Flat welding flange with neck belongs to the national standard flange standard system. It is one of the manifestations of national standard flange (also known as GB flange).
advantage:
On-site installation is more convenient, and the