Flange Profile（1）

Introduction

       Flange (Flange), also known as flange or flange plate. Flange parts of the tube and the tube connected to each other, connected to the pipe end; also useful in the flange on the Equipment Import and Export for the connection between the two devices, such as reducer flange. Flange connection or flange joint is three interconnected by flanges, gaskets and bolts, the seal structure as a combination of detachable connection pipe flange means a flange piping in the plumbing used in the devicemeans equipment and outlet flanges. Holes in the flange bolts so that the two flange abuts. Between the flanges with gasket seal. Flange sub-threaded connection (threaded connection) flange and welded flange and card folder flange.
Reducer flange for the connection between the connection of the motor and reducer, reducer and other equipment.

Material
        Production of materials can be divided into: WCB (Carbon Steel), LCB (low temperature carbon steel), LC3. (3.5%
Nickel steel), WC5 (1.25% Cr 0.5% Mo steel), WC9 (2.25% chromium), C5 (5% chrome% Mo), C12 (9% Cr 1% Mo), CA6NM (4 (12% chromium steel) , of CA15 (4) (12% chromium), CF8M (316 stainless steel), CF8C (347 stainless steel), CF8, (304 stainless steel), CF3 (304L stainless steel), CF3M (316L stainless steel), CN7M (alloy steel), M35-1 (Monel), N7M (the Haast nickel alloy B), CW6M (Ha Sita nickel alloy C), CY40 (Inconel alloy

Connection
        Flanged connections (flange joint) by a pair of flanges, a gasket and a number of bolts and nuts group
Percent. Gasket between the two flange sealing surface, tighten the nut on the gasket surface pressure reaches a certain value distortion, and fill the Office of the uneven surfaces of the sealing surface, the connection to not leak tight. Flange connection is a removable connection. Vessel flange and pipe flange; connected components can be divided into sub-structure type, integral flange, loose flanges and threaded flange. Common integral flange welded flange and welded flange. Less rigid welded flange for pressure p ≤ 4MPa the occasion; welded flange, also known as high-neck flange, rigid, applicable to high temperature in the pressure of the occasion. There are three type of flange sealing surface: planar sealing surface, suitable for high pressure, medium nontoxic occasions; bump sealing surface, for slightly higher pressure situations; tongue and groove sealing face, applies to flammable and explosive , toxic medium and high pressure situations

Gasket
        A plastic deformation, and has the ring of a certain strength of materials.
Most of the gasket is cut from the non-metallic plate down, or by a professional factory production of the required size, the material is asbestos rubber sheet, asbestos sheet, PTFE sheet, polyethylene board; also useful for thin sheet metal (tin,stainless steel) wrapped in asbestos and other non-metallic materials up and made of metal-clad gaskets; there is a band together around the system from the thin strip and asbestos spiral wound gasket. Ordinary rubber gasket applies to a temperature below 120 ℃ occasions; asbestos rubber gasket for steam temperature below 450 ℃, the oil temperature below 350 ° C, the pressure is lower than 5MPa occasions for general corrosive media, the most commonly used acid asbestos board.In the high-pressure equipment and piping, copper, aluminum, metal gasket on the 10th of steel, stainless steel, lens type, or other shapes. High-pressure gasket and sealing surface of the contact width is very narrow (line contact), the sealing surface and the gasket processing finish higher.
Low pressure small diameter wire, flange, high pressure and low-voltage large-diameter welded flange different pressure on the thickness of the flange and the connecting bolt diameter and the number is different.

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