All kinds of flange that is fit to rubber joint.
Rubber joint supporting cast steel flange:
First look at the size of the flange is reasonable and the working pressure is correct, and mainly is the screw hole number, see if the processing surface is smooth, whether to have trachoma, flange edge chamfer whether level off, the flange hole is coarse, sealing surface water line whether even whether beautiful, measure with a caliper all size is qualified Especially the connection or welding size to distinguish between the forging and casting is generally difficult, generally heavier than casting forging, of course, this won't know until you compare.General casting forging is not be trachoma will have trachoma If the hole is not on the flange machining hole and very smooth it is precision casting.
Rubber joint forging flange:
Is on the basis of cast steel flange forging flange invention into production, the intensity is much higher than cast steel flange.Pipe and pipe connected parts, connection in the pipe end.The forging flange hole, two flange bolt that even tight.The forging flange gasket seal.The forging flange pipe fittings to the forging flange pipe fittings.It can be made of casting and become, also can be made up of threaded connection or welding.Flange connection by a flange, a gasket and a number of bolt and nut.The gasket in between the two flange sealing surface and tighten nut, washer on the surface of a pressure deformation after reaching a certain value, fill and seal surface uneven, not connected closely.Flange connection is a detachable connection.According to the connected components of the flange and pipe flange can be divided into the container.According to the structure, have integral flange, flange and threaded flange.Common integral flange are flat welding flange and butt welding flange.Flat welding forging flange of the poor rigidity, suitable for pressure p 4 mpa occasions or less;Butt welding flange is also called the high neck flange, large rigidity, suitable for the occasion of high pressure and temperature.There are three kinds of forging flange sealing surface type: planar sealing surface, suitable for the occasion of pressure is not high, medium non-toxic;Concave-convex sealing surface, suitable for pressure slightly higher occasion;Mortise sealing surface, suitable for flammable, explosive, toxic medium and high pressure situation.Gasket is a kind of can produce plastic deformation, and has certain strength rings made of materials.Most gaskets from non-metallic plate cutting down, or produced by professional factory in accordance with the provisions, the size, the material of asbestos rubber sheet, asbestos board, PE board, etc.;Also useful sheet metal, such as asbestos made of nonmetallic material wrapped package metal gasket;Another with steelskin belt with asbestos tape winding of spiral wound gasket.Ordinary rubber gasket is suitable for the occasion of temperature below 120 ℃;Asbestos rubber gasket suitable for vapor temperature below 450 ℃, the oil temperature is below 350 ℃, pressure is lower than 5 mpa, for general corrosive medium, the most commonly used is acid-proof asbestos board.In high voltage equipment and pipelines, using 10 copper, aluminum, steel, stainless steel type lens or other shaped metal gasket.High pressure washers and sealing surface contact width is very narrow, sealing surface finish with gasket processing is higher.More products consulting please log in the net.