Q:What does the Rc-RF in the flange stand for? What do they stand for?

RF indicates the sealing surface RC does not know

Q:Oil seal flange

Flange sealing surface of the three types: planar sealing surface for the pressure is not high, medium non-toxic occasions; uneven sealing surface, suitable for higher pressure situations; the sealing surface of the tenon, suitable for flammable and explosive, toxic medium and high pressure situations. A gasket is a ring made of a material that produces plastic deformation and has a definite strength. Most from the non metal plate gasket is cut down, or by professional plant size, the material for the asbestos rubber sheet, asbestos board, polyethylene plate; also useful thin metal plate (Bai Tiepi, stainless steel) asbestos nonmetal materials such as wrapping made of metal gasket; and a belt around and asbestos tape made of thin steel and the spiral wound gasket. The ordinary rubber gasket for temperature lower than 120 DEG C; asbestos rubber gasket is suitable for steam temperature lower than 450 DEG C, the oil temperature is below 350 DEG C, the pressure is lower than the 5MPa of the occasion, for general corrosive medium, is the most commonly used acid asbestos board. In high-pressure equipment and piping, copper or aluminum, steel 10, stainless steel lens or other shapes of metal gasket. The contact width of the high pressure gasket and the sealing surface is very narrow (line contact), and the sealing surface and the gasket have higher processing finish. Flange, threaded connection (wire), flange and welding flange. Low pressure small diameter wire connecting flange, high pressure and low pressure big diameter all use welding flange, different pressure flange thickness and connection bolt diameter and quantity are different. According to the different grades of pressure, the flange pad also has different materials, from low pressure asbestos pad, high pressure asbestos pad to metal pad. 1. to classified material of carbon steel, cast steel, alloy steel, stainless steel, copper, plastic, Aluminum Alloy, argon Ge Lek, PPC etc..

Q:DN200 how many screws are there in the weld flange?

DN200 welding flange has 8 and 12 screw holes two kinds.According to JB/T81-59 standard:MPa0.6 below, the outer diameter 315mm plate thickness 22mm Phi 18 hole, 8 hole center Phi 280MPa1,0., the outer diameter 335mm plate thickness 24mm Phi 23 hole, 8 hole center Phi 295MPa1.6, the outer diameter 335mm plate thickness 30mm Phi 23 hole, 12 hole center Phi 295

Q:Dn is 250, Pn25 flange, what is the hole distance?

Flange center hole distance d1=370mmFlange diameter D=425Aperture 30Bolt M27

Q:Introduction of flange

Flanges (Flange), also called flanges, flanges, or flanges. A flange is a part that is connected between the pipe and the pipe, used for the connection between the ends of the pipe. It is also used for the flange on the entrance and exit of the equipment. It is used for the connection between the two devices, such as the reducer flange. Flange connection or flange joint means that the flange, the shim and the bolt are mutually connected as a group of three detachable sealing structures.

Q:What's the flange? What is its structure and function?

Water pump and valve, and in the pipe connection, these equipment parts of the equipment also made corresponding flange shape, also known as flange connection. Any connecting parts that are bolted and closed in the vicinity of the two planes are generally referred to as flanges, such as the connections of the ventilation ducts, which can be called flanges". However, this connection is only part of a device, such as flanges and pumps connected, it is not good to call the water pump flange parts". Relatively small, such as valves, can be called flanges".Reducer flange for motor and reducer connection, as well as reducer and other equipment between the connection.

Q:Flange specification PL80-1.6RF

This is the standard method of marking flange, welding plate steel pipe flanges, standard number: HG20593-1997PL is the flange type code, is the type of welding means;

Q:Flange PL40 (B)What does PL40 mean in flange PL40 (B) -1.6RF304HG20593-97?

HG20592-97 is the Ministry of chemical industry standard "welding flange plate steel pipe flanges" (European system), PL refers to the type of flange welding plate flange, (B) refers to the application of the pipe diameter B series (Metric), flange diameter DN40 nominal diameter is 46mm, with a 45mm diameter steel pipe.

Q:Is the flange fitted with a flange?

Flanges (Flange), also called flanges, flanges, or flanges. The flange is a connecting part between the shaft and the shaft, used for the connection between the ends of the pipe. It is also used for the flange on the entrance and exit of the equipment. It is used for the connection between the two devices, such as the reducer flange. Flange connection or flange joint means that the flange, the shim and the bolt are mutually connected as a group of three detachable sealing structures.

Q:What are the common materials and grades of aluminum alloy flanges?

Melting point 660 DEG C. Boiling point 2327 DEG C. Aluminum is the third largest in the earth's crust, second only to oxygen and silicon, and is the most abundant metal element in the earth's crust. The development of the three important industries, aviation, architecture and automobile, requires that the material characteristics have the unique properties of aluminum and its alloys, which will greatly benefit the production and application of the new metal aluminum. Applications are very extensive.