Basic introduction of joint pipe fittings

Basic introduction of joint pipe fittings

Joint fittings are also called pipe fittings, connecting parts, joint parts, and the like. In various piping systems, pipes are connected by different joint fittings to form a pipe steel. 1. Malleable cast iron (Ma Steel) pipe fittings are made of malleable cast iron and are threaded (threaded) with pipes. Working pressure is within 0.1Mpa. Its appearance is characterized by thick edges at the ends.

Four-way, used for pipe through vertical cross-connection; reduce-way four-way, used when connecting two smaller pipe diameter pipes vertically on the pipe; the center of the wire is also called inner and outer wire, inner and outer diameter, inner wire is small, outer wire Large, outer wire is connected with other pipe fittings, the inner wire is directly connected with the pipe for the variable diameter joint of the pipe; the outer screw short joint is used to connect two pipe fittings close to each other; the short pipe joint of the common lathe is used instead of The very short joint is called the pair of wires; the wire plug is also called the plug; the plug is externally threaded to block the orifice of the pipe; the joint is made up of two joints that can be fastened to each other. The mouth is composed of a set of mothers connecting the male and female mouths, and the interlocking part is padded with a rubber pad or asbestos paper pad to avoid water leakage. The joint is used for the live connection of the pipe of the same diameter in the pipe, that is, does not rotate. The pipe can also disassemble the pipe. In order to disassemble the equipment in the repair pipe program, in addition to the pipe joint installation, the joint is also essential; the root mother sew, also known as the root hoop, lock nut, with one end is a short thread buckle, the other end is a filament buckle The short pipe section (root tipless) and a root mother, plus a pipe hoop with an inner wall for the wire, constitute a filament, which acts as a detachable joint for use as a detachable live connection when used in a radiator When the heart is on, the wire pipe hoop can also be omitted; the flange, the left and right pieces are composed of one piece, and the same function as the joint. The specification is more than d50mm. Because the flanges of the large-size valves are mostly flanged, the flanges are also used for the connection of pipes and valves. 2. When steel and malleable cast iron pipe fittings are threaded, if the working pressure is high (but within 1.6Mpa), steel pipe fittings can be used. Steel pipe fittings are made of carbon steel, commonly known as wrought iron pipe fittings. It has good weldability and can be used in places where welding is required. For example, steel pipe hoops are often used as steel equipment such as boilers or water tanks. 3. The water supply cast iron pipe fittings are cast by gray cast iron. The feed water cast iron pipe fittings are of socket type and flange type. Their use is similar to that of malleable cast pipes. The main types are as follows: cross pipe, T-tube (including three-way cross) Tube, three-disc cross tube, four-cone cross tube, four-disc cross tube, double-contained T-tube, double-disc T-tube, three-cone T-tube, three-disc T-tube, double-receiving T-tube, single-container double-disc ); 90° elbow, 45° elbow; fork tube; B-tube; fire hydrant tube; casing and so on. 4. Drainage cast iron pipe fittings mainly include socket bending pipe, 90° elbow, 45° Y-shaped tee, 90° T-shaped tee, 90° TY-shaped tee, oblique cross, positive cross, TY-shaped cross tee, Reducing cross, pipe hoop, T-shaped bottle mouth tee, 45° elbow, Y-shaped reducer tee, socket sweeping port, S-shaped trap, P-shaped deposit, and floor drain.