Yes, it is called a cast iron pipe installation tool, also called a cast iron tee.

The connection methods between cast iron tees and pipes include: direct welding (the most common method), flange connection, threaded connection, and socket connection, etc. A type of connecting pipe fitting commonly used in pipeline installation, used for connections outside pipeline bends. The materials of cast iron tee include cast iron, stainless steel, alloy steel, forgeable cast iron, carbon steel, etc.

1. Classification of cast iron tees: Classification of cast iron tees: reducing tees, Y-shaped tees, high-pressure tees, etc.

1. Divided by material: carbon Steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, etc.

2. According to the production method, it can be divided into: pushing, pressing, forging, casting, etc.

2. The process of cast iron tee: Cast iron tee is a pipe fitting used at the branch of pipeline. For the use of seamless pipes to manufacture cast iron tees, the currently commonly used processes are hydraulic bulging and hot press forming.

1. Hydraulic bulging

Hydraulic bulging of cast iron tees is a forming process that expands branch pipes through axial compensation of metal materials. The process is to use a special hydraulic press to inject liquid into the tube blank with the same diameter as the cast iron tee, and squeeze the tube blank through the synchronous centering movement of the two horizontal side cylinders of the hydraulic press. The volume of the tube blank becomes smaller after being extruded, and the tube blank becomes smaller. The pressure of the liquid inside increases as the volume of the tube becomes smaller.

When the pressure required for the expansion of the cast iron tee branch is reached, the metal material flows along the inner cavity of the mold under the dual action of the liquid pressure in the side cylinder and the tube blank to expand the branch. The hydraulic bulging process of the cast iron tee can be formed in one step, and the production efficiency is high; the wall thickness of the main pipe and shoulder of the cast iron tee is increased.

Due to the large tonnage of equipment required for the hydraulic bulging process of seamless cast iron tees, it is currently mainly used in the manufacture of cast iron tees with standard wall thickness less than DN400 in China. Its suitable forming materials are low carbon steel, low alloy steel, stainless steel with relatively low cold work hardening tendency, including some non-ferrous metal materials, such as copper, aluminum, titanium, etc.

2. Hot press forming

Hot press forming of cast iron tee is to flatten the tube blank that is larger than the diameter of the cast iron tee to the size of the diameter of the cast iron tee, and then stretch it A hole is made in the branch pipe; the tube blank is heated, put into the forming die, and a die for stretching the branch pipe is installed in the tube blank; the tube blank is radially compressed under the action of pressure, and during the radial compression process, the metal It flows in the direction of the branch pipe and forms a branch pipe under the stretching of the die.

The entire process is formed through the radial compression of the tube blank and the stretching process of the branch tube parts. Different from the hydraulic bulging cast iron tee, the metal of the hot pressed cast iron tee branch pipe is compensated by the radial movement of the tube blank, so it is also called the radial compensation process.

Due to the use of heated and pressed cast iron tees, the tonnage of equipment required for material forming is reduced. Hot-pressed cast iron tees have wide adaptability to materials and are suitable for low carbon steel, alloy steel, and stainless steel materials; especially cast iron tees with large diameters and thick pipe walls usually use this forming process.

Extended information:

The production of cast iron tee fittings is carried out according to certain process methods and principles to ensure that good production quality and guarantee can be ensured in actual production and processing. Dimensions include outer diameter, inner diameter, and wall thickness.

It is the requirement for packaging. For small pipe fittings, such as export, they need to be made of wooden boxes, about 1 cubic meter. It is stipulated that the number of elbows in such boxes cannot exceed one ton. The standard allows packages , that is, a large set and a small set, but the total weight generally cannot exceed 1 ton. For large items, they must be packaged individually, and items as large as 24″ must be packaged individually.

The other is the packaging mark. The mark should indicate the size, steel number, batch number, and manufacturer's trademark. The cast iron tee fittings should be stamped with a steel stamp, and documents such as packing lists and warranty certificates should be attached. It is also required to control the radius of curvature. For example, if the radius length is 1.5D, then the radius of curvature must be within the required tolerance range.

Since most of these pipe fittings are used for welding, in order to improve the welding quality, the ends are beveled, leaving a certain angle and a certain edge. This requirement is also strict, and how thick the edge is. , the angle and deviation range are all specified, and there are many more geometric dimensions than pipe fittings. The surface quality and mechanical properties are basically the same as those of pipes.

For the convenience of welding, the steel type of the pipes to be connected is the same.

That is, all tee fittings must undergo surface treatment. The iron oxide scale on the inner and outer surfaces is blasted away through shot blasting, and then coated with anti-corrosion paint. This is not only for export needs, but also domestically to facilitate transportation and prevent rust and oxidation, so work in this area must be done.

China Building Materials Network-Processing Requirements for Cast Iron Tee