They are typically manufactured by stamping sheet metal. Carbon and low-alloy steels are used for their manufacturing. The design and dimensions of the plugs must comply with the regulatory and technical documents.

1. Elliptical plugs
   
   They are made by stamping, the desired item of specified sizes is squeezed out by a hydraulic press. They work in a wide temperature range with nominal pressure up to 16 MPa.
2. Flat welded plugs and welded plugs with reinforcing ribs
   
   They are made of carbon and low alloy steels. They are made of rolled sheet, either of a segment of seamless or electric-welded pipes, inside which is welded a steel disc. They are used in low-pressure pipes, for example, heating systems, hot and cold water supply. They can be of diameter from 50 mm to 1420 mm with operating pressure up to 4 MPa.
3. Flange plugs
   
   They are made by turning, hot stamping, by gas cutting of steel sheet or of high-quality metal. They are manufactured in several designs: for oval gasket, raised face, with a raised ring (tongue) and depression (groove), male and female. They can be used in a wide temperature range at nominal pressure of 16 MPa.
4. Spectacle blinds
   
   They are made by machine processing of a blank. They consist of three parts: a ring, a connecting part and a blind part. The liquid flow is blocked by mounting the blind part into the flange connection and opens by installation of the revolving part of the plug with a hole. Usually, the spectacle plugs are used in pipes, where are carried some technical works in order to temporarily stop the flow of a moving medium.
5. Head
   
   Part of the pipeline, designed to overlap the end sections of the pipeline, various tanks and reservoirs.

• elliptic;
• spherical;
• torispherical;
• flat;
• conical.