About the plant

Dear Guests,

Public Joint Stock Company “Saransk Instrument Works” (PJSC “SIW”), founded in 1959, is specialized in design and manufacture of bellows and devices for such industrial branches, as oil and gas, nuclear, chemical, metallurgical, space industry, transport machine building, public services, shipbuilding and military-industrial complex.

The plant’s core activities are:

  • development and production of devices for monitoring and control of process procedures, such as pressure switches and and temperature relay-sensors; pressure indicator units, heads, and indicators; membrane indicating draft gauges, head gauges, draft-head gauges, and differential pressure gauges; tachometers; electro-pneumatic transducers and positioners; membrane phase separators, etc.;
  • development and production of single-, double-, multi-layer and welded diaphragm bellows of over 200 typical sizes as well as expansion joints, units and assemblies based on them;
  • rendering services such as design and manufacture of process equipment, dies and molds, and other process tools; manufacture of aluminum and plastic parts; repair and mechanical services.

High industrial and engineering level of the company is confirmed by certificates and licenses issued by the Federal Agency on Technical Regulating and Metrology as per GOST ISO 9001-2015, GOST RV 0015-002-2012, Maritime Register of Shipping and River Register, licenses for construction and manufacture of equipment for nuclear power plants; and there is also a permanent Military Representative Office of the Ministry of Defense of the Russian Federation at the company.

PJSC “SIW” was the first Russian company to obtain a certificate of conformity for bellows units in line with the requirements applicable to products used in the nuclear power sector.

We have been working at improvement of existing products and development of new ones to suit customers and market requirements. Working with our company, you will benefit from order fulfilment time, and our quality and ability to comply with customers' requirements of any difficulty.

With its 60 years’ experience, PJSC “SIW” is highly rated both in the Russian Federation and in near-abroad countries as a plant that guarantees reliability of partnership and world-class quality of its products.

We are open to dialogue and ready to discuss any cooperation options on mutually beneficial terms, including pricing issues.

PJSC “SIW”: the best devices for the world to measure!

Kind regards, Director General of Public Joint Stock Company “Saransk Instrument Works” I.V Egorov.