General construction and metal structures since 1991
Lenmontag Group has unique experience in construction projects for heavy machinery, chemical and mining, and other branches of industry

About us

Lenmontag, a Limited Liability Company was established in St. Petersburg, Russia, in the year 1991. Today, Lenmontag Group stands as one of the largest heavy industry company in St. Petersburg and well known in the North-Western region of Russia as a construction, production and engineering firm.

  • 30
    years of service
    30 years of service
    Lenmontag Group was established in St. Petersburg, Russia, in year 1991
  • 126
    accomplished projects
    126 accomplished projects
    We have accomplished more than 120 construction projects during our history
  • 16
    regions of Russia
    16 regions of Russia
    We provide construction services not only in our home North-Western Region, but across entire Russian Federation
  • 2000
    2000 employees
    Our company enjoys partnership with more than 2000 construction professionals
Lenmontag History
  • 353 640
    tons of steel structures
    353 640 tons of steel structures
    Lenmontag Steelworks provides its clients with building and bridge structural metal components
  • 4
    industrial facilities
    4 industrial facilities
    Lenmontag Group encompasses four production facilities and plants in St. Petersburg and Leningrad Region
  • 429
    units of machinery and equipment
    429 units of machinery and equipment
    Our holding possesses more than 40 units of heavy construction machines and trucks
  • 83
    industrial projects
    83 industrial projects
    We have successfuly performed at more than 80 industrial construction projects


Услуги технического заказчика в СПб

Technical Customer

Lenmontag company provides the services of a Technical Customer in St. Petersburg, the Leningrad ...
Генеральный подряд при строительстве зданий

General contractor

Partnership with a general contractor in construction project provides the customer with guarante...
Монтажные работы

Montage and installation works

Lenmontag Montage Department provides services for the assembly and on-site installation of metal...
Общестроительные работы

Construction works

Lenmontag Civil Works Department performs full range of general construction works in St. Petersb...

Steel frames production

Lenmontag Steelworks manufactures construction steel elements, building frameworks and bridge spa...
Монтаж инженерных сетей

Utilities and engineering

Lenmontag company is engaged in the installation of utilities and supply lines in residential, in...


Happy New Year
Happy New Year

Lenmontag Group sincerely congratulates its dear employees, loyal partners and valued customers with the New Year 2022!

Аттестация АРСС
Attestation according to STO ARSS
Attestation according to STO ARSS

Lenmontag Group has passed the certification procedure according to STO ARSS № 11251254.001-018-5.

Lenmontag Steelworks is one of the most modern and large enterprises in the field of metal structure production in St. Petersburg and the North-West region. Its products are building and bridge steel structures weighing up to 100 tons and length up to 36 meters. The capacity of the plant is 36-40 thousand tons of structures per year. Flexible production system and continuous improvements allow to produce both single and series steel structures in the shortest possible time.

The prerequisite for launching rolled steel into production are the stages of incoming inspection, cleaning and straightening. All welding equipment, welding technologies and welding materials are certified by NAKS.

The company implemented a quality management system in accordance with GOST R ISO 9001-2015.

Lenmontag Group provides services of assembling and installation of steel structures of any complexity, of any kind and direction – from industrial and warehouse building frameworks to the elements of oil refineries and nuclear power plants.

Guidelines in the daily work of the management of the plant selected the following principles:

  1. Respect for the requirements, terms and conditions put forward by customers and business partners;
  2. Efficiency of operation and the desire for stable and maximum results;
  3. Honesty and completeness of information in relations with employees and customers;
  4. Interest not only in our own success, but also in the sustainable development of our partners.

Among the company’s completed projects are:

  • Frame of the turbine building of Kursk NPP-2;
  • Steel structures for the complex of the Central Processing Facility at the Kostomuksha deposit;
  • Steel structures for Arctic LNG-2, CSCMS;
  • Metallostructures of hopper rack for PJSC “Severstal”;
  • Steel structures for multifunctional complex HPP-2;
  • Zenit-Arena stadium and many others.

Attestation commission of ARCS confirmed full conformity of STO ARCS 11251254.001-018-5 production processes at Lenmontag Steelworks and issued a Certificate.

30 лет Ленмонтажу
30th Anniversary — Lenmontag Group
30th Anniversary — Lenmontag Group

Dear friends and loyal employees, today our company is celebrating its 30th anniversary since its foundation.