Metal structure projects

Company Overview and Areas of Expertise

Sazeh Azmoun Foolad Consulting Engineering Company (STS)  has been active since 2006, specializing in  welding engineering  and  non-destructive testing (NDT) . As a pioneer in the execution of  metal structure engineering projects  in Iran, STS relies on its technical knowledge, vast experience, and highly skilled personnel to provide a wide range of services in  welding, inspection , and the  fabrication of industrial and structural steel frameworks .

Key Areas of Activity:

•     Structural design for residential and industrial steel buildings
•     Consulting and contractor selection for steel fabrication and erection
•     Issuance of certified  WPS ,  WQT , and  PQR  documents, and welding permits
•     Construction and project management of steel structures
•     Supervision and quality inspection during fabrication and site erection
•     Execution of large-scale metal structure installation projects

The Importance of Metal Structure Projects and STS’s Expertise

With rapid urbanization and growing industrial demands, the need for  high-quality, standards-compliant metal structures  is more crucial than ever. The durability and safety of steel frameworks in buildings, bridges, towers, and industrial facilities depend on  precision in design ,  rigorous quality control , and  professional fabrication .

STS sets itself apart through:

•     Use of cutting-edge production and erection technologies
•     Skilled workforce and qualified welding engineers
•     Comprehensive quality control measures at every stage
•     Monthly production capacity of approximately  2,600 tons of steel structures

Emphasizing  seismic resistance  and  gravity load management , STS prioritizes  welding inspection  and  quality assurance . Many structural failures in Iran have been linked to improper welds and poor-quality control—issues that STS systematically eliminates through engineering rigor and continuous monitoring.

Execution Process of Metal Structure Projects

STS adopts a systematic, standard-based approach for the successful execution of metal structure projects. The process includes four key phases:

        1. Preliminary Studies and Engineering Design

•     Analysis of project needs and load estimations
•     Selection of optimal and cost-effective steel sections
•     Production of detailed  shop drawings  and  erection plans

        2. Fabrication and Component Preparation

•     CNC cutting of plates and profiles
•     Precision bending, forming, and pre-assembly
•     Welding in compliance with  WPS/PQR  standards and  WQT  testing
•     Execution of  destructive and non-destructive tests :
•     Ultrasonic Testing (UT)
•     Magnetic Particle Testing (MT)
•     Radiographic Testing (RT)
•     Dye Penetrant Testing (PT)
•     Tensile, Bend, and Impact Tests

        3. On-Site Installation

•     Safe transportation of components to the project site
•     Installation based on engineering plans, including:
•     Columns, beams, braces, and cross-members
•     Final connection control:
•     Site welding, bolting, and placement of nuts
•     Continuous quality inspections and documentation
•     Final inspection and phased NDT until  weld traceability certificates  are issued

        4. Surface Treatment and Coating

•     Sandblasting  according to standard procedures
•     Application of  anti-corrosion paint systems  or  hot-dip galvanization
•     Final surface inspection and  adhesion and coating thickness  tests

 Highlighted Metal Structure Projects

STS has successfully executed a wide range of complex steel structure projects across industrial and commercial sectors. Notable examples include:

•      Overseas Technical Services Kish Company , column structure project (Garmsar)
•      Tehran Railway Square Development , steel framework supply and erection
•      Yas Chitgar Residential Complex , with a steel structure weight of ~8,000 tons
•      Vosak Tower 3 , located in Tehran, with a weight of ~12,000 tons
•      “Aseman” High-Rise Project , 18 floors, ~2,500 tons of steel structure
•      Pasargad Commercial-Residential Complex  steel framing
•      Morvaridshahr Mixed-Use Complex  and  Refractory Industries HQ Building

These projects showcase STS’s ability to handle  large-scale, high-rise, and complex steel structures  with precision and speed.

Standards and Quality Control

STS’s commitment to quality is reflected in its full-cycle implementation of the  Quality Control Plan (QCP)  and the  Inspection and Test Plan (ITP) . All operations—design, fabrication, welding, surface treatment, and installation—are governed by international and national standards.

Key Quality Control Practices:

•   Issuance of  weld identification certificates , including NDT and destructive testing reports
•   Preparation of detailed  Welding Procedure Specifications (WPS)  ,  Procedure Qualification Records (PQR) , and  Welder Performance Qualifications (WPQ)
•   Scientific and practical assessment of welder performance
•   Documentation of  welding calculations ,  fabrication drawings (DFP) , and quality logs
•   Inspection and testing of  surface preparation and coating quality , including adhesion and thickness measurement

 Why Choose STS for Steel Structure Projects?

•   Over 15 years of proven experience in metal structure engineering
•   Compliance with ISO, AWS, ASME, and Iranian national codes
•   Dedicated QA/QC departments with NDT Level II and III certified experts
•   Flexibility to manage both EPC and subcontracted steel structure projects
•   Commitment to safety, durability, and environmental compliance