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