In the production of industrial joists in the country, adherence to engineering and technical principles in accordance with national standards and reputable publications, including Publication 543 by the Management and Planning Organization, is absolutely essential. This publication, as one of the primary references, defines in detail the design, implementation, and quality control procedures for joists.
In addition, the Iranian National Standard No. 1-2909 is also used to determine the specifications of the rebars and other components used in the joists. Strict implementation of these standards increases the strength and durability of structures and ensures the overall safety of the project. Furthermore, these regulations enforce precise quality requirements and keep production processes up-to-date, ultimately boosting engineers’ and contractors' confidence in industrial products that meet standards.
Joists constructed based on engineering standards possess specific features that distinguish them from non-standard types. Some of these features include:
These combined advantages make standard industrial joists an ideal choice for construction and civil engineering projects.
The production process of industrial joists consists of several key stages, each playing a crucial role in the final product’s quality:
1. Preparation and Cutting of Rebars
In this stage, rebars are cut according to the design drawings. Tension and zigzag rebars are cut to precise sizes using automatic machines, followed by cleaning and bending (if necessary). It is mandatory to use rebars that have quality and standard certifications.
2. Assembly and Welding of Components
The prepared rebars are placed in special molds or designed frames and connected using spot or arc welding machines. In this process, the tension rebar is placed at the bottom, the compression rebar at the top, and the zigzag rebars in between to create a strong structure. This stage requires high precision to ensure firm and standard connections.
3. Concrete Pouring and Curing
After assembly, concrete with a precise mix of cement, water, and sand is prepared and poured uniformly onto the joists. Using a vibrator, the concrete is compacted, and then curing begins to prevent cracking and increase durability. Once the desired strength is achieved, the joists are removed from the mold and are ready for transport and on-site use.
National standards in the production of industrial joists are the key to achieving strong, safe, and economical structures. Proper production practices, from cutting rebars to final concreting, lead to increased durability, reduced execution costs, and greater trust from designers and contractors. This is why using standard industrial joists can have a significant positive impact on the overall project quality in civil and construction works.

TakNama Industrial Joist
Kurd Esthekam TakNama Company began its operation in 2000 in Saqqez, Kurdistan province. Initially, our main focus was on producing handmade joists and providing related construction services. However, by relying on modern technical knowledge and utilizing mechanized machinery, for the first time in Kurdistan province, we managed to professionally and mechanized launch the production of industrial joists professionally and purchase standard joists.
Today, with over two decades of experience in the field of industrial joist production, we have earned a reputable position among domestic manufacturers. Our products are produced in compliance with national and international standards and can deliver satisfaction in a variety of both small and large projects.
Distinguishing features of our products:
Today, TakNama Industrial Joist Company, with 9 active agencies in different cities across the country, has successfully registered the production of joists with large spans up to 9 meters, demonstrating our technical strength and top market standing.
We are committed to principles such as integrity, responsibility, quality, and customer respect. These values are embedded throughout our processes and play a key role in strengthening trust and collaboration.
To improve construction quality in Iran, we produce reliable products aligned with the latest global technologies. Raising productivity and promoting innovation in production are among our key values.
We strive to become the top brand in industrial joist production and precast concrete parts. In this journey, maintaining quality, implementing innovation, adhering to environmental sustainability, and responding precisely to market needs are our top priorities.