Prohibition on Using Non-Standard Butt-Weld Forging Machines for Rebar

According to the resolutions and recommendations of the Professional Association and industry experts in construction and seismic engineering, the use of butt-weld forging machines for rebar that lack a valid calibration certificate from accredited inspection companies and cannot guarantee reliable technical performance is strictly prohibited.

Hereby, it is explicitly declared:

The use of machines such as GPW gas pressure forging welding machines (Reken, China) and Kenza, Iran that:

Do not meet internationally recognized standards for forging welding
Cannot be properly calibrated or have invalid calibration
Have no technical application in the construction industry and have been mistakenly used in this field
Exhibit instability, weak performance, and reduced weld quality during operation
Are incapable of producing uniform, homogeneous, and reliable welds

is strictly forbidden.

Technical and Safety Reasons for the Prohibition

The inherent weaknesses of these machines cause:

Unstable and uncontrollable application of pressure, temperature, and forging time
Welds with porosity, discontinuity, and incomplete metallurgical bonding
Final connections that are weak, unreliable, and mechanically insufficient
Lack of approval from recognized forging associations in Japan and Iran

Consequently, the use of such machines:

Produces welds that are highly prone to sudden failure under structural load, especially during earthquakes
Directly increases the risk of irreversible human casualties and financial losses

This is a fully verified, non-negotiable technical fact, and any use of these machines constitutes a direct threat to public safety.

Approved and Authorized Forging Machine

The only globally approved and reliable machine for butt-weld forging of rebar is:

DAIA Forging Welding Machine (Japan)

⚠️ Conditional upon meeting all of the following requirements:

Valid calibration certificate from an accredited inspection company
Up-to-date and certified professional skills for the operator
Full compliance with the manufacturer’s technical guidelines and professional association instructions
Certified and trained operators

Explicit Warning to Owners, Inspectors, and Contractors

All project owners, inspectors, supervisors, and contractors are strictly warned:

If you observe the use of:

Reken forging machines (China)
Kenza forging machines (Iran)
Any non-standard, non-calibrated, or unapproved forging machines

You are obliged to immediately:

Issue a halt order for all forging welding operations
Replace the contractor responsible without delay
Prevent any continuation of this dangerous technical error

Continuing to work with such a contractor constitutes acceptance of direct responsibility for human and financial risks.

Final Emphasis

Structural safety is non-negotiable.
Butt-weld forging of rebar using non-standard Chinese Reken or Iranian Kenza machines is an absolute red line for safety.

No economic, time, or operational justification can justify endangering human lives.