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ENTRY QUALITY CONTROL
Prior to feeding to manufacturing, steel billets are subject to the following controls:
• Visual checks for cracks, fissures, plies, slag, etc. surface defects,
• Compliance of cross-section dimensions with specifications, and rhombicity check,
• Quantity, length, straightforwardness, etc. controls,
• Macroetching controls aimed at detection of billet internal defects (oxidation, pin holes, blow holes, etc.).
CHEMICAL CONTROL
Samples of steel billets of steel billets are processed, and a spectral analysis is conducted thereon in order to verify and validate the compliance of chemical composition with the relevant order. This analysis is performed by ARL 4460 model high-level spectrometer.
PROCESS CONTROL
Our factories, having adopted the quality control as an essential principle at all stages of manufacturing, check and monitor the compliance of product dimensions with standards by means of online dimensional control devices and through dimension checks made by quality control technicians.
FINAL QUALITY CONTROL
At the end of the production line, the products are straightened, aligned and packed in conformity with the customer demands and standard requirements are delivered to the warehouse after final checks thereon.
LABORATORY TESTS
Tensile tests, Charpy V notch impact tests, bend tests, microscopic microstructure and grain size measurements, ultrasonic crack inspections, etc. tests are performed in our laboratory by using the state-of-the-art test instruments in accordance with the relevant standards.
Samples taken from the tested products are kept as witness samples for the customer for a period of 1 year.
BARCODE SYSTEM
All stages of the manufacturing process are online monitored. Products are labeled by a barcode system created with process records. Traceability of the product in the course of all process steps starting from the raw material stage is the most important quality control parameter.
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