Material preparation
Wire is prepared in-house to the required production diameter before entering the relevant manufacturing line.
Quality Assurance
Quality at Sonic Steel is built around consistent material preparation, controlled production and regular inspection while manufacturing is in progress. Wire is prepared in-house to the required production diameter, finished products are checked against the dimensions and characteristics relevant to each product, and our quality systems are supported by ISO 9001:2015 and applicable SLS product certifications. Over more than 26 years of manufacturing, this approach has helped Sonic maintain a consistently low rate of quality-related returns and a reputation for dependable product quality among customers and distributors across Sri Lanka.
How we control quality
Production checks
Factory staff carry out frequent checks while production is running, rather than relying only on inspection at the end.
Product-specific inspection
Checks focus on the dimensions, formation and finished condition that matter for each individual product.
What we check
Inspection points differ by product and focus on the characteristics that determine the finished specification.
Wire Nails
Wire gauge · length · head & point formation · finished condition
Welded Mesh
Wire diameter · mesh spacing · panel dimensions · weld condition
GI Barbed Wire
Wire diameter · barb spacing · barb formation · finished condition
Cut-to-Length Processing
Processed size · cut length · finished dimensions
Certifications
ISO
Quality Management System
ISO 9001:2015
An internationally recognised framework for controlled processes, consistency and continual improvement.
SLS 7
Sri Lanka Standard
SLS 7
Certification against the requirements of SLS 7 for applicable Sonic Steel products.
SLS 8
Sri Lanka Standard
SLS 8
Certification against the requirements of SLS 8 for applicable Sonic Steel products.