We value the customers who have worked with Sonic over many years and aim to maintain those relationships through dependable products and straightforward service.
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.
Customer Satisfaction
Our business relies on customer satisfaction. Many of the relationships Sonic has built with customers and distributors have continued for more than two decades, and we take that trust seriously.
When a product concern or complaint is raised, our team works to respond and resolve it promptly rather than allowing issues to remain outstanding.
Feedback is taken seriously and used to protect the standards our customers expect from Sonic Steel.
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