Following fabrication, the product undergoes normalization and shot-blasting for clean and optimized surface finish. SGL's automated CNC furnace applies the glass coating, ensuring even curing to precise quality standards through fusion of glass particles at temperatures typically above 800°C. In-house computer-controlled heat treatment furnaces reach temperatures of up to 1000°C.

SGL conduct 100% inspection on all manufactured vessels and pressure containing equipment.
Our inspection process is fully detailed in our ISO 9001:2008 Quality Management System and adhered too at all times given the service criticality of the products we make. We also welcome client inspection hold points during the manufacturing process, where, at pre-agreed times, client quality engineers can inspect the partly-manufactured products. This is typically required where inspection can not be undertaken when the product is in its final stages (i.e. reviewing the surface finish inside a welded/sealed vessel could be a requested inspection hold point).