ABOUT SRS
About Us
SRS is a division of Goodwin Refractory Services Ltd and along with our sister companies all of which are strategically located across the world supplying to their relevant markets are the world leaders in manufacturing and supplying investment powder to the jewellery industry. We have a proud history of producing the highest quality products for over 60 years.
SRS manufacture investment powders suitable for all jewellery applications from casting the likes of Brass & Bronze through to Silver & All Karat Yellow & White Gold including high Palladium White Gold. We also offer investment powders for high temperature alloys these being the likes of Stainless Steel, Platinum & Palladium alloys.
What We Offer
To complement our investment powders SRS also offer an extensive range of Injection waxes which are developed specifically for all different types of jewellery application. Using the highest quality raw materials to guarantee excellent surface finish and direct reproduction of all design details whilst being suitable for filigree work, very intricate detail and also stone-in-place wax setting.
We also offer a range of moulding rubbers-including Silicone rubber, Natural rubber, Liquid rubber and Putty rubbers suitable for all jewellery moulding applications through our sister company Castaldo. For further information on these products, please contact us for further details.
SRS JEWELLERY INVESTMENTS
SRS offers a comprehensive range of high-performance investment powders specifically formulated for all jewellery applications, they are suitable for casting in brass, silver, and all high-karat gold alloys.
Each product is engineered to deliver superior surface finish, precise detail reproduction, and reliable thermal stability, making them ideal for everything from delicate filigree pieces to complex, high-value gold designs.
Trusted by jewellers and manufacturers worldwide, our investment powders are backed by rigorous quality control and expert technical support, ensuring consistent results across diverse casting environments.