BUMAX® is known as ‘The World’s Strongest Stainless Steel Bolts’. Manufactured in Sweden by BUMAX AB, their high-performance fasteners are found in some of the most demanding fastening applications, in some of the harshest environments. BUMAX fasteners are trusted globally by engineers for their high-performance, safety critical and commercially demanding fastening applications. BUMAX boasts an extensive stock range of stainless-steel material grades, as well as unique manufacturing capabilities to cater for applications in industries such as offshore, marine, industrial process equipment, mining, transportation, defence, space, etc. For the construction industry, BUMAX offers very high strengths, equivalent to carbon steel strengths. As a leader in stainless steel bolting, BUMAX is able to support projects with both non-preloaded and preloaded structural bolting applications in stainless steel. Typical applications include bridges, footbridges, tunnelling, facades, offshore structures, coastal infrastructure, stainless steel structures, utilities, waterways, etc. All BUMAX products are 100% European traceable, fully tested and available with 3.1 product test certificates for complete reassurance. Custom designed fasteners, project specific manufacturing and testing can also be catered for.

Applied Bolting Technology™ produces Squirter® DTIs (Direct Tension Indicators) that supply a bright orange indication when bolts have been tensioned, making tight bolts easy to see. DTIs are load cells that ensure compliance with bolting standards and specs. Torque, Part Turn and TCBs can all produce false-positive tension, and regularly do: Torque scatter is ±40 percent for new bolts, and worse for weathered. Relying on torque is optimism, at best. TCBs are torque bolts adversely affected by cold or wet weather. Part Turn can be defeated by misrepresenting turn angle, regardless of turn applied. DTIs read load. If a bolt is tight, a Squirter DTI will show it, independent of weather, torque, angle, tool or skill.

World-renowned Macalloy is synonymous with quality and reliability in the construction industry. Architectural tension structures, bridges, façade engineering, post-tensioning, ground engineering, and site services equipment, training, and hire are among our many products for construction applications. We have strong business relationships with consulting engineers and architects worldwide. Our Architectural solutions have inspired new designs in several famous buildings worldwide. Our projects range from small residential to large stadium, bridges, and airport construction. We supply Glulam and Timber applications, offering lightweight, flexible, tension structures systems in sustainable architecture. Macalloy exports to over 100 countries. Awarded the Queens Awards in 1996 (Export Achievement)