Overview

This document provides detailed information on stainless steel structural tubes, specifically rectangular and square sections, offered by Aalco Metals Ltd. It covers product specifications, stock range, tolerances, applications, quality assurance, and contact details for various Aalco branches.

Product Range and Specifications

• Material: Stainless steel structural tubes, grades 403 and 613.
• Shapes and Sizes: Square tubes up to 52mm, rectangular tubes up to 200mm x 300mm, with thicknesses ranging from 0.5mm to over 5mm.
• Surface Finish: Items are available from stock with a descaled finish; polishing can be arranged on request.
• Lengths: Standard lengths are 6 meters, fully cut and backed; special lengths can be supplied for specific projects.
• Stock Availability: A wide stock range is maintained, including massive 52mm square tubes and various rectangular sizes.

Technical Properties and Tolerances

• Dimensional Tolerances: External dimensions vary by size category, with tolerances from ±0.1mm to ±1% depending on dimension.
• Thickness Tolerances: ±10% for thicknesses under 5mm; ±0.5mm for thicknesses over 5mm.
• Squareness: ±1° to ±0.09° for all tubes.
• Straightness: Maximum deviation of 0.15%.
• Twist: Maximum twist of 0.5mm per meter plus 2mm.
• Convexity/Concavity: One side convexity minimum 0.5%, maximum 0.8%; two sides concavity.
• Corner Radius: External corner radius varies with thickness and size.

Applications

Stainless steel structural tubes are widely used in various industries and applications including:

• Structural components such as bars, angles, flats, plates, and sheets.
• Welded mesh and handrail tube sections.
• Round tubes with diameters from 10mm (4") and thicknesses from 3mm.
• Engineering sectors including offshore, food processing, construction, architecture, heavy engineering, packaging machinery, paper making, railways, mining, and automotive chassis.

Quality Assurance and Production

• All products are fully inspected and selected to ensure quality for Aalco customers.
• Manufacturing uses advanced technology including continuous feed rolling, plasma/GIT welding, and current-eddy verification processes.
• Welded joints are located at the center of the narrow face for integrity.
• Products comply with relevant standards and are produced with competitive pricing.

Additional Product Range

Aalco also offers a comprehensive range of semi-finished stainless steel products including multi-metal stockholders in the UK, with alloys such as nickel, bronze, brass, copper, aluminum, and steel. Bespoke items and processing facilities are available for individual and industrial customers.

Contact Information

For further information, full product catalogues, pricing, or orders, customers are advised to contact their local Aalco branch. The document lists multiple branch addresses, telephone, fax numbers, and emails across the UK and Northern Ireland, including locations such as Aberdeen, Birmingham, Chepstow, Dyfed, Glasgow, Hull, Leeds, Liverpool, Manchester, Newcastle, Norwich, Nottingham, Southampton, Stoke, Swanley, Belfast, Aylesbury, and Essex.