Allerton Steel Fabricated Beams & Boxes
Posted on 03 December 2024
Allerton Steel have manufactured a large Crane base for a project in London. Extensive machining was required on all the mating face which was completed in-house on our large machining centre - which has an 11m moving bed to allow machining of 2 perpendicular surfaces 2.5m high, 2.5m deep and 11m long.
Material Grade: S275J0
Main Beam Dimensions: 2460mm tall x 400mm wide and 7010mm long.
Thickness: Flange 80mm, Web 30mm
Full Penetration welds between webs and flanges.
Stiffeners: 15mm thick welded with 9mm continuous fillet welds.
Total weight of the complete assembly: 40,556kg.
Trial assembly carried out in our workshop before delivery to site.
Operating from modern workshops with over 4500sq/m (50,000sq/ft) capacity. We are equipped with modern plant and machinery including semi-automatic welding, CNC operated profile, saw, drilling and milling machines. Additionally, we have a 3D modelling and surveying system to assist with complex fabrications and inspection.
- Welding - MMA; MIG; MAG, Sub-arc, - High tensile and weathering steels.
- Complex fabrications up to 40m long and 5.5m wide.
- In-house machining, 3 no. High Accuracy milling machines. 11m bed, 11m travel 2.5 face up size
- Profiling - 27m x 3m deck. 300mm thickness, bevel and straight cutting. Automatic drilling head
- 60 Tonne overhead crane capacity
- CNC drill and saw line up to 914UB size
- Site welding services
- Proof loading
- Weld test; MPI or Radiography
- Trial assembly
- 3D modelling system
- Mechanical & hydraulic assembly
UKCA Marked to Execution Class 4 BS EN 1090 with ISO 3834-2 Welding Quality Management certification.
For Military we are JOSCAR approved, for highways bridges we are NHSS Sector 20 and RQSC qualified, for Network Rail-bridges we are RISQS qualified. We hold ISO 9001:2015, ISO 45001:2018 and hold the BCSA Sustainability Award - Silver Standard and Construction Line - Gold Standard.
