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PEB knowledge

Fabrication & quality

How PEB members are cut, welded, roll-formed, blasted, painted, inspected and packed.

7 articles

Fundamentals Frame systems Components Design Materials Fabrication Erection Standards Applications WSC products WSC solutions

Factory floor of a PEB plant with built-up rafters on welding lines and finished members stacked for painting

FabricationFabrication processHow a PEB plant turns plate and coil into a building kit: cutting, welding, roll forming, blasting, painting, inspection and export packing.

CNC cutting table nesting tapered web plates on a large steel plate

FabricationPlate cuttingHow PEB flanges and tapered webs are cut from steel plate by CNC plasma and oxy-fuel, nested for low scrap and checked for edge quality.

Gantry submerged arc welding machine welding the flange-to-web joint of a tapered I-section rafter

FabricationAutomatic weldingHow PEB columns and rafters are fitted up and welded by automatic submerged arc welding, then straightened and fitted with end plates and stiffeners.

Cold roll forming line producing Z purlins from galvanized coil with a punching unit and flying shear

FabricationCold roll formingHow Z and C purlins, girts, eave struts and roof and wall panels are cold roll formed from coated coil, with inline punching and cut-to-length.

Blasted PEB rafter entering a paint booth with airless spray equipment

FabricationBlasting and paintingShot blasting to ISO 8501-1 Sa 2½, profile, primer and paint systems selected to ISO 12944, DFT checks and when to choose hot-dip galvanizing for PEB.

Inspector performing ultrasonic testing on the welded knee of a PEB frame member

FabricationQuality controlQuality control for PEB fabrication: material traceability, VT, UT and MT weld inspection, dimensional checks, coating DFT and the export quality dossier.

Bundled PEB rafters and purlins being loaded into a 40-foot container at the factory

FabricationPacking and shippingHow PEB members, cladding and accessories are marked, bundled and packed into containers, flat racks or break-bulk for export, and the shipping documents.

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