12m lengths are bundled with nylon straps (min 60° angle). Stacking limited to 1.5m height with timber dunnage. Sea shipments use twist locks rated for 30t dynamic loads. Middle East projects often require desert-proof packaging.
What are the welding requirements for A36 material
Preheat to 150°C for thickness >25mm. Use E7018 electrodes for SMAW or ER70S-6 wire for GMAW. Interpass temperature must not exceed 250°C. American contractors require AWS D1.1 certification for all structural welds.
How do you retrofit existing structures?
Post-installed chemical anchors (Hilti HVU) connect new beams to old concrete. Laser scanning ensures ±5mm fit accuracy. In seismic zones, add X-bracing with HEA 240 sections. Fireproofing must match original ratings.
What are the corrosion protection options?
Epoxy coatings (300-500μm) with polyurethane topcoats for harsh environments. Duplex systems combine galvanizing with paint. Cathodic protection for submerged applications. Inspection every 2 years in coastal areas.
How to specify beams in BOQ documents?
Include: Material grade, standard, quantity (LM), surface treatment, testing certs. Example: "HEA300-S355J2-EN10025-1200LM-HDG80μm-EN10204 3.1". Indian projects often require additional ISI marking.
What are the modular construction advantages?
Prefabricated H-beam frames reduce onsite labor by 30%. Bolt connections enable rapid assembly. Standard 6m/12m lengths streamline logistics. Growing popularity in Singapore high-density projects.