Pre-Engineered Steel Warehouse Building, 24–60 m Clear Span

Design, fabrication and supply of pre-engineered buildings with tapered welded frames, Z-purlins and colour-coated roof and wall panels, detailed in Tekla and welded to AWS D1.1. Supplied CKD with bolts and drawings for the customer's erector or with Dong A crews in Vietnam. Key specifications — Clear span: 24–60 m; Frame: Tapered welded H-sections, Q345B; Welding: AWS D1.1; Surface: Shot-blast Sa 2.5, primer + topcoat; Design code: AISC / TCVN. Pricing is quoted per project after a technical review of drawings or specifications (minimum 1 sets). Production lead time is 60 days after sample approval. Samples are handled as part of the project quotation. Colours, materials, logos and packaging can be customised, and the factory supports OEM and ODM development from tech packs or samples. Packaging: Each set in a printed retail box with foam or corrugated dividers, master cartons palletised for container loading. Ships EXW / FOB / DAP from Hai Phong port (Lach Huyen / Dinh Vu). Sea freight (FCL/LCL) for bulk orders, air or courier for samples and urgent lots. Manufactured by Dong A Steel Structures in Hai Phong, Vietnam, a manufacturer established in 2007 holding ISO 9001.