Assembled house

When sourcing assembled houses, prioritize the structural frame material, typically Q235 or Q345 galvanized steel, to ensure corrosion resistance and seismic stability. Evaluate the wall panel insulation (EPS, Rock Wool, or PU); Rock Wool is preferred for its Class A fire rating. Additionally, verify the floor load-bearing capacity (standard is ≥2.0kN/m²) and the roof snow load resistance to match the destination climate.

Compliance is critical for legal installation. Ensure the supplier meets ISO 9001 for quality management and ISO 14001 for environmental standards. For specific markets, look for CE marking (EN 1090-1) for Europe, AS/NZS standards for Australia/New Zealand, and ASTM or IBC (International Building Code) compliance for North America. Always request material test reports (MTRs) for the steel and fire-retardant certificates for insulation.

Durability depends on the type: Detachable container houses are ideal for temporary sites (5-10 years), while Light Steel Villas are designed for permanent residency (50+ years). For coastal areas, specify high-grade anti-corrosion paint (C4 or C5 category). For extreme cold, ensure a thermal break system is integrated into windows and doors to prevent energy loss.

A top-tier supplier should provide BIM (Building Information Modeling) or AutoCAD drawings for structural approval. They must offer integrated MEP (Mechanical, Electrical, and Plumbing) systems that are pre-installed or pre-configured to meet the destination country's voltage and pipe threading standards. Check if they can provide modular furniture or sanitary ware as a 'turnkey' solution.

The biggest risks include structural mismatch due to poor communication and damage during maritime transit. To mitigate this, use Made-in-China.com's Secured Trading services to protect your payment until the goods pass inspection. Always hire a third-party inspector (like SGS or Intertek) to conduct a pre-shipment inspection (PSI) to verify dimensions, welding quality, and component counts.

Negotiate based on Total Landed Cost, not just the EXW price. Ask for a detailed Bill of Quantities (BOQ) to avoid hidden costs for bolts, glass glue, or trim. For bulk orders (e.g., 10+ units), aim for a 10-15% volume discount. Request a spare parts kit (approx. 2-3% of order value) including extra panels and fasteners to cover potential on-site installation breakage.

Assembled houses are usually shipped in 40ft HQ containers. For 'Flat-pack' models, one 40HQ can typically hold 6 to 8 units, significantly reducing freight costs. Ensure the supplier uses seaworthy packaging with steel pallets or plastic wrapping to prevent saltwater corrosion. Confirm the Incoterms; CIF is convenient, but FOB allows you better control over the shipping schedule and local port fees.

Verify the supplier's Audit Reports on Made-in-China.com to confirm their factory scale and export history. Ensure the contract includes a warranty period (typically 1-2 years for structure) and the provision of an installation manual or video guidance. For large projects, negotiate for the supplier to provide remote technical support or on-site supervision during the assembly phase.