Frequently Asked Questions

You can request a quotation by filling out the contact form on our website, emailing us at kangguangjian91@gmail.com, or clicking the WhatsApp button to chat with our sales team directly. Please provide your building dimensions, intended use, and any specific requirements. We typically respond within 2 hours during business days.

For the most accurate quotation, please provide: (1) Building dimensions (length × width × height), (2) Local wind/snow load requirements, (3) Intended use (warehouse, workshop, poultry house, etc.), (4) Crane requirements (if any), (5) Any specific material preferences. If you have drawings, you can attach them directly in the contact form or send via WhatsApp.

We have no strict minimum order quantity. However, for small orders (under 20 tons), sea freight consolidation may be required, which can affect delivery time. Our sales team will advise the most cost-effective solution for your project size.

Our standard payment terms are: 30% down payment after contract signing, 70% balance before shipment. We accept T/T (bank transfer), L/C at sight, and Western Union for smaller amounts. For long-term partners, we can discuss flexible payment arrangements.

Our quoted prices typically cover EXW (ex-works factory price) or FOB (free on board). Installation is not included in the base price, but we provide: (1) Detailed installation drawings, (2) Remote video guidance, (3) On-site engineer dispatch (at additional cost). Most of our clients successfully install the structures themselves with our remote support.

No. Our quotations are transparent and itemized. The only additional costs you may incur are: (1) Local taxes and customs duties (varies by country), (2) Local transportation from port to site, (3) Installation labor (if you hire locally). We provide a comprehensive cost breakdown so you can budget accurately.

Standard production time is 20-30 days after receipt of down payment and final drawing confirmation. Large or complex projects may take 30-45 days. We will provide a detailed production schedule upon order confirmation. Expedited production is available for urgent projects — please consult our sales team.

We ship worldwide via 20ft and 40ft containers. Typical shipping times: Southeast Asia (7-15 days), Africa (20-35 days), Middle East (15-25 days), Australia/New Zealand (18-30 days), Europe (25-40 days). We handle all export documentation (Bill of Lading, Commercial Invoice, Packing List, Certificate of Origin).

All steel components are: (1) Properly labeled with installation marks, (2) Bundled and secured on steel pallets, (3) Protected with waterproof wrapping and desiccant to prevent rust during transit. Glass wool and sandwich panels are packed in separate protected bundles.

Our factory is ISO 9001 certified, and our products are CE certified for European markets. We also hold IAF certification and have passed Supplier Assessment. Mill test certificates (MTC) are provided for all raw steel materials. Third-party inspection (SGS, BV, TUV) is available upon request at buyer's cost.

We provide a 10-year limited warranty on the main steel structure against manufacturing defects and abnormal rusting under normal conditions. The cladding system (color steel sheet) carries a 5-year warranty against significant fading and corrosion. Detailed warranty terms are provided in our contract.

Absolutely! We welcome client visits to our Shangqiu factory. If you cannot travel to China, we can arrange a live video call to show you the production line, quality control processes, and completed projects in our warehouse. Many of our long-term clients have visited us in person.

Yes! We provide comprehensive installation support: (1) Detailed step-by-step installation drawings in English, (2) Structural calculations and foundation drawings, (3) Remote video guidance via WhatsApp/WeChat/Skype, (4) 24/7 technical support during installation. For large projects, we can dispatch an engineer to site (travel and accommodation at buyer's cost).

Foundation requirements depend on building size and local soil conditions. We provide foundation design drawings based on your local building codes and soil bearing capacity. Typically, reinforced concrete strip foundations or independent foundations are used. We recommend consulting a local structural engineer to review our foundation design.

For a typical warehouse (1,000-2,000 m²), a team of 4-6 skilled workers can complete the installation in 10-20 days, depending on experience and weather conditions. We provide a detailed installation manual and can review your installation plan beforehand.

Yes, we design every project according to your local wind load, snow load, and seismic requirements. Please provide your local building code requirements or the design parameters, and our engineering team will ensure the structure meets all safety standards. We use Tekla, SkyCiv, and PKPM software for accurate structural calculations.

We provide general arrangement drawings, foundation drawings, and structural calculations that can be submitted for building permits. However, you may need a local engineer to stamp the drawings according to your country's regulations. We can provide all necessary technical documents in editable formats (DWG, PDF).

Yes, we can use specific steel grades (Q235B, Q355B, ASTM A36, A572, etc.) and coating systems (epoxy zinc-rich primer, polyurethane topcoat, hot-dip galvanizing) upon request. Please specify your requirements in the inquiry, and we will provide a tailored solution.

With proper maintenance, our steel structures have a design life of 50 years. The anti-corrosion coating system (epoxy zinc-rich primer + polyurethane topcoat, 240μm total) provides 15+ years of protection in normal industrial environments. For coastal or high-humidity areas, we recommend hot-dip galvanizing for 25+ years of protection.

Steel buildings require minimal maintenance: (1) Inspect coating every 3-5 years and touch up any scratches, (2) Clean gutters and drainage systems regularly, (3) Check bolt tightness after first year and after severe storms, (4) Inspect roof panels for loose fasteners. We provide a detailed maintenance guide with every project.

Yes, we provide comprehensive after-sales support: (1) 2-year free technical support for installation and maintenance questions, (2) 10-year structural warranty, (3) Spare parts supply (we keep records of all your project's components for easy replacement), (4) Regular follow-up calls to ensure your satisfaction.

Absolutely. We keep all project drawings and records for 10+ years. If you need additional parts, replacement panels, or expansion of your building, we can reproduce components with exact matching specifications. Many clients come back to us for factory expansions after 3-5 years.

Steel structure costs range from $25-110/m² FOB China depending on building type: light portal frame warehouses ($25-40/m²), heavy industrial buildings with cranes ($40-70/m²), aircraft hangars ($55-110/m²), and agricultural buildings ($20-35/m²). Use our free cost calculator for an instant estimate based on your dimensions.

Our FOB price includes: all structural steel fabrication, primer painting or galvanizing, purlins and girts, bolts and fasteners, erection drawings and manuals, packing, and loading onto the vessel at a Chinese port. It does NOT include: ocean freight, marine insurance, import duties, local taxes, foundation work, or on-site installation.

Our engineering-grade calculator estimates steel tonnage within ±10-15% accuracy based on portal frame design standards. It calculates primary steel (columns + rafters), purlins, secondary steel, and bolts separately. For a firm quotation, our engineers review your specific wind/snow/seismic requirements — this typically adjusts the estimate by ±10%.

The biggest price drivers are: (1) Overhead crane capacity — a 20T crane can double column steel weight, (2) Wind/snow load requirements — cyclone zones add 15-30% to steel tonnage, (3) Seismic zone — adds bracing and heavier connections, (4) Span width — clear spans over 40m require heavier rafters, (5) Surface treatment — hot-dip galvanizing adds ~$200/ton vs. primer paint.

The process is: (1) Confirm design and sign contract, (2) We fabricate and send you loading photos, (3) You arrange freight forwarder or we recommend one, (4) We ship FOB from Qingdao/Shanghai port, (5) Your forwarder handles customs clearance, (6) Delivery to your site. We provide all export documents: commercial invoice, packing list, bill of lading, and certificate of origin.

A typical 1,000m² warehouse fits in 2-3 × 40HQ containers. Rough estimate: 1 × 40HQ container holds approximately 20-25 tons of steel or 400-500m² of building. Our packing team optimizes container loading to minimize freight costs — we send you the loading plan before shipment for confirmation.

Top mistakes to avoid: (1) Ordering before confirming local building code requirements, (2) Not checking bolt grade specifications for your wind zone, (3) Skipping third-party inspection for large orders, (4) Not verifying container loading photos before shipment, (5) Assuming the Chinese foundation design fits your soil conditions — always have a local engineer review it.

We provide all required export documents and HS codes (typically 7308.90 for steel structures). For most countries, your local customs broker handles clearance — we can recommend experienced freight forwarders in Southeast Asia, Middle East, Africa, and Australia who have handled our shipments before. Import duty on steel structures is typically 0-15% depending on your country.