Frequently Asked Questions

Yes. We review customer drawings for architectural and industrial aluminum profiles, including the section geometry, wall thicknesses, alloy, temper, finish and critical assembly tolerances. Send DWG, DXF or PDF drawings, or STEP, STP or IGS models. Our engineering team confirms feasibility before tooling. The numbered die drawing requires your written approval, and trial samples are checked and submitted for acceptance before bulk production.

Minimum order quantity is assessed by the total weight of each profile section and color, in kilograms or metric tons. Existing dies and mill-finish profiles generally allow lower minimums. New custom dies, special powder colors, wood-grain finishes and partner-provided anodizing require a review of die size, profile weight per meter and production setup losses. We confirm the minimum for your specification; no single quantity applies to every project.

Die fees depend on section size, complexity and required press tonnage. Payment is due after drawing approval and before die manufacture. Depending on the die, eligible fees can be refunded when orders for that profile reach an agreed cumulative threshold, generally 5–20 metric tons. We confirm the terms for each die. If a trial does not meet the approved drawing, we correct or remake the die at no charge for that correction. Customer design changes after approval may incur additional costs.

For standard dies, die manufacture and the initial extrusion trial usually take 7–15 days after drawing approval and receipt of the die fee. Section complexity, die size, press scheduling and further adjustments can affect this timing. We share trial results and any revised trial date. Bulk production is scheduled after sample approval and receipt of the deposit. Its lead time is confirmed based on the order quantity and final production plan.

Yes. Explain the application, required dimensions, finish and estimated quantity. You can send a complete profile sample approximately 15–30 cm long or longer. Alternatively, provide a clear end-on cross-section photo alongside a ruler, a dimensioned sketch and details of the mating components. Our engineers can help prepare a drawing from this information. Your written approval of the final numbered drawing is required before a new die is made.

Standard samples from existing dies and standard color sample panels are available free of charge. Courier charges are normally paid by the customer on a freight-collect basis. For a new custom die, trial extrusion samples are provided free of charge after the die fee is paid. Samples requiring additional fabrication or special surface finishing are quoted separately based on the work involved and actual project cost.

Custom die fees are payable in full after you approve the die drawing and before tooling begins. Bulk orders normally require a deposit to schedule production, with the balance paid before dispatch or container loading. Payment percentages and milestones depend on the project and trade terms and are specified in the formal quotation and sales contract.

Guantian arranges protective film, EPE foam, kraft paper or shrink-film packaging, shipping marks, forklift loading and cargo securing at the factory. You may appoint a freight forwarder to collect from the factory or ask us to help coordinate logistics and export customs clearance. Confirm any special packaging before placing the order, including custom wooden crates made from fumigation-exempt materials, steel racks or packaging organized by building floor.

Keep the original packaging labels and provide the order number, production batch number, photographs of the affected areas and measured dimensions. Our quality team will retrieve the retained samples and outgoing inspection records for review within 24 hours. If a manufacturing defect or dimensional nonconformity is confirmed, we will promptly arrange the appropriate replacement or rework.