Sourcing Doors and Windows from China: Interior, Entry, Aluminum

Doors and windows are structural elements, not decor: a wrong frame size, swing direction, or glass class is not a cosmetic problem — it is a construction problem that means redoing the opening. At the same time, the price gap between China and local markets is among the widest in this category: a quality thermal-break aluminum profile, a steel entry system, or a solid-wood interior door typically cost 30–50% less than equivalent items from local dealers. Outfitting a villa or hotel — 20–40 door units and dozens of windows — turns that gap into tens of thousands of dollars saved per project.

But the category demands precise technical tolerances at the specification stage: any mismatch in profile thickness, glass type, or hardware surfaces during installation, when it’s nearly impossible to fix. Here’s how to source doors and windows from China without losses.

Three categories: what they’re made of

Interior doors

An interior door panel is a sandwich of facing (veneer, eco-veneer, PVC/CPL film, lacquer) and core fill. Core fills vary sharply in quality:

• Honeycomb (paper core) fill — the cheapest option, a light panel, but a hollow sound and risk of warping in high humidity.
• Solid MDF fill — the standard for mid-range and premium doors, panel thickness 40–45 mm, weight 20–25 kg per leaf.
• Solid wood (oak, ash, doussie) — premium segment, panel from 40 mm thick, requires wood moisture content controlled at 8–12% during manufacturing, or the panel warps after shipping into a different climate.

Entry doors

A steel entry system is not just the panel — it’s a frame with a thermal break (relevant for projects in cold-climate countries — Kazakhstan, the CIS, Europe). Key parameters:

• Panel steel thickness 1.5–2 mm, frame 2–3 mm; below 1.2 mm risks deformation in transit.
• Insulation — mineral wool or PU foam, total door thickness 80–100 mm.
• Locks — multi-point locking (3–5 points); for projects with elevated security needs, no lower than RC2 under EN 1627.
• Coating — powder coating 60–80 microns; coastal projects require an anti-corrosion primer.

Aluminum windows and sliding systems

Aluminum profile is the primary material for panoramic glazing on villas and hotels: sliding doors, windows, curtain-wall systems. In China the industrial standard is set by major profile manufacturers (Xingfa, Guangya, and similar), which offer both thermal-break lines (polyamide inserts in the profile) and non-thermal-break lines.

• Non-thermal-break profile — 20–30% cheaper, suited to warm climates (Thailand, Bali, UAE) with no freezing or condensation risk.
• Thermal-break profile — mandatory for projects with sub-zero winter temperatures, or condensation and ice form on the frame.
• Sliding systems (slim sliding, lift-and-slide) — narrow 40–60 mm frames for panoramic views, requiring stainless steel roller mechanisms (grade 316, not 304, for coastal projects — otherwise salt-air corrosion sets in within 6–12 months).

Table: categories, materials, savings

Category	Material/thickness	Key parameter	Savings vs. local prices
Interior doors	MDF 40–45 mm / solid wood	Wood moisture 8–12%	up to 50%
Entry doors	Steel 1.5–2 mm, 80–100 mm insulation	RC2 security class, 3–5 point lock	up to 40%
Aluminum windows/sliding	40–60 mm profile, with/without thermal break	IGU glazing, 316 stainless rollers	up to 35%
Insulated glass units (IGU)	Double/triple pane, Low-E	Tempered glass from 5 mm	up to 30%

Glass and glazing: what to check

Most standards require tempered glass at least 5 mm thick for sliding doors, floor-to-ceiling windows, and balcony glazing — ordinary float glass shatters into sharp shards on impact. An insulated glass unit (IGU) with Low-E coating and a 9–12 mm air gap cuts heat transfer and, critically for tropical climates, the solar heat gain coefficient (SHGC) — without it, panoramic glazing turns a room into a greenhouse. For coastal projects, add a UV-resistance requirement: the PVC spacer in an IGU yellows within 2–3 years without a UV stabilizer.

Certifications and HS codes

Doors and windows are declared under different codes depending on material:

Category	HS code (indicative)
Wooden doors and frames	4418.20
Steel doors and windows	7308.30
Aluminum doors, windows and frames	7610.10
Tempered safety glass	7007.19

Duty depends on the destination country and code — rates on metal and aluminum structures are usually higher than on wooden ones, and VAT is added on top (7% in Thailand, 5% + 5% duty in the UAE, 11% in Indonesia, varies across the EU). Verify exact rates against your destination country’s classifier before placing an order.

Logistics: why doors and windows don’t tolerate LCL shortcuts

Doors and windows are simultaneously heavy, fragile, and oversized cargo: IGUs fear impact and temperature swings, aluminum profile fears deformation from incorrect stacking. Even at a modest volume (5–10 door units), it’s smarter to consolidate into your own container (see FCL or LCL) with individual crating and vertical bracing for glass units — stacking glass horizontally in shared consolidated cargo almost guarantees breakage during transshipment. Standard transit is 30–45 days by sea after production, and custom doors and windows typically need another 25–35 days to manufacture.

Mini-case: sliding doors on a beachfront villa

A client building a beachfront villa in Thailand ordered aluminum sliding systems from a factory without specifying the roller and hardware grade — the specification simply said “stainless steel.” The factory shipped standard grade-304 hardware. After eight months in salty sea air, the rollers began rusting and sticking, and the doors could no longer be moved without force.

The root cause: coastal projects need grade 316 (marine stainless), which resists chlorides, while grade 304 corrodes in that environment within 6–12 months. Replacing the rollers and seals across all 14 door units cost $3,800 and required removing finished reveals. Dream View’s rule: for coastal and humid projects, the hardware steel grade (304 or 316) is fixed in the specification before production — never left as a generic “stainless steel” line.

Pre-shipment acceptance: what gets checked

• Frame and panel geometry — diagonal tolerance no more than 2–3 mm, or the door won’t fit the opening without on-site trimming.
• Smooth operation — hardware and rollers tested through 20–30 open/close cycles without sticking.
• Glazing — spacer bar markings (thickness, glass type), no chips along the edges, sealed seams.
• Coating — powder coating checked for adhesion (cross-cut test) and layer thickness.

More on how a pre-shipment inspection is organized, and why it pays to approve a golden sample before production starts.

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Doors and windows are rarely ordered separately from the rest of a project’s finishes — see more on complete villa or hotel outfitting and other building materials from China.

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Planning doors and windows for a villa, home, or hotel? Send us your opening drawings and specification — we’ll shortlist factories, lock in the hardware and glass grade, and quote production, shipping, and customs clearance for free.