Interior Doors Factory in China | Bathroom & Glass Door Specs

ROGENILAN operates a 14,000 m² interior doors factory in Foshan, China, producing aluminum-framed interior doors for residential, hospitality and multi-unit projects. Annual output exceeds 80,000 door leaves, with default MOQ 20 sets and 25-35 day lead time for standard configurations. This article documents pricing, material specs, bathroom door moisture resistance, arch doors interior custom geometry, interior glass door glazing options, certifications, and procurement parameters for international buyers.

Interior Doors Pricing Structure by Material and Configuration

Pricing below covers doors for houses interior applications — bedroom, bathroom, kitchen and closet openings — using thermal break aluminum frames. All prices are FOB Foshan in USD per square meter of door leaf, exclusive of hardware upgrade and special finish surcharge.

Aluminum vs Wood vs Composite Pricing Table

Volume Discount Tiers and MOQ Structure

MOQ 20 sets for standard configurations; custom finishes and arch geometry raise MOQ to 50 sets. Payment terms: 30% T/T deposit, 70% balance against copy of B/L. L/C at sight accepted above 500 sets. Standard export packaging: individual carton + EPS corner protectors + 4 sets per wooden crate (ISPM-15 heat-treated pine).

Aluminum Alloy Specifications and Production Process

Interior doors factory uses 6063-T5 aluminum billet (Al-Mg-Si alloy, tensile strength ≥ 180 MPa, yield ≥ 145 MPa, hardness 8–12 HW). 6060-T6 used for thicker cross-sections requiring higher stiffness (yield ≥ 215 MPa). Billet origin: China Hongqiao / Nanshan, with mill test certificate EN 573-3.

6063-T5 vs 6060-T6 Comparison

Powder Coating and Anodizing Parameters

Standard finish: AkzoNobel or Tiger Drylac polyester powder coating, thickness 60–80 μm, coating hardness 2H, salt spray resistance 1000 h (ASTM B117). Anodized finish optional, anodic oxide film 15–25 μm, AA15–AA25 per ISO 7599. Available color codes: RAL 9003 (signal white), RAL 9005 (jet black), RAL 7016 (anthracite grey), RAL 8019 (grey brown) + 30 wood-grain sublimation patterns.

Pre-treatment flow: degreasing → water rinse → chromating (Cr³⁺ RoHS) → water rinse → pure water rinse → dry → powder booth spray → 200°C cure for 12 min. Sublimation line: pre-heat 180°C, vacuum 0.06 MPa, transfer 4 min.

Bathroom Door Configurations and Moisture Resistance

Bathroom door configurations use 6063-T5 aluminum frame with EPDM gasket sealing (compression set < 15% after 72 h at 70°C), AISI 304 stainless steel hinges (3 sets per leaf for > 35 kg leaf), and moisture-resistant core (PP honeycomb or WPC board, water absorption < 1.5% per ISO 62). Standard leaf 0.9 × 2.1 m, 40 mm thick, leaf weight 18–22 kg.

Waterproof Hardware and Sealing Specs

Ventilation Louvers and Drainage Details

Bathroom doors include optional 200 × 60 mm aluminum ventilation louver (fixed blade, 30° angle, free area 0.012 m²) or 6 mm gap undercut for passive make-up air per ASHRAE 62.2. Threshold profile integrates a 3 mm drainage slope on wet-side edges; silicone weather-stripping rated for 100% RH at 40°C continuous exposure.

Arch Doors Interior Design and Custom Geometry

Arch doors interior use cold-bent 6063-T5 extrusion (bend radius ≥ 1.5 × profile height) with internal splice plates every 200 mm. Standard arch profiles: eyebrow (R = leaf width × 0.5), half-round (R = leaf width × 0.5, full 180°), Gothic pointed (two 45° segments), Tudor (flattened elliptical). Tolerance: ± 1.5 mm on arch profile, ± 0.5 mm on width.

Curved Frame Manufacturing Tolerance

Installation Jigs and Site Measurement Protocol

Each arch door order ships with site-specific installation jigs (3 mm ABS template, numbered to opening ID) and a measurement protocol: (1) record opening width at 3 heights (top, mid, bottom); (2) record arch chord and rise at 5 points; (3) square check diagonal ± 2 mm; (4) photo-document each opening. Lead time for arch orders extends to 35–45 days due to CAD drawing sign-off and bent profile setup.

Interior Glass Door Options and Glazing Specs

Interior glass door options combine 6063-T5 aluminum frame (1.4 mm wall) with 8–12 mm glass infill. Three glass types are stocked: tempered (EN 12150), laminated (EN 14449) and frosted satin (acid-etched). Standard leaf 0.85 × 2.1 m, weight 28–42 kg depending on glass thickness.

Tempered, Laminated and Frosted Glass Comparison

Aluminum Frame Profile for Glass Inserts

Glass-retaining profile uses EPDM glazing gasket (double wedge), 8–12 mm glass accommodation range, retained by snap-on aluminum bead (no exposed screws). Frame depth 40 mm standard, 60 mm for double-glazed acoustic interior doors. Hardware: concealed European-style hinges with 6 mm glass clamp plate, max load 60 kg per pair.

Technical Performance and Certifications

Wall Thickness, U-Value and Acoustic Ratings

CE, NFRC, ISO 9001 and SGS Test Reports

Standard certifications: CE per EN 14351-1 (doorsets for pedestrian doors); NFRC label (U-factor, SHGC, VT for glazed doors); ISO 9001:2015 quality management; ISO 14001:2015 environmental management; SGS third-party inspection per batch; RoHS compliance for hardware (Cr⁶⁺ free). Optional: AAMA 2604 powder coating durability, Miami-Dade NOA for hurricane-zone projects (interior door with exterior exposure). Test reports available on request.

Installation, Packaging and Procurement

Pre-Hung Frame Installation Steps

1. Verify rough opening: width = leaf + 60 mm, height = leaf + 35 mm, square ± 3 mm.
2. Position pre-hung frame in opening, shim at 6 points (top, mid, bottom × 2 sides), max shim gap 6 mm.
3. Fasten frame to stud with #10 × 65 mm drywall screws at 400 mm o.c., countersunk.
4. Insulate gap with low-expansion polyurethane foam (PUR 1-component), no overfill.
5. Hang leaf on hinges, adjust gap to 3 mm uniform, verify operation cycle ≥ 50,000.
6. Install strike plate, latch engagement ≥ 8 mm, test key turn torque ≤ 2 N·m.
7. Apply silicone perimeter seal interior side, tool joint, cure 24 h before paint.

Packaging, Lead Time and Payment Terms

Project Case: 320-Set Apartment Interior Door Supply

Configuration and Landed Cost Breakdown

Q1 2026 supply to a Phuket apartment developer: 320 sets of 0.9 × 2.1 m aluminum interior doors (180 bedroom, 110 bathroom, 30 closet). Configuration: 6063-T5 1.4 mm wall, white RAL 9003 powder coat, PP honeycomb core, SUS 304 hardware, frosted glass panel on bathroom doors (200 × 600 mm).

Comparison vs Local Supplier Procurement

Total project savings on 320 sets: USD 33,664 (22% below local procurement), with thicker wall, higher hinge count, and 5-year warranty vs local 1-year. Project specification, factory QC photos, and SGS inspection report (No. SGS-FS-2026-Q1-0451) are available on request. See aluminum doors and windows manufacturer and aluminum door factory pages for related product lines, and the wintergarten wholesale page for glazed structure specs.

Procurement Checklist Summary

• Confirm opening dimensions, squareness, and finish schedule before order placement.
• Select alloy grade (6063-T5 standard, 6060-T6 heavy-duty) and wall thickness (1.2–2.0 mm).
• Specify finish: powder coat RAL color + 60–80 μm thickness, or anodized AA15–AA25.
• Choose core: PP honeycomb (lightweight), WPC (moisture), mineral (fire-rated) — match to room use.
• Specify glass: tempered (bedroom), laminated (partition), frosted (bathroom).
• Lock in certifications required by destination market (CE / NFRC / Miami-Dade).
• Confirm MOQ 20 sets, 30% T/T deposit, 70% balance against B/L copy, ISPM-15 packaging.
• Request SGS pre-shipment inspection, mill test certificate, and 5-year warranty terms.

ROGENILAN factory in Foshan, China produces interior doors with 6063-T5 thermal break frames, SUS 304 hardware, and CE/NFRC/ISO 9001 certifications. Contact the factory for project-specific pricing, sample requests, and CAD drawings.