DERCHI Entry Doors Manufacturing and Project Engineering FAQ
Technical Knowledge Base

Frequently Asked Questions

Engineering standards, quotation parameters, global logistics, and building code compliance for North American architects, builders, and developers.

B2B Buyer Knowledge Hub

Engineered Door Solutions: North American Inquiries

Review key information about manufacturing standards, production parameters, export crating, and on-site engineering support.

Q1: Is DERCHI a direct door manufacturer or a trading company?

Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) is an authentic direct manufacturer with over 25 years of technical expertise in custom architectural door systems, luxury pivot systems, and commercial entrance assemblies.

Manufacturing Scale: 180,000 m² integrated production base, 600+ skilled personnel, fully automated CNC cutting, machining, assembly, and multi-stage testing centers.

By eliminating overseas brokers and middlemen, we provide North American general contractors, architects, and real estate developers direct factory wholesale pricing, transparent production schedules, stringent material traceability, and bespoke OEM/ODM engineering collaboration.

Q2: What is your primary product catalog for global projects?

We manufacture architectural, thermally efficient, and high-security door systems engineered to endure demanding environmental criteria and stringent regional building codes across the USA and Canada:

  • Aluminum Entry & Pivot Doors: Thermally broken extruded profiles, flush structural panels, oversized pivot doors with German concealed pivot hardware, and minimalist architectural sightlines.
  • Cast Aluminum Entry Doors: Heavy-duty solid cast panels featuring three-dimensional relief styling, architectural patinas, and reinforced composite cores engineered for estate residences.
  • Glass Entry Systems: Structural tempered and laminated safety glass doors, oversized entrance pivots, Low-E argon insulated glazing, and acoustically sealed frames.
  • Stainless Steel Entry Doors: Marine-grade 304/316 stainless steel security entrances, high-impact multi-point locking mechanisms, and brush/mirror PVD architectural coatings.
  • Specialty Architectural Systems: UL-certified fire-rated assemblies, commercial storefronts, heavy-duty interior timber doors, and sectional insulated overhead garage door systems.

With an established distribution network in North America and major global commercial markets, DERCHI delivers engineering consistency for high-value residential and mixed-use installations.

Q3: How do I request an accurate B2B wholesale quotation for my project?

Because each architectural opening involves project-specific structural, acoustic, and thermal requirements, our pricing is prepared by project engineers rather than standard price lists. To obtain an exact proposal with structural shop drawing validation, submit the following:

Recommended Quotation Data:
  • Architectural plans, rough opening schedules, or elevation drawings (CAD, DWG, PDF).
  • Material profile preferences and finishes (AkzoNobel powder coating, anodized, PVDF, or wood grain sublimation).
  • Glazing parameters (dual/triple insulated Low-E, acoustic laminated, frosted, or impact-resistant).
  • Hardware and access control preferences (German multi-point locks, motorized smart locks, keyless entry, commercial exit bars).

Our sales engineering team operates with North American time zone coverage (EST to PST) and supplies itemized FOB/CIF commercial proposals within 24 to 48 hours.

Q4: What is your standard manufacturing lead time and delivery schedule?

Our production schedule is structured around contractor project milestones:

  • Standard Architectural Orders: 25 to 35 calendar days following receipt of deposit and formal digital sign-off on detailed CAD shop drawings.
  • Custom Dies & Bespoke Assemblies: 35 to 45 calendar days when custom extrusion dies or specialized European locking hardware must be integrated.
  • Phased Commercial Shipments: For multi-family or large commercial developments, we establish sequenced batch schedules matching framing and drywall completion on your critical path.

Every unit is encased in custom IPPC-certified solid plywood crates engineered for multi-modal ocean and intermodal freight directly to North American coastal and inland ports.

Q5: What warranty coverage does DERCHI provide for international shipments?

Every DERCHI door exported to the United States and Canada is backed by a 10-year manufacturer warranty protecting your investment:

Warranty Parameters: Coverage encompasses structural frame integrity, corner joint durability, thermal break composite stability, and surface coat delamination or excessive chalking under normal atmospheric conditions. Core operating hardware (pivot hinges, multi-point lock bodies, gas struts) carries certified multi-cycle commercial guarantees.

In the rare event of transit damage or manufacturing deviation, our project management team issues expedited express replacement hardware or structural components to keep your installation schedule on track.

Q6: What post-purchase support and installation guidance do you offer?

Guangdong Dejiyoupin Doors and Windows Co., Ltd. ensures continuous engineering collaboration throughout the delivery and construction lifecycle:

  • Engineering Documentation: Pre-drilling templates, sub-sill flashing guidelines, anchor bolt spacing plans, and detailed fastener schedules tailored to wood-stud, steel-stud, or CMU masonry substrates.
  • Digital Media & 3D Guides: Step-by-step video tutorials and exploded-view CAD assembly sheets demonstrating pivot adjustment, perimeter weather-stripping installation, and multi-point balance calibration.
  • Remote Technical Consultation: Real-time video conferencing between DERCHI senior facade engineers and your field supervisors or glazers during installation.
  • On-Site Supervision: For major commercial or luxury estate developments, DERCHI technical specialists can be dispatched on-site for structural installation review.

Q7: Do your door systems comply with North American and international building codes?

Yes. Compliance with strict North American performance criteria forms the foundation of our engineering process:

Tested Performance Metrics: Our assemblies meet AAMA/WDMA/CSA 101/I.S.2/A440 standards for air infiltration, water penetration resistance, and structural uniform load. Glass panels are SGCC certified for safety glazing (ANSI Z97.1 / CPSC 16 CFR 1201), and thermal performance parameters align with NFRC thermal standards for U-Factor and Solar Heat Gain Coefficient (SHGC).

We also hold CE, ISO 9001, AS 2047 cyclonic testing credentials (N6 maximum rating), and UL-certified fire-rated assemblies. Full test reports and third-party laboratory verification can be provided during your submittal phase to secure straightforward permit approval from local building departments.

Have a Custom Door Schedule or Specification In Hand?

Our bilingual facade engineers will evaluate your architectural plans, ensure code compliance, and prepare free CAD shop drawings with an itemized factory quotation.