Dengtai offers both OEM (Original Equipment Manufacturing) and ODM (Original Design Manufacturing) for steel ladders, platforms, and custom access solutions. This page explains the difference between the two models, who each is best for, and how to start an OEM or ODM project.
OEM — Build to Your Design
You provide engineering drawings (PDF, DWG, DXF). We manufacture to your exact specifications.
How it works:
- You send your engineering drawing with dimensions, material specifications, tolerances, and standards references
- Our engineer reviews for manufacturability (not design — that’s your responsibility)
- We confirm any questions or suggested improvements (if your design has manufacturability issues, we flag them)
- You approve the review. We manufacture to your drawing exactly as specified
- QC documentation verifies conformance to your drawing
Typical OEM clients: Engineering firms, EPC contractors, equipment manufacturers with in-house ladder design capability who need a manufacturing partner.
OEM details:
- MOQ: 5 units
- Lead time: 15-25 working days from drawing approval (no design time needed)
- Your responsibility: Design accuracy, drawing completeness, standard compliance
- Our responsibility: Manufacturing per your drawing, QC documentation, packaging
- Cost: Lower than ODM (no engineering design cost)
- Drawing formats accepted: PDF, DWG, DXF, STEP (3D)
ODM — We Design and Build
You provide requirements. Our engineer designs the solution. You approve the drawing. We manufacture.
How it works:
- You describe your requirements: access need, height, environment, applicable standard, any constraints
- Our engineer designs the ladder system: dimensions, material selection, bracket layout, cage configuration
- We produce CAD drawings (2D dimensioned) for your review and approval
- You approve the design or request revisions (typically 1-2 revision cycles)
- Once approved, we manufacture to the approved drawing
- Full documentation package verifying design and manufacturing compliance
Typical ODM clients: Project owners, facility managers, procurement agents without in-house design capability. Also EPC contractors who prefer to specify requirements and let the manufacturer handle detailed design.
ODM details:
- MOQ: 5 units
- Lead time: 30-45 working days (includes engineering design + drawing approval cycle)
- Your responsibility: Define requirements clearly; review and approve drawings
- Our responsibility: Design, engineering calculations, manufacturing, QC documentation
- Cost: Higher than OEM (includes engineering design time, typically 8-16 hours depending on complexity)
OEM vs ODM Comparison
| Aspect | OEM | ODM |
|---|---|---|
| Design source | Client’s engineering team | Dengtai engineering team |
| Drawing source | Client-provided (PDF/DWG/DXF) | Dengtai-produced (CAD) |
| Engineering included | Review for manufacturability only | Full design + structural analysis + CAD |
| Lead time | 15-25 working days | 30-45 working days |
| MOQ | 5 units | 5 units |
| Cost | Lower (manufacturing only) | Higher (manufacturing + engineering) |
| Best for | You have detailed drawings and need a manufacturer | You have requirements but not detailed design |
| Design responsibility | Client | Dengtai |
| Manufacturability review | Included | Included |
| Documentation | Manufacturing QC only | Design calcs + manufacturing QC |
| Revisions | Client provides revised drawings | Revisions included in engineering cycle |
Common OEM/ODM Projects
- OEM examples: EPC contractor provides isometric drawings for 50+ refinery ladders; equipment manufacturer specifies ladder dimensions to integrate with their machinery; competitor replacement — “make us ladders matching these specifications”
- ODM examples: Facility owner needs roof access for a 15m building — “design the right solution”; procurement agent sourcing for a mining project in Ghana — “we need SS316 ladders, 8m, meet SANS standards”; developer building a commercial complex in Dubai — “design OSHA-compliant roof access for 5 towers”
Frequently Asked Questions
What is the minimum order quantity for steel ladders?
Standard models: 1 unit. Custom-engineered ladders: 5 units minimum. This is one of the lowest MOQs in the Chinese steel ladder manufacturing industry. Most competitors require 10-20 units.
What payment terms does Dengtai accept?
Standard terms: T/T 30% deposit with 70% balance before shipment. For orders exceeding $10,000, L/C at sight is available. We do not accept D/A or open account terms for first-time buyers.
How long does delivery take?
Standard models ship within 15-20 working days of order confirmation. Custom or bulk orders require 30-45 working days. Ocean freight transit adds 15-35 days depending on destination.
What compliance documentation is provided?
Every order includes: Certificate of Origin (CCPIT-issued), Commercial Invoice, Packing List, Bill of Lading, material certificates (EN 10204 Type 3.1), weld inspection reports (ISO 5817), coating thickness reports, dimensional conformance report, and Declaration of Conformity. Additional documentation (Form A/E, fumigation cert, CE/UKCA package) available on request.
Can I get a sample before placing a bulk order?
Yes. Standard model samples can be shipped for evaluation. Freight cost is borne by the buyer (FedEx/DHL). The sample cost is refunded against your first production order.
What is the warranty on Dengtai ladders?
5-year manufacturing defect warranty. Corrosion warranty by material: HDG 2 years, SS304 5 years, SS316 10 years. After-sales: 48-hour response to any issue. If a dimensional error is our fault, we bear the full replacement cost including freight.
How do I start the ordering process?
Send your specification to sales@dtsteelladder.com including: ladder type, height, material, quantity, destination port, and applicable standard. Receive a detailed quotation within 24 hours.
The Dengtai Procurement Process
When you source steel ladders from Dengtai, the process follows six clear stages:
Stage 1: Inquiry and Specification — Send your requirements (ladder type, height, material, quantity, destination port, applicable standard) to sales@dtsteelladder.com. Our engineering team reviews your specification and returns a line-item quotation within 24 hours.
Stage 2: Engineering Review — Senior Engineer Jouth Zhao reviews technical feasibility. For standard products, we confirm the specification. For custom products, we return CAD drawings for your approval. This stage typically takes 1-3 business days.
Stage 3: Order Confirmation — 30% T/T deposit confirms your order. For orders over $10,000, L/C at sight is available. Production scheduling begins immediately upon deposit receipt.
Stage 4: Production and QC — Standard models: 15-20 working days. Custom/bulk: 30-45 working days. Our five-step QC process runs throughout: (1) raw material certification verification, (2) ISO 5817 weld inspection at each joint, (3) coating thickness measurement per ISO 2808, (4) pre-assembly fit check with bracket matching, (5) VCI + vacuum-sealed packaging inspection.
Stage 5: Pre-Shipment Review — Before shipment, you receive: QC documentation package (material certs, weld reports, coating reports, dimensional conformance), container loading photographs, and the container seal number. Review and approve before we release the shipment.
Stage 6: Shipment and Delivery — Container loaded at Tianjin port. Shipping documents sent via courier. Customs clearance support documentation provided. After-sales: 48-hour response to any question or issue.
Raw Material Cost Breakdown
Understanding the cost structure of a steel ladder helps buyers evaluate whether a quotation is reasonable and where value engineering opportunities exist.
Material Cost Per Tonne (2026 Indicative)
| Material | Raw Material | Fab Cost | Labor | Surface Treatment | Total/tonne |
|---|---|---|---|---|---|
| Q235B HDG | $692 | $180 | $210 | Included in fab | $1,082 |
| Q345B HDG | ~$750 | $200 | $230 | Included in fab | ~$1,180 |
| SS304 | $2,538 | $400 | $480 | Passivation ~$150 | ~$3,568 |
| SS316 | $4,615 | $600 | $850 | Passivation ~$200 | ~$6,265 |
A standard 6m caged ladder (CL-HDG-STD) weighs approximately 80-100 kg depending on configuration. At Q235B HDG total cost of ~$1,082/tonne, the material cost is approximately $87-108. The remaining cost in the $180 retail price covers direct labor, factory overhead, packaging, compliance documentation, and margin.
Pricing Formula for Custom Orders
For large-volume or custom orders (>100m total length), Dengtai uses the formula:
Price = Material Cost + Sheet Metal Processing + Labor + Surface Treatment + 15% Margin
This transparent pricing methodology allows buyers to understand what drives cost and identify opportunities for value engineering:
- Wider rung spacing (300mm standard): No cost change — standard spacing is already optimized
- Non-standard width: Proportional material increase
- Different material grade: Cost changes per the raw material differential above
- Additional surface treatment (duplex coating, special paint): Incremental cost quoted separately
- Volume discount: Applied progressively based on total project quantity
Request a line-item quotation to see the cost breakdown for your specific specification.
Lead Time Management and Optimization
Factors That Extend Lead Time
| Factor | Impact | Mitigation |
|---|---|---|
| Custom engineering | +15-25 working days | Provide complete specifications upfront; approve drawings promptly |
| Non-standard material procurement | +7-15 working days | Use in-stock materials where possible (Q235B, Q345B, SS304, SS316 are standard stock) |
| High order volume (>500m) | +10-20 working days | Split production lots if partial delivery is acceptable |
| Peak season (Aug-Oct) | +5-10 working days | Order in Q1-Q2 for Q4 delivery |
| Third-party inspection scheduling | +3-7 working days | Book the inspector when production starts, not when complete |
| Classification society involvement | +10-20 working days | Engage the surveyor at the drawing approval stage |
Lead Time by Product Category
| Product Category | Standard Lead Time | Notes |
|---|---|---|
| Standard fixed ladder (FL series) | 15 working days | 1-50 units; for >50 add 5 days per additional 50 |
| Standard caged ladder (CL series) | 15-20 working days | Cage fabrication adds 0-5 days |
| Multi-section caged ladder | 20-25 working days | Platform fabrication and pre-assembly check add time |
| Custom ladder (CS-ENG) | 30-45 working days | Includes engineering, drawing approval, custom fabrication |
| Accessories only (brackets, hoops) | 10-15 working days | Shorter if combined with ladder order |
| Spare parts | 5-7 working days | In-stock parts ship immediately |
Rush orders: For time-critical projects, we can evaluate rush production. Rush orders typically add 15-25% to the product cost and reduce lead time by 5-10 working days for standard products. Rush production is subject to current production schedule availability.
Quality Documentation Package Details
Every Dengtai order ships with a comprehensive quality documentation package. Here is the detailed content of each document:
1. Material Certificates (EN 10204 Type 3.1)
- Steel mill name and country of origin
- Heat number (links to specific production batch)
- Chemical composition analysis (C, Si, Mn, P, S, Cr, Ni, Mo for stainless)
- Mechanical properties (yield strength, tensile strength, elongation)
- Impact test results (if specified)
- Third-party inspection body verification (if specified)
2. Weld Inspection Report
- WPS (Welding Procedure Specification) reference
- Welder qualification certificate reference
- Weld map showing inspection points by joint number
- Visual inspection results per ISO 17637
- NDT results if specified (PT/MT/UT per project requirements)
- Acceptance criteria: ISO 5817 Level C (standard) or Level B (stringent)
3. Coating/Plating Report
- HDG Coating Thickness: Measured per ISO 2808 (magnetic method), minimum 5 readings per ladder section, target >80um average, no single reading <56um per ISO 1461
- Stainless Surface: Passivation certificate per ASTM A380, surface roughness measurement (target Ra 0.4-0.8um for #240 brushed finish)
- Visual inspection: Uniform appearance, no bare spots, no lumps, no ash deposits
4. Dimensional Conformance Report
- Overall length: Measured to +/- 10mm
- Width (inside stile): Measured to +/- 5mm
- Rung spacing: Measured at 5 points, all to be 300mm +/- 3mm
- Cage hoop diameter: Measured at 3 hoops, to be 800mm +/- 5mm
- Cage hoop spacing: Measured at 3 intervals, to be 300mm +/- 5mm
- Top extension: Verified 1,100mm above last rung
5. Pre-Assembly Fit Check Report
- Bracket-to-stile fit verification (all brackets trial-assembled)
- Section-to-section flange alignment check (multi-section ladders)
- Platform-to-ladder interface verification
- Photographs of pre-assembly setup
6. Packaging Verification Report
- VCI wrapping confirmation per MIL-B-22020
- Vacuum seal integrity check
- Pallet/crate construction and ISPM 15 stamp verification
- Individual component identification tag verification
After-Sales Support Commitment
Dengtai’s commitment extends beyond delivery:
48-Hour Response Guarantee: Any question, issue, or support request receives a substantive response within 48 hours (business days). For urgent issues, WhatsApp provides same-day response.
Warranty Coverage: 5 years against manufacturing defects. If a manufacturing defect is confirmed, we replace the affected components at our cost including freight. The warranty covers: structural failure of welds or materials under rated load, coating failure (HDG delamination, premature corrosion beyond the rated environment), and dimensional non-conformance to the approved drawing. The warranty excludes: damage from misuse or overloading beyond rated capacity, damage from modification after delivery, and normal wear of sacrificial coatings in rated environments.
Spare Parts Availability: We maintain an inventory of standard components (brackets, cage hoops, rungs) for all current models. Spare parts ship within 5-7 working days. For custom components, we maintain CAD records and can re-manufacture to the original specification within 15-20 working days.
Installation Support: Installation manuals are provided with every shipment. For large projects, we offer remote installation support via video call (complimentary) or on-site supervision (quoted separately based on location and duration).
Annual Check-In (Large Projects): For projects exceeding $20,000, we offer a complimentary annual check-in: an email review of the installation condition, any operational feedback, and future requirements. This maintains the relationship and identifies repeat business opportunities.
Start OEM/ODM Project
Send your drawings (OEM) or requirements (ODM). 24-hour engineer review with feasibility assessment and cost estimate.
Email: sales@dtsteelladder.com
WhatsApp: +86 155 1187 9488
Submit Project → | Custom Engineering Products → | Customization Process →
****：OEM/ODM。OEM()：，，/EPC，15-25，。ODM()：，，/，30-45()，。、、、、。OEM/ODM。
</script>