Custom Engineering Since 2004
Custom Engineered Fixed Ladders.
Two design engineers on every project, structural calcs included. Send drawings for a free review — quote within 24 hours.
Engineers Per Project
Quote Turnaround
Production Time
Rung Load Rating
Engineering & Fabrication
Custom Engineered Fixed Ladder
Every custom engineered fixed ladder is checked twice — once by the design engineer who calculates it, once by the fabrication engineer who welds it. That is the two-engineer rule.
Structural calculations with every order
Load cases for rungs, rails and cage are calculated and stamped into the doc pack.
Two design engineers per project
Independent review catches dimension and weld detail errors before steel is cut.
Custom fabricated to spec
Cut, drilled and welded from a dimensioned shop drawing approved by you.
Free drawing review
Send your sketches — our engineers review free and quote within 24 hours.
Certifications
Compliance & DoCumentation (OSHA/BS 4211/EN ISO 14122-4)
- OSHA 1910.27 — Full Compliance
- BS 4211:2005+A1:2015
- EN ISO 14122-4
- AS 1657
- Cal/OSHA Title 8
Documentation Package
Every custom engineered order ships with complete documentation — no extra cost, no paywall.
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Declaration of Conformity (DoC)
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Material Test Certificates — EN 10204 3.1
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Structural Calculations
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Welding Procedure Specifications
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Surface treatment certificates (HDG per ISO 1461)
Engineered Dimensions
Custom Engineered Fixed Ladder Specifications & Dimensions
Our standard design envelope for custom engineered ladders. Each value is recalculated for your site loads and geometry before production.
Request your engineered quote| Specification | Standard Range | Custom |
|---|---|---|
| Height | 10 – 25 ft (3 – 7.6 m) | Up to 40 ft engineered |
| Material | Q235B / SS304 / SS316 | Duplex / 6063-T5 AL |
| Rung Diameter | Φ20 mm (0.79″) | Per spec |
| Rung Spacing | 280 mm / 11″ (≤300 mm) | Per project spec |
| Clear Width | 500 mm (19.7″) | Custom width |
| Cage Diameter | Φ700 mm (27.5″) | Custom |
| Load Rating | 1.5 kN per rung | Engineered |
| HDG Thickness | 85 – 100 μm (ISO 1461) | Heavier coating |
| Finish | HDG / Pickled / Painted | Electropolish (SS) |
| Fall Protection | Cage or PFAS | Ladder safety system |
Fabrication Options
Custom Fabricated Fixed Ladder Options & Configurations
Material, finish and fall protection are all engineered per site — this is how they typically break down.
Factory-Direct Pricing
Factory-Direct Pricing & 24h Quote
Engineered custom work is quoted by weight and process. No markup layers, no middleman — just a line-item quote in 24 hours.
Custom quotation priced by weight & process. Industry reference: caged ladders ≈ USD 899–1,099/ton.
Common questions
Your geometry and site loads are calculated, not guessed: rungs, rails, cage and fixings are verified in a structural calc, and the ladder is fabricated from a shop drawing you approve before steel is cut.
Every project is checked twice - once by the design engineer who calculates it, once by the fabrication engineer who welds it - so dimension and weld-detail errors are caught before production.
CNC fabrication holds ISO 2768-mK - rung pitch ±2 mm, rail centers ±3 mm - with ISO 9606-1 certified welders, welds to ISO 5817 Level C and random dye-penetrant testing on critical joints.
By weight and process - material, machining, finishing and packaging itemized line by line in a 24-hour quote; caged ladders reference approximately USD 899-1,099/ton.
DoC, MTC 3.1 material certificates, weld records and the structural calculation sheet - all included free with every engineered order.
Engineered, Not Assembled
How Custom Engineered Ladders Are Built
Two design engineers review every project. Fabrication is planned around your structure, with structural calcs free on every custom engineered order.
Engineering review
Feasibility, loads and code checked within 4 hours of enquiry.
Structural calculation
Free calcs for rung load, cage fixings and mounting points.
Fabrication planning
CNC cutting, bending and welding sequenced per shop drawing.
Pre-assembly & sign-off
Trial assembly, dimensional check, then documented shipment.
Drawing Review — What Our Engineers Verify
Load path & fixings
We check how the ladder transfers load to your wall or structure, and size anchors and brackets accordingly.
Height & fall protection trigger
OSHA 1910.27, BS 4211 or EN ISO 14122-4 — we tell you exactly when a cage, well or safety system is required.
Interference & clearances
Pipes, beams and existing structures near the climb path are flagged in the review notes.
Access & egress detail
Top landing, gate or walk-through details are engineered to your platform layout.
Material & Finish Options
Q235B structural
HDG per ISO 1461, 85–100 µm — engineered for outdoor loads.
SS304 / SS316
For washdown, pharma and marine — full MTC traceability.
Aluminum
Engineered on request for weight-critical installations.
Tolerances & Free Structural Calcs
CNC fabrication holds ISO 2768-mK tolerances — rung pitch ±2 mm, rail centers ±3 mm. Welders are certified to ISO 9606-1 and welds meet ISO 5817 Level C, with random dye-penetrant testing on critical joints. Structural calculations are included free with every engineered order.
Custom Engineered Ladder Checklist
Give our engineers these six details for an accurate 24-hour quote.
- 1
Total height & rung count
Climb height from footing to landing.
- 2
Width
Side-rail centers, 500 mm standard.
- 3
Clearance & obstacles
30 in climbing-side clearance, existing obstructions noted.
- 4
Access point
Roof, platform, hatch or walk-through.
- 5
Load requirement
1.5 kN standard; heavy-duty and fall-arrest engineered.
- 6
Surface finish & standard
HDG, SS or painted — and which code applies to your site.
Proven in real facilities
Reference projects are shown by industry, country and scale. Client names are available on request with approval.
National utility projects — 15+ countries
23 documented projects, 2021-2025 · 2025
All standardsEnergy & industrial clients — Global
500+ projects since 2004 · 2004-2025
Full compliance docsLargest single order — Malaysia
60 units in one project · 2021
HDGGet Your Quote
Talk to an Engineer
Free drawing review. Itemized quote in 24 hours. No obligation.
Why Work With Dengtai?
Full Compliance Docs
DoC, MTC, structural calcs included free.
24-Hour Quote
Engineering review + itemized quote within one day.
Global Delivery
8–12 containers/month. VCI + ISPM 15 packaging.
Request a Quote
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Pre-assembled trial fit before crating
Custom Fixed Ladder Supplier
OEM or ODM, factory audits welcome, flexible MOQ
Fixed Ladder Standards
OSHA 1910.27, BS 4211, EN ISO 14122-4 reference
ANSI Standards
Design criteria for fixed ladder strength
Talk to an Engineer
Free drawing review & itemized quote in 24 hours