LadderCageWall-Fixed Tank Access, Factory Direct
Storage Tank Cage Ladder
Storage and petrol tank cage ladders - SS304 or galvanized, wall-fixed for tank access. EN ISO 14122-4 & OSHA compliant; DoC, mill certs and structural calc included.
Projects Delivered
Countries Exported
Quote Response
Max Single Run
Material Options
Tank Cage Ladder Options - SS304, SS316, Galvanized
Tank-top environments demand corrosion resistance - pick the grade that matches your tank farm site.
- SS304 / SS316
Corrosion-resistant stainless for chemical, coastal and wash-down tank sites
- Hot-Dip Galvanized
Q235B with HDG 85–100 μm per ISO 1461 - value for general outdoor tank farms
- Q345B Heavy Duty
For large storage tanks and high-load access, with structural calcs
| Option | Best For | Finish |
|---|---|---|
| SS304 | Chemical, food-grade tanks | Acid-pickled, passivated |
| SS316 | Coastal, chloride exposure | Acid-pickled, passivated |
| HDG Q235B | General tank farms | HDG ISO 1461 85–100 μm |
Wall-Fixed Tank Access
Petrol Tank Cage Ladder - Wall-Fixed Access
Wall-fixed fixing that does not damage the tank shell - engineered for curved and flat tank walls, with a structural calculation sheet on every order.
- Non-Penetrating Wall Fixing
Brackets engineered for tank walls without damaging the shell
- Fits Curved & Flat Walls
Adapts to cylindrical storage tanks and flat tank-farm structures
- Structural Calc Verified
Fixings verified by engineer-signed structural calculation
Compliance & Project Backing
Compliance - DoC, Mill Certs & Structural Calc
Storage and petrol tank cage ladders ship with the full compliance file and petrochemical project backing.
- DoC & Mill Certs
EN ISO 14122-4 & OSHA compliant; mill certificates with every order
- Free Structural Calculation
Engineer-signed for your tank height and wall fixing
- Petrochemical Track Record
Q345B heavy-duty tank access for offshore and tank-farm programs - references available on request
Factory-Direct & Lead Time
Factory-Direct Tank Pricing & 24h Quote
Factory-direct pricing versus imported brands, with a quick quote in 24 hours and a clear lead time of 15-25 working days.
Factory Direct
No distributor markup - import-brand pricing typically carries 2-3x the factory cost.
Quick Quote in 24h
Itemized tank ladder quote within 24 hours, with calc scope.
15-25 Working Days
Production lead time scheduled to your project deadline.
Get a Tank Cage Ladder Quote
Get a Tank Cage Ladder Quote
Tell us the tank type, height and material preference - our engineers reply within 24 hours with structural calc notes, a drawing review and a quote.
- 24h itemized quote
- Free structural calculation
- DoC, mill certs & calcs included
Tank Diameter Decides the Ladder Build
A cage ladder that fits a 3 m day tank will not serve a 16 m fuel tank — the shell curvature changes everything about anchorage. As diameter grows, the wall flattens, saddle brackets spread the load differently, and the standoff between rails and shell must be recalculated rather than copied from the last project. This is the planning grid our engineers start from when a tank farm sends shell drawings.
Every configuration below ships with the structural calculation sheet that verifies the bracket count and standoff for your exact diameter.
| Tank Diameter | Shell Curvature | Anchorage Approach | Typical Configuration |
|---|---|---|---|
| Up to 3 m | Tight curve | Curved saddle brackets hugging the shell | Single run, cage from 2.2 m, walk-through exit at the manhole platform |
| 3–8 m | Moderate curve | Saddle brackets at calculated spacing | Single run with rest platform near 6 m on taller shells |
| 8–15 m | Gentle curve | Standoff brackets with doubled saddles | Rest platforms at 6 m intervals, self-closing gate at the top landing |
| Over 15 m | Near flat | Standoff set per calculation sheet | Multi-run system with platforms and fall-arrest rail option |
Site Walkthrough
One Tank Ladder, From First Site Visit to Handover
Picture Maria, the maintenance lead at a six-tank fuel depot. Her shutdown window opens in eleven weeks, and the old wall ladder on Tank 403 is corroded past the annual inspection. Here is exactly how the next eleven weeks run when the ladder comes from our floor.
Maria walks the tank with a tape and a phone. We need five numbers: shell height to the manway platform, tank diameter, insulation jacket thickness, the nozzle map around the climb line, and the platform handrail position where the ladder lands. Twenty photos close the gaps words leave.
Our engineers turn those numbers into a GA drawing and a saddle-bracket layout computed for her exact tank diameter, with the structural calculation sheet behind it. She marks it up once, we revise free, and both sign the frozen revision before any steel is cut.
The ladder ships pre-assembled in single pieces up to 14 m, trial-fitted at the factory so bolts align. A two-person crew and one crane lift set the rails onto saddles matched to the shell curve — no tank welding, no hot-work permit — and the cage sections follow the same bolted sequence.
Maria climbs with the checklist: rung spacing 280 mm verified with a gauge, clear width 500 mm, cage Φ700 starting 2.2 m up, MTC 3.1 and DoC against the paperwork, factory photos on file for ten years. She signs, the tank returns to service.
| Survey Checklist (you bring) | Acceptance Checklist (you verify) |
|---|---|
| Tank diameter and shell height to platform | Rung Φ20 at 280 mm spacing, 500 mm clear width |
| Insulation thickness and jacket type | Cage Φ700 from 2.2 m, hoops 40×5 at 1500 mm |
| Nozzle and manway positions on the climb line | Bracket torque per the calculation sheet |
| Existing platform and handrail landing detail | MTC EN 10204 3.1 and DoC in hand |
| Site photos and shutdown window date | HDG 85–100 μm and factory trial-assembly photos |
Decision Guide
Tank Ladder Configuration: Choose This When…
Three forks decide most tank ladder orders — material, top exit, and how the rails grip the shell. Work down the table before you request the quote and your first drawing will already be the right one.
| Decision | Choose X when… | Choose Y when… |
|---|---|---|
| Material | Hot-dip galvanized Q235B — diesel, water and fire-water tanks inland, where $95/m keeps a multi-tank program inside budget | SS304 (1.8x) for wash-down and coastal sites; SS316 (2.5x) when chemical vapor or chlorides attack the climb line |
| Top exit | Walk-through exit at the manway platform — operators step through the guardrail with tools in both hands | Side-step landing with a self-closing gate ($60–180) when the platform edge or nozzle spacing blocks a walk-through |
| Anchorage | Curved saddle brackets clamped to a bare shell — the tank keeps its warranty, no hot work, no penetrations | Standoff brackets over insulation — rails ride on a calculated frame that clears the jacket and drains rainwater |
| Climb length | Single run to 14 m in one fabricated piece — fewer joints, faster install, one trial assembly check | Multi-run with a rest platform ($150–400) near every 6 m where EN ISO 14122-4 or your insurer caps the unbroken climb |
The mistake we see most on tank re-orders
- The mistake: copying the bracket layout from a 5 m day tank onto a 14 m storage tank because "the drawings look similar".
- The consequence: the shell curvature is flatter at 14 m, saddles rock on two contact points, and the load concentrates until the inspection fails the anchorage — rework at height on a live tank farm.
- The correct move: order the saddle set computed for each diameter — our engineers issue the bracket count and standoff from the calculation sheet, free with every quote, before you commit.
What You Get
Every Tank Ladder Feature, Translated Into Your Outcome
Spec sheets list features. This table tells you what each one is worth on your tank farm.
| Feature | Advantage | Your Outcome |
|---|---|---|
| Saddle brackets per tank diameter | load spread computed for your shell | anchorage passes inspection first time, no tank welding |
| Single pieces up to 14 m | fewer bolted joints on the climb | one crane day installs the full run, shutdown stays short |
| Five-stage QC with photo file | MTC 3.1, ISO 5817 C welds, 85–100 μm HDG verified | audit-ready evidence kept 10 years |
| Walk-through or gated exit options | exit engineered to your platform layout | operators top out facing the handrail, not open air |
| 24 h quote, MOQ 1 | one tank or a fifty-tank program priced fast | budget number in hand before the shutdown meeting |