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Types Of Cat Ladders — Factory-Direct Guide

Types Of Cat Ladders

Compare caged, walkway and tank cat ladders in HDG steel, SS304 or aluminium. Factory-direct from Dengtai since 2004 — OSHA, BS 4211 & EN ISO 14122 compliant, with compliance docs and an itemized quote within 24 hours.

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OSHA 1910.28 EN ISO 14122-4 BS 4211 MTC & DoC Included
Types of cat ladders - factory-made caged and vertical cat ladder detail
20+

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50+

Countries Exported

24h

Quote Response

20+

Years Manufacturing

What Is A Cat Ladder?

Types Of Cat Ladders — Caged, Walkway, Tank & Vertical

A cat ladder is a fixed vertical ladder permanently mounted to a roof, tank, chimney or plant wall to give maintenance crews safe, code-compliant access. It is not a pet product — it is engineered structural access, fabricated from Q235B hot-dip galvanized steel, SS304/SS316, aluminium or GRP, with every rung rated to 1.5 kN and spaced 225–230 mm. An access route that fails inspection means stop-work orders and retrofit scaffolding at site rates.

The right type depends on climb height, mounting surface and how often crews climb. Caged cat ladders protect climbers on high, frequent-access routes. Walkway and platform types add a safe step-off onto a roof edge or tank top. Tank cat ladders wrap curved hoops around cylindrical vessels. Vertical cat ladders are the economical choice for low-frequency maintenance.

  • Engineered to your standard

    OSHA 1910.28/1910.23, EN ISO 14122-4, BS 4211 or AS 1657

  • Grade-matched materials

    Q235B HDG 85–100 µm · SS304/SS316 · aluminium · GRP/FRP

  • Same factory, matched fit

    Stiles, hoops, brackets and platforms cut and welded in-house

Assembled types of cat ladders ready for dispatch

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Different Types Of Cat Ladders Explained

Four main types of cat ladders cover almost every roof and plant access job. Each is made-to-measure and delivered with a full compliance file.

Caged type of cat ladder with safety hoops

Caged Cat Ladders

Cages starting 2.2–2.8 m follow EN ISO 14122-4 / BS 4211 guarding practice; for US new builds OSHA 1910.28 requires a ladder safety system or PFAS above 24 ft. Hoops on ≤1.5 m centres over rungs at 225–230 mm. The default type for high, regular roof access.

Walkway and platform type of cat ladder with landing

Walkway & Platform

A cat ladder with platform adds a landing transition, so crews step off onto the roof edge, parapet or tank top without a climb-through. Built to your parapet height and step-off width.

Tank type of cat ladder on a vertical storage tank

Tank Cat Ladders

Radiused hoops and standoff brackets follow the shell of vertical tanks and water towers. SS304 or aluminium for potable-water and chemical duty, with curved cage profiles.

Vertical and custom type of cat ladder being lifted into place

Vertical & Custom

The economical workhorse for plant rooms, substations and occasional access. Custom stile lengths, extensions and intermediate rest platforms — max 25 m per section.

Maker-Direct Specifications & Cost

Types Of Cat Ladders — Specifications & Cost

Every type shares the same engineered parameters below — so you can compare caged, walkway, tank and vertical cat ladders line by line before you buy. Factory-direct, itemized ex-works quotes in 24 hours — material, machining, finishing and packaging line by line, typically well below US catalog equivalents. See our price guide for what drives cat ladder cost per metre.

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SpecificationValue
Rung Load1.5 kN per rung
Rung Spacing225–230 mm centres
Stile MaterialQ235B HDG (ISO 1461) · SS304/SS316 · Aluminium · GRP/FRP
Fixing Spacing≤1500 mm centres
Max Single Section25 m — taller climbs with rest platforms
Safety CageHoops 2.2–2.8 m, ≤1.5 m apart
GalvanizingHDG 85–100 µm to ISO 1461
Reference PriceHDG factory-direct per m climb · 6 m caged set itemized ex-works
StandardsOSHA 1910.28/1910.23 · EN ISO 14122-4 · BS 4211 · AS 1657

B2B Manufacturer Since 2004

Types Of Cat Ladders Supplier — Dengtai

Dengtai has manufactured fixed access ladders since 2004 from our factory in Jingxing Mining District, Shijiazhuang. We supply every type of cat ladder — caged, walkway, tank and vertical — direct to contractors, plant owners and distributors in 50+ export countries. You quote against our production floor, not a reseller's margin, and every order ships with DoC, MTC 3.1 and an engineer-signed structural calculation sheet.

  • 20+ years of manufacturing

    Roof access, tank farms, plants and warehouses worldwide

  • Factory engineers answer

    Type selection, structural review and drawing check included free

  • Export-ready logistics

    EXW, FOB or CIF — crated or loose for container loading

Factory line-up of different types of cat ladders for export
Tank cat ladder project on industrial water tanks

Water Utility Retrofit — Gulf

40+ SS304 tank cat ladders with radiused hoops and standoff brackets. DoC and MTC 3.1 per set, shipped CIF, phased to match tank outages.

Walkway and platform cat ladder installed at a factory

Logistics Park — Australia

Caged and walkway cat ladders to AS 1657 across 12 warehouse roofs. Engineer-signed structural calcs accepted at first submission.

Compliance Docs: DoC, MTC & Structural Calcs With Every Order

Compliance Docs with Every Order

OSHA, BS 4211 & EN ISO 14122 compliant — with order-level DoC and full documents. No chasing paperwork after delivery; you receive the same file your contractor submits for sign-off.

  • DoC — Declaration of Conformity

    To OSHA 1910.28/1910.23, EN ISO 14122-4, BS 4211 or AS 1657

  • MTC 3.1 Material Certificate

    EN 10204 3.1 for Q235B / SS304 / SS316

  • Structural Calculation Sheet

    Engineer-signed, covering rung load and fixing spacing

Compliance components for different types of cat ladders

Factory-Direct Pricing

Factory-Direct Types Of Cat Ladders

Factory-direct pricing, 15–25 day production, quote within 24 hours. Buy caged, walkway, tank or vertical cat ladders straight from the production floor.

Factory-Direct

No distributor markup. Quote direct from the production floor with EXW, FOB or CIF options.

Itemized In 24 Hours

Material, fabrication, galvanizing, packaging and freight — line by line, within 24 hours of your request.

15–25 Day Production

Cut, welded, trial-assembled and shipped in 15–25 working days, with a free drawing review before production.

Request A Quote — Types Of Cat Ladders

Get My Factory Quote On Types Of Cat Ladders

Tell us your climb height, mounting surface and required standard — we recommend the right type of cat ladder and send an itemized factory-direct quote in 24 hours, free.

  • 24h itemized quote
  • Free drawing & type review
  • DoC, MTC & structural calcs included
+ More specifications (height, quantity, cage, standard)

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More Answers

Types Of Cat Ladders FAQ

What are the different types of cat ladders?
There are four main types of cat ladders: caged cat ladders with safety hoops for high and frequent access, walkway and platform cat ladders that transition the climber onto a roof edge or tank top, tank cat ladders with radiused hoops that follow cylindrical vessels, and vertical cat ladders for low-frequency maintenance. We manufacture all four in Q235B hot-dip galvanized steel, SS304/SS316 or aluminium, with every rung rated to 1.5 kN and spaced 225–230 mm.
Which type of cat ladder do I need?
Choose by climb height and frequency. Above about 3 m of free climb EN ISO 14122-4 / BS 4211 typically require fall protection; in the US, OSHA 1910.28 applies above 24 ft (7.3 m). Add a walkway and platform when crews step off onto a roof edge or tank top, use tank cat ladders with curved hoops for cylindrical vessels, and pick a vertical cat ladder for occasional maintenance. Send your height and mounting detail and we recommend the right type within 24 hours.
What materials are types of cat ladders made from?
Q235B hot-dip galvanized steel (HDG 85–100 µm to ISO 1461) is standard for outdoor and industrial types. SS304 and SS316 with grade verification are used for chemical, marine and food facilities, while aluminium and GRP/FRP cover lightweight or corrosion-critical projects.
Do different types of cat ladders come with compliance documents?
Yes — every type, whether caged, walkway, tank or vertical, ships with a Declaration of Conformity, an MTC 3.1 material certificate and an engineer-signed structural calculation sheet at no extra cost. We build to OSHA 1910.28/1910.23, EN ISO 14122-4, BS 4211 or AS 1657 depending on your region.
What is the difference between a caged and a walkway cat ladder?
A caged cat ladder wraps the climb in hoops at centres of no more than 1.5 m over rungs at 225–230 mm — the default for high, regular roof access. A walkway and platform type adds a landing transition, so crews step off onto the roof edge, parapet or tank top without a climb-through.
Which type of cat ladder suits a cylindrical tank?
The tank type. Radiused hoops and standoff brackets follow the shell of vertical tanks and water towers, with the climb rolled to your vessel diameter. For potable-water and chemical duty we build in SS304 or aluminium, with curved cage profiles that keep the guard continuous around the shell.
How tall can each type of cat ladder go?
Every type runs to 25 m per section — our factory maximum for a single run — with intermediate rest platforms above that where the climb demands it. Custom stile lengths, extensions and platform positions are engineered to order, and the drawing review is free within the 24-hour quote.
How long do made-to-measure ladder types take to deliver?
You receive an itemized quote within 24 hours of sending your climb height and mounting details. Production runs 15–25 working days from the approved drawing, then the ladders ship EXW, FOB or CIF — packed to your load plan whether that is one cage ladder or a full container mix.
Can I trial-order a single ladder before a bigger program?
Yes — trial orders start from 1 unit, so you can prove a type on one access point before rolling it out across the site. For larger programs, container mixes of caged, walkway, tank and vertical types are quoted per load plan inside the same 24-hour quote.

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