Fixed Inspection & Service Ladders · OSHA 1910.23 / EN ISO 14122-4
Inspection Ladder — Fixed Service & Maintenance Access
A fixed steel ladder built for routine inspection and service climbs — welded in our Shijiazhuang plant from Q235B or SS304, then load-tested batch by batch.
Gallery
Fabrication
Finishing
Rung detail
Tank access
Product Overview
What Is an Inspection/Service Fixed Ladder?
Picture a crew that climbs the same silo every week. A fixed inspection ladder gives them safe, repeatable access to the top. No scaffolding, no rented lift — just a welded steel climb that stays put for the life of the plant.
In our factory we treat a service ladder as a fall-safety part, not a bracket. Each rung is welded to the stiles, then checked against a 250–300 mm pitch. A sample from every batch goes to a tensile test before it ships. That habit comes from two decades of building fixed ladders for tank farms and process plants.
Because we ship straight from the plant, there is no middleman markup. Every order leaves with material certificates, weld reports, and load-test data. SGS, TÜV, or Bureau Veritas inspection is available on request, and we welcome factory audits.
Service climb detail — anti-slip rungs and walk-thru rails
Technical Specifications
Specifications & Materials for Industrial Fixed Ladders
Welded rung-to-stile joint
Jig-welded, then galvanized
Installation & maintenance access at a glance
Typical geometry for an inspection or service climb. Final dimensions follow the governing code — OSHA 1910.23 in North America, EN ISO 14122-4 in Europe — and are confirmed on the shop drawing.
| Parameter | Value |
|---|---|
| Ladder type | Fixed vertical, inspection/service |
| Stringer material | Q235B / SS304 / SS316 |
| Rung spacing | 250–300 mm |
| Rung diameter | 18–20 mm (serrated / anti-slip) |
| Stile (side rail) | 60 × 10 mm flat bar |
| Rest platform | every ≤ 6 m on tall climbs |
| Wall clearance | ≥ 150 mm to rung |
| Rung point load | 1.5 kN (EN ISO 14122-4) |
| Coating | HDG ~85 µm / SS mill finish |
| Fall protection | cage or rail by height |
| Standards | OSHA 1910.23, EN ISO 14122-4 |
Standards & Compliance
OSHA 1910.23 & EN ISO 14122-4: Safe Fixed Ladder Access
Service ladder on a process tank
Representative tank-access project
OSHA 1910.23 fixed ladder access
For US sites we build the climb to OSHA 1910.23. Above the height threshold we add a cage or a personal fall-arrest system, with walk-thru handrails at the top landing.
EN ISO 14122-4 compliance
For European projects the ladder follows EN ISO 14122-4. Rung pitch, clearances, and rest-platform spacing are set to the clause and noted on the drawing.
Q235B, SS304 or SS316
Standard service ladders are Q235B carbon steel, hot-dip galvanized to roughly 85 µm. For coastal or chemical sites we switch to SS304 or SS316. The grade prints on the mill certificate.
Batch tensile testing
Every inspection ladder ships with documented load data. We pull a sample from each batch for a tensile test, and third-party witness testing by SGS or TÜV is available on request.
Proven on export tank farms
For a recent tank-farm order we supplied fixed service ladders in SS304, each with a mid-climb rest platform. Every unit passed load testing before sea freight.
Factory-direct, fully documented
Orders ship straight from our ISO 9001:2015 plant with material certificates, weld reports, and load-test data. No middleman markup; factory audits welcome.
Applications
Tank Access Ladder & Typical Inspection/Service Uses
Fixed Ladder Family
Related Fixed Ladder Systems & Guides
Fixed Ladder (Guide)
Pillar guide — fixed ladder types, standards, and sizing.
Vertical Fixed Access Ladder
Straight vertical climb for tall single-flight access.
Walkway Fixed Ladder
Ladder paired with a walkway or rest platform.
Fixed Ladder Safety System
Cage and fall-arrest options sized by climb height.
Fixed Ladder Inspection Checklist
What to check on every routine ladder inspection.
Fixed Ladder Maintenance Guide
Keeping service ladders compliant and rust-free.
FAQ
Frequently Asked Questions
Need an inspection ladder quote?
Send us the climb height and the governing standard. Our engineers return a stamped drawing and factory-direct pricing, usually within one working day.