Five-Stage Inspection
Quality Control -
Five-Stage Inspection
Incoming MTC to pre-assembly final check. ISO 5817 Level C welding, ISO 1461 HDG, QC records kept 10 years — every stage documented, every report free.
Every Order, Every Time
Five-Stage Inspection Process
A fixed ladder passes through five QC gates before it is packed. Each gate produces a record that ships with the order and stays on file for 10 years.
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1
Incoming Material
Raw Steel Verified Against MTC
100% of incoming steel is checked against the purchase order and the mill Material Test Certificate — chemical composition, mechanical properties, dimensions and surface. Accepted against GB/T 700, ASTM A36 or EN 10025.
Record: MTC traceability sheet -
2
Cutting & Prep
First-Piece Full Dimension Check
CNC plasma or oxy-fuel cutting, sawing, drilling, bending and chamfering. The first piece of every batch is 100% dimension-checked, then sampled — tolerances to ISO 2768-mK.
Record: dimension report -
3
Welding & Assembly
ISO 5817 Level C Visual + PT Sampling
100% visual inspection of welds per ISO 5817:2014 Level C. A random ≥10% of welds get dye penetrant (PT) testing. Welders hold ISO 9606-1 certificates; procedures qualify per ISO 15614-1.
Record: weld inspection report -
4
Surface Treatment
ISO 1461 HDG or Dual-Coat Paint
Hot-dip galvanizing to ISO 1461:2022 — local ≥85 μm, average ≥100 μm — with adhesion and uniformity verified. Painted parts get 80 μm zinc-rich primer + 50 μm polyurethane topcoat, adhesion to ISO 2409.
Record: HDG coating report -
5
Final Inspection
Cage-Rail Pre-Assembly & Packing Check
Cage and rail pre-assembled, full dimension re-check, nameplate verification, then packing inspection — VCI rust protection, vacuum wrap and ISPM 15 fumigated pallets.
Record: pre-assembly & packing photos
Welding Quality
ISO 5817 Level C Welding
Every rung-to-stringer and bracket weld is inspected to ISO 5817:2014 Level C — the quality level for static, predominantly static structures. That is the level EHS engineers expect for fixed ladder assemblies.
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ISO 5817:2014 Level C visual acceptance
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PT on a random ≥10% of welds per batch
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Welders certified to ISO 9606-1
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WPQR qualified per ISO 15614-1
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Weld records archived with each order file
Corrosion Protection
ISO 1461 Hot-Dip Galvanizing
Galvanizing is done at a certified partner plant 30 km from our factory, with a 14 m bath. The coating is measured, not assumed — thickness readings go into every QC record.
| Property | Requirement |
|---|---|
| Standard | ISO 1461:2022 |
| Local coating thickness | ≥ 85 μm |
| Average coating thickness | ≥ 100 μm |
| Adhesion | Verified per ISO 1461 |
| Uniformity | Checked across full length |
| Report | Coating thickness sheet shipped free |
Traceability
QC Records: Kept 10 Years
If an inspector asks "prove it" three years from now, the file is still there. Every order's QC records — MTC, weld, coating and photos — are archived for 10 years.
Documentation Package
Ships with every order — 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)
What "Kept 10 Years" Means
Order-level file
MTC, dimension reports, weld records, coating report and photos bound to the PO.
Reorder traceability
A repeat order can be matched to the original mill certificates for the same material grade.
Audit-ready
Records are inspectable in person or shared on request — that is how factory audits pass.
See Before You Buy
Request QC Reports
Ask for a sample QC report from a representative order, or talk to a quality engineer about your acceptance criteria. Reply within 24 hours.
Report Samples Available
MTC 3.1 sample
Mill certificate for Q235B, SS304 or SS316 — chemical and mechanical data.
Weld inspection record
ISO 5817 Level C visual and PT results from a representative order.
HDG coating report
Thickness readings per ISO 1461 across the ladder length.
Request QC Report Sample
Quality in Context
The standards, the floor and the track record behind our QC system.
OSHA 1910.27
The compliance file every order carries
BS 4211
UK fixed ladder standard, DoC per order
Factory Tour
See the equipment behind the five stages
Steel Fixed Ladders
HDG ISO 1461 caged and walk-thru ladders
Custom Engineered Ladders
Structural calcs with every custom order
Our Projects
23 documented projects in 15 countries
Common questions
Incoming material (MTC verified), cutting & prep (ISO 2768-mK), welding (ISO 5817 Level C), surface (ISO 1461 HDG), and final pre-assembly.
ISO 5817:2014 Level C - 100% visual inspection plus ≥10% dye penetrant testing, by EN ISO 9606-1 certified welders.
10 years - MTC, weld, coating and photo records are archived per order for inspector audit.
No - DoC, MTC 3.1 and structural calcs ship free with every order.
Yes - request a sample QC report and we will send a real report from a shipped order.
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
HDG