Ringlock – Standard Post

(Vertical Standard with Rosette Joints) - EN10219

Product Overview

The Standard Post (vertical member) is the main load-carrying element of the Ringlok modular system. Rosettes, which are welded at 500 mm centers, are provided on each standard; thus, they can be connected by ledgers, transoms, and braces in up to eight directions from these connection points. The prominent features of this construction are maximum flexibility, fast assembly, and high solidity, enabling compliance with the strict structural and safety requirements set by the Aramco and SABIC projects.

Made of high-strength S355 carbon steel and hot-dip galvanized, the Standard Post is capable of providing excellent load capacity, corrosion resistance, and repeat-use durability in heavy-duty industrial applications.

Key Features & Advantages

  • High Compression Strength: Each leg supports up to 60 kN SWL.
  • Eight-Point Rosette Connection: Allows multi-directional assembly at 50°/90° intervals.
  • Precision Spacing: Rosettes welded every 500 mm ± 1 mm tolerance.
  • Corrosion Protection: Hot-dip galvanized ≥ 85 µm per ISO 1461.
  • Dimensional Consistency: Automated welding ensures axial alignment and straightness.
  • Full Compatibility: Connects with Ledgers, Transoms, Braces, and U-Jacks.
  • Approved for Aramco and SABIC sites.

Technical Specifications

  • Material: S355 / EN 10025
  • Tube Outer Diameter: 48.3 mm
  • Wall Thickness: 3.2 mm (standard) / 4.0 mm (heavy duty)
  • Rosette Spacing: 500 mm (8-hole pattern – Ø 133 mm plate)
  • Finish: Hot-Dip Galvanized ≥ 85 µm (ISO 1461)
  • Welding: COâ‚‚ / MIG per ISO 3834-2
  • Ends: Spigot top with a drain hole / open bottom

Dimensional Data

Item Code Description Length (mm) Wall Thickness (mm) Weight (kg) Rosette Centers (mm)
SP-RS-0500 Standard 0.5 m 500 3.2 2.2 1
SP-RS-1000 Standard 1.0 m 1000 3.2 4.1 2
SP-RS-1500 Standard 1.5 m 1500 3.2 5.9 3
SP-RS-2000 Standard 2.0 m 2000 3.2 7.7 4
SP-RS-2500 Standard 2.5 m 2500 3.2 9.3 5
SP-RS-3000 Standard 3.0 m 3000 3.2 10.8 6

Load Capacity & Structural Performance

Parameter Unit Result Reference Standard
Safe Working Load (SWL) kN 60 BS EN 12811 Annex D
Ultimate Load kN 90 BS EN 12811
Deflection at SWL mm ≤ 2.5 BS EN 12811
Rosette Weld Shear Strength kN ≥ 40 Internal Test SPAR-QA-RS/2024
Safety Factor – 1.5 Aramco GI 8.001
Straightness Tolerance mm/m ≤ 1.0 BS EN 12810-2

All Standards are compression tested under third-party supervision (TÃœV / Intertek / SGS) for Aramco and SABIC projects.

Compliance Standards

Standard / Client Clause Description
Aramco GI 8.001 5.3 / 6.1 Vertical load path design and scaffold column requirements
SABIC § 9.4 7.2 Scaffold component inspection frequency
BS EN 12810-1 Clause 4 Performance criteria for prefabricated scaffold systems
BS EN 12811-1 Annex D Testing methods for vertical members
ISO 1461 Clause 6 Hot-dip galvanizing coating test
ISO 3834-2 Clause 8 Welding process quality assurance

Quality Assurance (QA / QC)

Inspection Stages:

  • Raw material verification (MTC – EN 10219).
  • Dimensional and straightness inspection.
  • Rosette position check (± 1 mm).
  • Weld visual + MT test (10% sample).
  • Galvanizing coating test (≥ 85 µm).
  • Compression proof test ≥ 60 kN per sample.
  • Final marking & QA release per ALTRAD SPARQA SOP 12.3.

QA/QC Verification Summary

Inspection Stage Method Acceptance Criteria Frequency
Material Verification MTC Review S355 / EN 10219 Each Batch
Rosette Position Vernier / Jig ± 1 mm 100 %
Weld Integrity Visual + MT No defects 10 %
Galvanizing Coating Gauge ≥ 85 µm Each Lot
Load Test Hydraulic Frame ≥ 60 kN Quarterly
Marking Visual Batch + Heat No. 100 %

Identification & Traceability

Embossed on each Standard are:

ALTRAD SPAR| STANDARD | LENGTH | BATCH No. | HEAT No. | YEAR and they have a QA stamp with the certified load rating.
Optional QR code labels provide access to the digital inspection records within ALTRAD SPARERP.

Applications

  • Petrochemical plant and refinery access towers
  • Industrial shutdown scaffolds
  • Bridge and infrastructure formwork
  • Offshore platforms and shipyards
  • Tank maintenance and pipe rack scaffolds

Maintenance & Inspection

Item Frequency Method
Visual Inspection Before use Check straightness, rosettes, and welds
Coating Verification Every 3 years Galvanizing ≥ 85 µm
Proof Load Retest Every 5 years ≥ 60 kN
Cleaning & Storage After use Dry, stack vertically