Drop Forged Putlog Coupler (Single Coupler) – The Ultimate Engineering Guide
Key Features
Enhanced Stability: The four-way fork design prevents lateral movement of beams, ensuring maximum safety on site.
Superior Durability: Manufactured from high-strength Q235 steel, built to withstand heavy-duty construction environments.
Corrosion Resistance: Available in multiple finishes, including Zinc-Plated and Hot-Dip Galvanized, to prevent rusting and extend service life.
Universal Compatibility: Designed to fit standard steel prop inner tubes and accommodate various beam widths.
Technical Specifications & Material Standards
At AJ SCAFFOLD, we adhere to the most rigorous international manufacturing protocols to ensure site safety and component longevity.
|
Feature |
Specification |
|
Product Name |
Drop Forged Putlog Coupler / Single Coupler |
|
Material |
High-Grade Carbon Steel (Q235/S235JR) |
|
Manufacturing Process |
Heavy-Duty Drop Forging |
|
Standard Compliance |
BS1139 / EN74-1 Class A |
|
Compatibility |
Standard 48.3mm Scaffolding Tubes |
|
Surface Treatment |
Hot Dip Galvanized / Electro-Galvanized (Zinc Plated) |
|
Nut/Bolt Size |
21mm AF Nut / T-Bolt (High Tensile) |
|
Weight |
Approx. 0.6kg - 0.7kg (Standard Dependent) |
Why Choose AJ SCAFFOLD Drop Forged Technology?
While many manufacturers offer "pressed steel" putlog couplers, AJ SCAFFOLD specializes in the Drop Forged variety. Here’s why the forging process is superior for industrial applications:
Grain Flow Alignment: The forging process aligns the internal grain structure of the steel with the shape of the coupler, resulting in significantly higher impact resistance and durability compared to cast or pressed alternatives.
Dimensional Precision: Our molds are CNC-machined, ensuring that every coupler provides a perfect, snug fit on a 48.3mm tube, preventing "slippage" or "wobble" on the ledger.
Superior Corrosion Resistance: All AJ SCAFFOLD components undergo a multi-stage cleaning process before being Hot Dip Galvanized. This ensures a coating thickness of 40μm+, providing decades of protection against oxidation in harsh maritime or industrial environments.
Structural Anatomy and Design
The design of the AJ SCAFFOLD Putlog Coupler features a unique "J" shaped hook and a heavy-duty flap.
The Hook Section: Specifically thinned to minimize the gap between the transom and the ledger. This ensures the scaffold boards remain level across the entire platform.
The T-Bolt & Nut: We use Grade 8.8 high-tensile bolts. The nuts are treated with anti-seize properties to ensure smooth operation even after multiple uses on dusty construction sites.
Anti-Slip Grooves: The internal surface of the coupler features micro-grooves that increase friction against the galvanized tube, ensuring the horizontal member remains fixed under vibration.
Installation Guidelines & Safety Protocols
To maintain the structural integrity of your scaffolding, follow these professional installation steps:
Positioning: Place the Putlog Coupler over the ledger (the horizontal tube running along the length of the scaffold).
Engagement: Hook the "J" section over the ledger and slide the putlog (the cross-tubes) into the cradle of the coupler.
Tightening: Use a standard scaffolding spanner to tighten the 21mm nut. The recommended torque setting is 50Nm. Over-tightening can stress the bolt, while under-tightening compromises grip.
Inspection: Ensure that the putlog is sitting flat. There should be no vertical movement when downward pressure is applied.
Important Safety Note: Putlog couplers are NOT for use as load-bearing couplers (e.g., they cannot replace Double Couplers for bracing or ledgers). They are exclusively for securing transoms that support scaffold boards.
Applications in Global Infrastructure
The AJ SCAFFOLD Drop Forged Putlog Coupler is a staple in various sectors:
Commercial Construction: Rapid assembly of facade scaffolding for brickwork and rendering.
Oil & Gas Refineries: Used in tube and clamp systems where flexibility in platform height is required around complex piping.
Shipbuilding: Providing level working platforms within narrow hull compartments.
Maintenance & Renovation: Ideal for indoor birdcage scaffolding where flush surfaces are required for safety.
Quality Control: The AJ SCAFFOLD Promise
Every batch of our couplers undergoes a rigorous testing phase in our in-house laboratory:
Distortion Test: We apply force to ensure the coupler returns to its original shape without cracking.
Salt Spray Testing: To verify the longevity of the galvanization.
Thread Tolerance: Every bolt is checked to ensure it meets ISO thread standards, preventing cross-threading in the field.
Ordering & Logistics Information
As a leading manufacturer and exporter, AJ SCAFFOLD provides streamlined logistics for international wholesalers.
Packaging: Standard 25 units per woven bag, or 1000 units per steel crate/pallet. Custom labeling and branding (OEM) are available for bulk orders.
Shipping: We offer full 20GP or 40HQ container loading analysis to maximize your shipping costs.
Lead Time: Standard stock items are available for immediate dispatch; custom forged runs typically require 15-25 days.
Contact AJ SCAFFOLD today for a competitive B2B quote and technical consultation.
Precision Engineering. Uncompromising Safety. Professional Scaffolding Solutions.
Company Name: AJ SCAFFOLD
Website: www.ajscaffold.com
Email: leo@ajscaffold.com
WhatsApp/Tel: +8617375382926
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We are committed to providing you with the best quality service and look forward to communicating with you to solve problems together and bring you a better experience.