D-Rings
Weld-On Forged D Ring Heavy Duty Mounting Ring Lashing Ring
A forged steel D ring designed for permanent welding to flatbeds, trailers, deck plates, or structural steel. It provides a high-strength, reliable lashing point for chains, ropes, or straps in heavy-duty transport, construction, and marine applications. Available from 3/8" to 1" in size with working load limits from 5,000 lbs to 47,000 lbs. The forged construction ensures strength and resistance to deformation under repeated or extreme loads.
- Size
- From 3/8"x5000lbs to 1"x47000lbs
- Material
- Carbon / Alloy Steel Processing: Forged
- Finish
- Self-colored, Painted, Gavanized
- Packing
- Cartons + Pallets
- Catalogue Family
- D-Rings
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Weld on Forged D Ring Gives You
- Permanent installation via welding eliminates loose fittings and reduces risk of failure during transport
- Forged steel construction delivers superior strength and impact resistance compared to machined or cast alternatives
- High load capacity supports heavy cargo and equipment with a 4:1 design factor standard
- Smooth internal radius reduces rope and chain wear at the attachment point
- Versatile use with chains, synthetic webbing, or ratchet straps across multiple industries
- Corrosion-resistant finish options extend service life in harsh environments
- Compact design fits into tight spaces without adding bulk to the mounting surface
Application Scenarios
Where Weld on Forged D Ring Is Used
- Securing heavy machinery on flatbed trailers for long-haul transport with continuous vibration
- Mounting lashing points on offshore platform decks where repeated load cycles and salt exposure occur
- Attaching cargo restraint systems on construction site equipment and steel transport trailers
- Installing permanent anchor points on shipyard dockside structures for mooring and lifting operations
- Building fixed rigging points on industrial gantries and warehouse racking systems
- Integrating lashing rings into agricultural transport vehicles for securing large farming implements
Who It Is For
Buyers This Product Is Built For
- Trailer and truck manufacturers building flatbeds and cargo carriers with integrated lashing systems
- Marine and offshore contractors specifying permanent deck fittings for offshore platforms and vessels
- Construction equipment suppliers integrating secure anchor points into heavy machinery chassis
- Industrial rigging distributors sourcing high-strength, welded lashing points for bulk orders
- Logistics operators upgrading fleet safety with permanent, high-capacity lashing points
Problems It Solves
Problems This Product Removes
- Loose or removable lashing points failing under dynamic load during transport
- Using cast or machined rings that lack strength for repeated heavy-duty use
- Needing multiple separate fittings for chains, straps, and ropes due to lack of multi-use anchor points
- Rope or chain damage from sharp edges or small radii at the attachment point
- Inconsistent load capacity across different lashing hardware sourced from multiple suppliers
- Lack of traceability and certification for critical safety components in high-risk applications
Technical Features
Technical Features
- Drop-forged body in carbon or alloy steel for high tensile strength and fatigue resistance
- Permanent weld-on design with flat mounting face for full penetration welds
- Standard 4:1 design factor with minimum breaking load four times the safe working load
- Smooth internal radius to reduce abrasion on ropes and chains
- Stamped working load limit and material grade on the body for traceability
- Available in sizes from 3/8” to 1” with load capacities from 5,000 lbs to 47,000 lbs
- Finish options include self-colored, painted, or galvanized for corrosion resistance
Specifications
Weld on Forged D Ring Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Size Range | 3/8” to 1” diameter |
|---|---|
| Material | Carbon steel or alloy steel |
| Processing | Drop forged |
| Surface Finish | Self-colored, painted, or galvanized |
| Design Factor | 4:1 minimum breaking load to safe working load |
| 3/8” Dimensions | A 44.0 B 36.0 C 10.0 D 30.0 E 22.0 F 5.0 G 34.0 mm weight 0.175 kg |
| 1/2” Dimensions | A 63.5 B 57.1 C 13.0 D 45.0 E 25.0 F 8.0 G 33.0 mm weight 0.425 kg |
| 5/8” Dimensions | A 75.0 B 75.0 C 16.0 D 63.5 E 31.0 F 9.5 G 37.0 mm weight 0.850 kg |
| 3/4” Dimensions | A 75.0 B 75.0 C 19.0 D 63.5 E 35.0 F 9.5 G 40.0 mm weight 1.225 kg |
| 1” Dimensions | A 75.0 B 75.0 C 25.0 D 63.5 E 41.0 F 9.5 G 63.0 mm weight 1.910 kg |
| 1” Dimensions | A 100.0 B 75.0 C 25.0 D 63.5 E 41.0 F 9.5 G 63.0 mm weight 2.150 kg |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Drop-forged carbon or alloy steel for high tensile strength and fatigue resistance
- Steel grade selected based on application load and environmental exposure
- Galvanized finish for corrosion protection in outdoor or marine environments
- Painted finish for visual identification and moderate protection in industrial settings
- Self-colored steel for base material with no additional coating
Manufacturing Process
How This Product Is Made
1Forging of steel billet into D ring blank
2Heat treatment to enhance strength and ductility
3Machining of mounting face and internal radius
4Surface finishing by galvanizing, painting, or leaving self-colored
5Stamping of working load limit and material grade
6Proof load testing and dimensional inspection
7Packing in cartons on pallets for export
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Visual inspection for surface defects, weld quality, and finish uniformity
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the D ring body
- Private label and OEM marking available
- Finish to order: self-colored, painted, or galvanized
- Custom dimensions and mounting configurations built to a drawing
- Packing configuration adjusted for carton count and pallet pattern
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Machined D ring | Forged construction offers higher strength and fatigue resistance, especially under repeated dynamic loads |
| Cast D ring | Forged steel has better impact strength and is less prone to internal defects or porosity |
| Removable bolt-on D ring | Weld-on design provides a permanent, vibration-resistant anchor point with no risk of loosening |
| Threaded eye bolt | D ring offers a larger, more stable attachment surface and better load distribution |
Use Guide
How To Use And Inspect Weld on Forged D Ring
- Weld the D ring to a flat or properly prepared steel surface using full penetration welds
- Ensure the mounting surface is clean, flat, and free of rust or paint before welding
- Verify the weld meets structural standards and is inspected for defects
- Do not exceed the stamped working load limit under any condition
- Inspect the weld and ring for deformation or cracking after heavy loading
- Retire the D ring if the body shows distortion, the weld fails, or the marking is unreadable
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Answers
Weld on Forged D Ring FAQ
Can this be welded to any steel surface?
Yes, it can be welded to flatbeds, deck plates, structural steel, or hatch covers, provided the surface is prepared and the weld is full penetration
What is the design factor for these D rings?
A standard 4:1 design factor applies, so the minimum breaking load is four times the safe working load
Are Material Test Certificates available?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied on request with each order
Can you provide custom sizes or mounting configurations?
Yes, custom dimensions, mounting patterns, and drawings are accepted for production
What finishes are available?
Options include self-colored, painted, or galvanized finishes for corrosion resistance
How are the D rings packed for export?
Cartons on pallets as standard. We can adjust carton count and pallet pattern to suit your warehouse or shipping requirements
What sizes and capacities are available?
Sizes range from 3/8” to 1” with safe working loads from 5,000 lbs to 47,000 lbs. Full dimensions and weights are listed in the specs
Need A Quote On Weld on Forged D Ring
Send the sizes, the finish and the quantity on WhatsApp or by email. You get a priced reply within 24 hours and a straight answer on stock.
We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.