Cast Steel D-Ring (Model #ICF-196)

Cast Steel D-Ring (Model #ICF-196)

The Model #ICF-196 is a heavy duty structural cast steel D-ring assembly engineered to provide an unyielding, high-tensile anchor point for severe deck-lashing and heavy cargo securement. Fabricated from premium marine-grade structural cast steel, this rugged tie-down ring features an integrated weld-on base strap that allows for full-penetration welding directly into steel deck plates, coaming lips, or bulkheads. Its clean pivoting design allows the D-ring loop to lie completely flat when not under load, keeping high-traffic commercial work decks and cargo walkways safe from dangerous tripping hazards.

Design & Function

This structural cast steel D-ring serves as a high-capacity anchor point for heavy equipment tie-downs, vehicle lashings, and temporary project-cargo securement on commercial workboat flats and transport barges. Positioned strategically across weather decks, it bears the direct vertical and lateral tension forces generated when locking down heavy rolling stock or timber stacks. The rugged cast steel metallurgy ensures that intense chain friction will not score or compromise the core, maintaining total cargo security under severe vessel pitching, rolling, and high sea states.

Intended Use Cases:

  • Heavy-duty cargo lashing and tie-down centers on flat-deck transport barges.
  • Securement anchors for construction machinery, modular equipment, and supply containers.
  • Localized rigging points for auxiliary lines, snatch blocks, and temporary working gear.
  • Deck refits on existing utility hulls requiring commercial-grade structural lashing rings.

Primary Industries & Vessel Types:

  • Aggregate, timber, and project-cargo deck barges.
  • Inland river pushers, commercial harbor tugs, and offshore supply vessels (OSVs).
  • Roll-on/roll-off (Ro-Ro) vehicle transport vessels and military auxiliary hulls.
  • Marine construction equipment platforms, dredges, and spud barges.

Key Features

  • Premium Cast Steel Construction: Offers superior structural yield strength and high ductility under sudden line shock loads, eliminating the fracturing risks associated with lower-grade cast irons.
  • Weld-On Heavy Base Strap: Engineered with a robust, weld-ready mounting saddle designed to transfer massive multidirectional shear and tensile loads evenly into the vessel's primary framing.
  • Tripping-Hazard Flush Pivot: High-strength loop hinges smoothly, allowing the hardware to lie flat against the deck when released to keep transit paths clear for personnel and vehicular loaders.

Installation

  • Deck Prep & Layout Alignment: Position the #ICF-196 D-ring assembly on the deck plate exactly above the underlying transverse or longitudinal deck girder framing as designated by the naval architect, grinding the deck white metal clean.
  • Under-Deck Reinforcement Check: Verify that the deck thickness beneath the mounting saddle satisfies the required structural rules, adding insert doubler plates or carling angles to the under-deck framing if necessary to prevent deck flexing under tension.
  • Welding Execution & Pre-Heat: Pre-heat the cast steel base strap and matching steel deck plate to recommended shipyard temperatures matching the specific steel grade metallurgy, then execute a continuous multi-pass structural fillet weld around the entire strap perimeter using low-hydrogen electrodes (AWS D1.1 standard).
  • NDT Weld Quality Inspection: Allow the completed assembly to cool slowly and naturally under an insulating blanket to prevent cold cracking, then complete visual and magnetic particle NDT checking to ensure zero weld cracks or inclusion defects.
  • Corrosion Protection Sealing: Wire-brush away all residual weld slag, clean the area, and immediately coat the raw weld lines with high-solids cold-galvanizing compound or premium marine primer to seal out rust.