Stainless Steel 316 Electropolishing D Type Widened Safety Shackle Chain Accessories

Product Overview

The Stainless Steel 316 Electropolishing D Type Widened Safety Shackle by RICHWITS is a high-performance chain accessory engineered for demanding marine, industrial, and rigging applications. As a core rigging hardware product, it features electropolished surface treatment, a widened D-type body design, and a secure safety pin mechanism—delivering far superior performance than standard stamped shackles. Suitable for yacht rigging, boat anchoring, lifting operations, and industrial chain assemblies, this 316 stainless steel safety shackle offers exceptional corrosion resistance, enhanced load distribution, and premium aesthetic appeal, with customizable options to meet diverse operational needs.

Key Features & Benefits

Electropolishing Surface Treatment

Manufactured via advanced electropolishing technology, ensuring an ultra-smooth, mirror-like surface finish that eliminates microscopic surface imperfections.

Superior to mechanically polished shackles in corrosion resistance and cleanability—the electropolished layer removes embedded contaminants and creates a passive chromium oxide film for maximum rust protection.

Widened D-Type Body Design

The widened D shackle features an expanded bearing surface that distributes load forces more evenly across connected components, reducing stress concentration on chains, ropes, and straps.

Scientifically engineered proportions provide a larger contact area than standard D shackles, ideal for wide webbing, multiple chain links, and heavy-duty lifting slings.

Marine-Grade 316 Stainless Steel Construction

Constructed with 316 stainless steel (marine-grade), containing 2-3% molybdenum for enhanced resistance to saltwater, chlorides, and aggressive chemical environments.

Suitable for permanent marine immersion, coastal installations, food processing, pharmaceutical applications, and any environment where 304 stainless steel would be insufficient.

Technical Specifications

Usage Scenarios

Marine & Yacht Rigging

Perfect for yacht chain shackles, sailboat standing rigging, anchor rode connections, and mooring line attachments. The 316 stainless steel construction resists permanent saltwater immersion, while the electropolished surface minimizes marine growth adhesion and simplifies maintenance.

Offshore & Coastal Engineering

Ideal for offshore platform shackles, coastal defense structures, marina installations, and underwater equipment. The widened body accommodates heavy-duty chains and synthetic ropes used in marine construction and salvage operations.

Lifting & Material Handling

Suitable for industrial lifting shackles, crane rigging assemblies, overhead hoist connections, and material handling systems. The safety pin mechanism prevents accidental release during dynamic lifting operations, complying with industrial safety standards.

Food Processing & Pharmaceutical Equipment

The electropolished 316 shackle meets hygienic requirements for food-grade and pharmaceutical applications. The ultra-smooth surface prevents bacterial adhesion and allows thorough cleaning, making it ideal for processing equipment, cleanroom installations, and sanitary conveyance systems.

Why Choose Us

Leading Marine & Rigging Hardware Manufacturer

Wudi Zhibo Metal Products Co., Ltd. specializes in stainless steel marine hardware and rigging accessories, with years of export experience to the US, UK, France, Germany, Japan, and Australia. Our strategic location near Qingdao/Tianjin ports ensures efficient global logistics.

Advanced Electropolishing Capability

Our in-house electropolishing facility delivers consistent, high-quality surface finishes that exceed mechanical polishing in corrosion resistance and aesthetic appeal. This proprietary process creates a true passive layer for maximum protection in aggressive environments.

Superior Material Integrity

We source certified AISI 316 stainless steel with full mill test reports (MTR) and material traceability. Every batch undergoes spectrographic analysis to verify chemical composition, ensuring genuine marine-grade material—not inferior 304 substitutes.

FAQ

What is electropolishing, and why is it superior to mechanical polishing?

Electropolishing is an electrochemical process that removes a controlled layer of surface material, dissolving microscopic peaks and creating an ultra-smooth, mirror-like finish. Unlike mechanical polishing, which can embed abrasive particles and create stressed surfaces, electropolishing:

• Removes surface contaminants and inclusions

• Creates a true passive chromium oxide layer

• Improves corrosion resistance by 30-50% compared to mechanical polishing

• Reduces surface roughness (Ra) to <0.4 μm

• Eliminates microscopic crevices where bacteria or corrosion can initiate

Why choose a widened D shackle over a standard D shackle?

The widened D shackle features an expanded bearing surface that:

• Distributes load across a larger area, reducing stress on connected components

• Accommodates wider straps, webbing, and multiple chain links without pinching

• Prevents edge loading that can damage synthetic slings

• Provides better stability under angular loads compared to narrow-body designs

Exhibition