Engineered for extreme tensile loads, architectural security, and commercial marine operations. Complete standard compliance.
An enterprise specializing in premium-grade rigging products, strategically located in the coastal manufacturing hub of Qingdao, China.
Located in the beautiful coastal city of Qingdao, Qingdao Rui De Tai Metal Products Co. Ltd is easily accessible, adjacent to Qingdao International Airport and the container port. With senior management, professional technicians, advanced domestic production facilities, and rich experience in production management, our company maintains a strong technical force, scientific testing methods, and a reliable quality assurance system. We specialize in various rigging configurations, including shackles, turnbuckles, load binders, hooks, eye bolts and nuts, wire rope clips, thimbles, anchors, snap hooks, anchor chains, clamps, and stainless steel rigging. Meanwhile, we could take up processing business according to the drawings, samples, and materials supplied by customers.
Technical developments, manufacturing advancements, and safety parameters driving heavy lifting systems globally.
Historically, securing wire ropes relied on field-fabricated splices or standard cast clips, which carried variable safety coefficients. Today, the engineering requirements of modern infrastructure demand highly predictable mechanics. Modern wire rope cable clips (commonly known as bulldog clips, wire rope grips, or U-bolt clamps) are precision-forged components. The manufacturing shifts from cast iron to forged carbon steel, and subsequently to Grade 316 marine stainless steel, have revolutionized load capacities.
In high-load environments, drop-forged steel clips have become the default engineering standard. The drop-forging process aligns the grain structure of the steel with the geometry of the clip, resulting in superior shear strength and resistance to fatigue. Furthermore, hot-dip galvanization (HDG) technology has advanced, providing zinc-iron alloy layers that resist mechanical abrasion during torque application.
For multinational procurement officers and EPC (Engineering, Procurement, and Construction) companies, sourcing rigging gear is no longer just about unit cost. It is about compliance and risk mitigation. Safety-critical systems require adherence to standards such as:
Procurement departments require mill test certificates (MTCs), raw material chemical composition reports, and non-destructive testing (NDT) verification to prevent catastrophic field failures.
The manufacturing capabilities of China have transitioned from labor-intensive factories to precision-automated smart facilities. At Qingdao Rui De Tai, Factory 4.0 initiatives mean integrate-forging lines, digital temperature-controlled heat treatment systems, and automated tensile testing rigs. This modernization delivers two key advantages:
Critical mechanical indicators for installing drop-forged wire rope clips to ensure up to 80% efficiency ratings.
| Rope Size (Inches / mm) | Minimum No. of Clips Required | Amount of Rope to Turn Back (Inches) | Torque Requirement (Ft-Lbs) | Standard Compliance |
|---|---|---|---|---|
| 1/4" (6.5mm) | 2 | 4-3/4 | 30 | FF-C-450 Type I Class 1 |
| 3/8" (10mm) | 2 | 6-1/2 | 45 | FF-C-450 Type I Class 1 |
| 1/2" (13mm) | 3 | 11-1/2 | 65 | FF-C-450 Type I Class 1 |
| 5/8" (16mm) | 3 | 12 | 95 | EN 13411-5 / US Fed |
| 3/4" (20mm) | 4 | 18 | 130 | EN 13411-5 / US Fed |
*Note: The efficiency rating of a wire rope termination made with wire rope clips is dependent upon the correct application of the clips, the torque value, and the orientation. Never use clips to connect two primary load lines directly without proper eye rigging.
From deep-sea operations to industrial infrastructure projects, our products deliver reliability where it matters most.
Saltwater accelerates galvanic corrosion. Our hot-dip galvanized and grade 316 stainless steel wire rope clips withstand high salinity. They secure mooring lines, deck lashings, and heavy crane hoist lines on commercial vessels and container ports.
Suspension systems, temporary scaffolding supports, and overhead guy wires require high tensile strength. Our drop-forged clips are essential components for industrial construction firms requiring predictable load capacities.
Heavy trawling applications expose rigging hardware to continuous mechanical stress and impact. Our specialty 10mm trawling shackles and bulldog clips are designed to handle demanding fishing nets and deep-sea towing loads.
A comprehensive operations system designed to support international procurement workflows.
Reply to your inquiries or technical questions within 24 working hours to keep your procurement schedules on track.
Experienced technical and account managers answer all inquiries with professional and fluent English communication.
Custom sizing, length, configurations, and branding options are available based on your engineering drawings or physical samples.
Unique hardware integration solutions developed by our engineers to streamline your sourcing and procurement pipelines.
Full after-sales support, remote assembly guidance, and product optimization advice to ensure performance in the field.
Strict inspection protocols conducted by our QA team before shipping, covering chemistry, dimensional tolerances, and mechanical limits.
Browse our core inventory. We provide certified high-durability components for industrial rigging applications.
Our facilities operate under standardized quality management systems. All batches undergo structural and material audits to ensure compliance before leaving our plant.
We collaborate with third-party testing organizations like SGS to verify metallurgical integrity, tensile ratings, and plating thickness. This ensures compliance with global maritime and construction standards.
We ship our products worldwide, serving clients in Africa, Europe, Asia, the Middle East, North America, Oceania, and South America.
Thanks to our proximity to the Qingdao international port, we supply rigging equipment to distributors and project sites across the globe, including Australia, the Philippines, the Marshall Islands, New Caledonia, French Polynesia, North America, Cuba, Nigeria, Egypt, Germany, and Madagascar.
Our logistics team manages export documentation, custom packaging, and freight routing to ensure safe, on-time delivery of your rigging hardware.
Engineering questions and installation practices for wire rope grips, clips, and terminations.
The standard rule for installing U-bolt wire rope clips is: "Never saddle a dead horse." This means the saddle of the clip must rest on the live (load-bearing) end of the wire rope, while the U-bolt must rest on the dead (cut/turned-back) end. Installing them backward reduces the termination efficiency to 50% or less, which can lead to premature failure under load.
Drop-forged wire rope clips are heated and shaped by forging presses, which aligns the steel's grain structure for superior strength and fatigue resistance. These clips are designed for load-bearing, critical rigging, and safety-critical overhead suspension. Malleable cast iron clips, on the other hand, are brittle and should only be used for non-critical, light-duty applications like fencing, handrails, or light structures.
When tension is applied to a wire rope, its diameter decreases slightly as the steel strands compress and stretch. This reduction in diameter loosens the grip of the clips. To maintain the rated efficiency of the termination, you must apply tension to the rope and then immediately re-torque all nuts to their specified torque ratings.
No. Standard safety regulations, including OSHA and ASME B30.9, prohibit the use of wire rope clips for making overhead lifting slings. Overhead hoisting slings require mechanical mechanical splices or swaged sleeves, which are permanently pressed in a controlled manufacturing facility.
Hot-dip galvanizing (HDG) creates a thicker, chemically bonded zinc-iron alloy layer that protects the steel from corrosion in outdoor and marine environments. Electro-galvanizing provides a thinner, brighter zinc coating, which is suitable for indoor use but degrades quickly when exposed to weather, moisture, or saltwater.
From forged chain accessories to marine tensioning hardware, we manufacture to your specifications.
Rui De Tai