Product Overview

The DNV 2.7-1 Standard 4 Leg Steel Wire Rope Sling is a multi-leg lifting assembly designed for offshore container lifting, cargo handling, and heavy-duty industrial rigging applications.

The four-leg configuration provides multiple lifting points for connecting offshore containers, baskets, frames, and other certified lifting units to cranes. Each leg is assembled from steel wire rope and compatible end fittings, with the overall sling configuration designed according to the required lifting capacity and application conditions.

For offshore projects, lifting equipment must be selected according to the requirements of the relevant equipment standard, lifting plan, Working Load Limit (WLL), environmental conditions, and certification requirements. DNV 2.7-1 is commonly associated with offshore containers and portable offshore units, while the lifting sling itself should also comply with the applicable sling and lifting-equipment requirements.

Factory production supports customized rope diameter, sling length, end fittings, master link configuration, WLL, identification tags, testing, and documentation for offshore lifting projects.

Product Features

1. Four Leg Lifting Configuration

The 4 leg wire rope sling provides four connection points for balanced lifting of suitable offshore containers and lifting units.

Configuration advantages:

1.Four-point lifting arrangement

2.Suitable for container lifting frames

3.Flexible crane connection

4.Available in different WLL configurations

5.Suitable for engineered offshore lifting applications

The actual capacity depends on sling geometry, leg angle, component ratings, and the lifting arrangement.

2. Steel Wire Rope Construction

The lifting legs are manufactured using high-strength steel wire rope selected according to the required working load and application.

Key characteristics:

1.High tensile strength

2.Good fatigue resistance

3.Flexible construction

4.Suitable for heavy-duty lifting

5.Designed for repeated industrial handling

Wire rope construction and diameter can be customized according to the required WLL.

3. Offshore Container Lifting Application

The sling is designed for use with suitable offshore containers, baskets, frames, and cargo units equipped with compatible certified lifting points.

Typical applications include:

1.Offshore container lifting

2.Offshore cargo handling

3.Oil & gas projects

4.Marine engineering

5.Port lifting operations

6.Offshore platform logistics

4. Heavy Duty Master Link & End Fittings

The 4 leg assembly can be equipped with suitable master links, shackles, thimbles, hooks, and other lifting components according to the project specification.

Available configurations can include:

1.Master link

2.Master link assembly

3.Thimble

4.Connecting shackle

5.Sling hook

6.Customized end fittings

All components should be properly rated and compatible with the complete lifting assembly.

5. Testing & Certification Documentation

For offshore lifting projects, documentation and traceability are important procurement requirements.

Depending on the project, available documentation can include:

1.Material certificates

2.Wire rope certificates

3.Proof load test reports

4.Product inspection reports

5.Identification tags

6.Certificate of conformity

7.Third-party inspection documentation

Certification requirements should be confirmed before production.

Technical Specifications

4 Leg Wire Rope Sling Configuration

A typical offshore container lifting sling assembly consists of:

Crane Hook → Master Link → Four Wire Rope Legs → End Fittings → Container Lifting Points

The four legs should be connected to designated lifting points on the offshore container or lifting unit.

The sling angle has a direct effect on the load carried by each leg. Therefore, the WLL should not be selected based only on the total weight of the container. The leg angle, sling length, lifting point configuration, and rated capacity of each component must be considered.

Product Advantages

Applications

Offshore Container Lifting

Used for lifting suitable offshore containers and portable offshore units during offshore logistics operations.

Oil & Gas Industry

Suitable for offshore oil and gas platforms, drilling operations, and supply logistics.

Marine Engineering

Applied in shipyards, ports, marine construction, and offshore engineering projects.

Offshore Cargo Handling

Used for lifting cargo baskets, equipment frames, material containers, and other approved lifting units.

Heavy Industrial Rigging

Suitable for engineered lifting operations involving heavy machinery and industrial equipment.

Manufacturing & Quality Control

The DNV 2.7-1 offshore lifting sling is manufactured through controlled production and inspection procedures.

Raw Material Inspection

Steel wire rope and forged components are inspected according to the required specifications.

Wire Rope Assembly

Each leg is assembled according to the specified rope diameter, length, termination, and fitting configuration.

Dimensional Inspection

Sling length, fitting dimensions, master links, and connection components are checked.

Assembly Inspection

The complete four-leg assembly is inspected to confirm correct configuration and component compatibility.

Load Testing

Proof load testing can be conducted according to the applicable project specification and certification requirements.

Final Documentation

Identification tags, inspection records, certificates, and test reports can be supplied according to the customer's offshore project requirements.

How to Select a 4 Leg Offshore Wire Rope Sling

Before purchasing, offshore lifting engineers and procurement teams should confirm:

1.Container gross weight

2.Required WLL

3.Number of lifting points

4.Sling leg length

5.Wire rope diameter

6.Sling angle

7.Master link dimensions

8.Shackle and hook specifications

9.Offshore environmental conditions

10.Required certification

11.Third-party inspection requirements

For offshore lifting, the sling should be treated as part of a complete lifting system rather than as an isolated component.

FAQ

Q1: What is a DNV 2.7-1 4 leg wire rope sling used for?

It is used for engineered lifting of suitable offshore containers, cargo baskets, frames, and portable offshore units using cranes.

Q2: Does DNV 2.7-1 certify the wire rope sling itself?

DNV 2.7-1 primarily addresses offshore containers and portable offshore units. The lifting sling should also meet the applicable requirements for wire rope slings and lifting accessories. Project-specific certification should be confirmed before ordering.

Q3: Can the rope diameter and sling length be customized?

Yes. Wire rope diameter, leg length, master link dimensions, end fittings, WLL, and identification requirements can be customized according to the lifting design.

Q4: Can proof load testing be provided?

Yes. Proof load testing and inspection documentation can be arranged according to applicable standards and customer project requirements.

Q5: What information is needed for a quotation?

Please provide the required WLL, container weight, sling leg length, rope diameter if specified, lifting point dimensions, master link requirements, certification requirements, and quantity.