Different countries have different regulations when it comes to lifting and rigging equipment. That’s where universally accepted industry standards and certifications like DNV come in. Classification societies like these make it easier to build and distribute products that adhere to different industry and safety norms.
DNV, which stands for Det Norske Veritas, is a Norway-based classification society. After merging with Germanischer Lloyd (GL) in September 2013, it became the largest classification society in the world.
Now it’s called DNV GL. However, people continue to use the old acronym DNV even today. DNV develops and maintains various standards for offshore, maritime, energy, and oil & gas industries.
At Holloway Houston, we have obtained two of the most important DNV Type Approvals:
DNVGL – 2.7-1 Type Approval Certification
DNVGL – 2.7-3 Type Approval Certification
Holloway Houston assembles all of its offshore wire rope slings per the manufacturing and shipping standards laid down by the DNV quality management approved system. It involves thorough inspection and vetting required to ensure excellent wire rope quality.
As a result, each component of our wire rope slings is as per the specified strength, safety, and endurance requirements. In other words, when you purchase DNV certified wire ropes from Holloway Houston, you get nothing but the best quality lifting and rigging products.
We know that wire rope slings are one of the critical components in offshore lifting and rigging operations. The safety of your cargo and crew depends on these slings. We assemble and distribute wire rope slings that live up to the design, manufacturing, testing, certification, and periodic inspection standards set by the DNV 2.7-1 and DNV 2.7-3 certificates.
In fact, both standards cover critical elements related to the safe lifting and handling of offshore containers and units using these wire rope slings. These standards help determine the safety issues concerning lifting and rigging operations between two floating vessels and between floating vessels and fixed or floating offshore units.
Given the broad scope of DNV certifications, Holloway Houston brings you the opportunity to purchase and use high-quality wire rope slings across continents risk-free. It offers you a critical advantage in an increasingly competitive global market. Moreover, we offer you a vast selection of wire rope slings, allowing you to meet all your lifting and rigging needs under one roof.
However, it is not possible for all products to get DNV TAC certification. When shopping with Holloway Houston be sure to talk to our experts. They will help you understand which products have this certification and help you find the ones that best fit your needs.
Shop Wire Rope SlingsHere are a few of our premium products that you can use in the oil fields, construction, OEM, aerospace, and other industries. Please remember, these slings are not always made with DNV TAC certification.
One of the most popular EIPS wire rope lings offered by Holloway Houston, these are made to last. They are available in the sling body diameter range of 1-1/2” to 12”. The maximum vertical capacity is 660 tons. They have a design factor of 5:1, and we proof-test these for two times the working load limit.
Available in the finished wire rope diameter range of 3” to 24”, these slings are best suited for heavy lifting and rigging applications. We assemble these slings by laying wire rope components continuously through both eyes and the sling body. We can also make these wire rope slings to desired specifications.
Holloway Houston offers three types of bridle slings. They include 2-leg bridle slings, 3-leg bridle slings, and 4-leg bridle slings.
All our bridle slings undergo rigorous proof-testing – twice the working load limit. They have a design factor of 5:1. And all master links are sized to accommodate heavy-duty thimbles. If thimbles are not required, a smaller master link may be appropriate.
We offer a range of eye and eye wire rope slings. Extremely versatile, you can use these for vertical, choker, and basket hitches. These slings require fewer parts to assemble, making our eye and eye slings relatively cost-effective.
They have a design factor of 5:1. And we test every sling for two times the working load limit. However, you have to make appropriate reductions when angular lifting is involved.
Our high-capacity low-headroom grommets are best suited for heavy-duty industrial lifting applications. You can use these grommets where you need extra flexibility, or traditional wire rope slings are too short.
Both phase one grommet (single part) and phase two grommet (two-part) have a design factor of 5:1 and working load limits in tons of 2000 lbs. We proof-test these grommets for twice the working load limits for enhanced safety. In addition to the given specifications, we also offer basket ratings upon request.
These specially fabricated wire rope assemblies are suitable for offshore and marine applications. All of our specifications are based on EIPS. However, EEIPS based specifications are also available upon request. We proof-tested all assemblies to 40% of catalog breaking strength. For details, you can talk to one of our experts.
Holloway Houston is an industrial hardware distributor and supplier well-known for its professional service, transparency, and high-quality products. The DNV 2.7-1 and DNV 2.7-3 certificate offers us the opportunity to take this trust a step further. Now, you can order DNV TAC-certified wire rope slings with ease.
If you need more information or want to place your order, schedule a call with our experts. Fill out our online contact form or call +1 713 674 5631 today.
Shop Online Wire Rope SlingsDNV (Det Norske Veritas) Type Approval Certification confirms that a wire rope sling is manufactured and assembled to meet DNV standards for offshore lifting operations. Holloway Houston holds both DNV 2.7-1 and DNV 2.7-3 Type Approval Certifications, which govern offshore containers and units lifted between vessels or between vessels and fixed offshore structures. Not every sling configuration carries DNV certification.
DNV 2.7-1 covers the design, fabrication, testing, and certification of offshore containers and their associated lifting equipment. DNV 2.7-3 addresses portable offshore units used in lifting operations. Both standards apply to offshore and subsea environments and together form the framework Holloway Houston follows when assembling certified wire rope slings for offshore projects.
Wire rope slings are generally taken out of service when inspection reveals broken wires, kinking, birdcaging, corrosion causing pitting or binding of wires, damaged end attachments, or an illegible identification tag. Published guidance under ASME B30.9 lists specific removal criteria for each condition. For offshore-certified slings, the DNV certification requirements add additional documentation and inspection obligations.
Holloway Houston's wire rope slings, including the EIPS and bridle sling lines, are proof-tested to twice the working load limit during fabrication. The design factor referenced in product documentation is 5:1. These figures apply to the specific product configurations listed in product data; the applicable manufacturer documentation governs each assembly's rated working load limit.
Wire rope sling capacity depends on rope diameter, construction, end termination type, and the hitch configuration used. The published Working Load Limit on the sling tag reflects the rated capacity for the stated hitch and angle. Angular and choker applications reduce capacity below the vertical WLL. Manufacturer charts and the sling identification tag are the governing references for any specific assembly. Browse Holloway Houston wire rope slings.
The content provided is for general informational purposes only and is not a substitute for professional advice. Holloway Houston, Inc. is not responsible for any actions taken based on this information.