OUR STORY
Quality American Manufacturing
I&I Sling, Inc. is a manufacturing company servicing the crane and heavy lift industry with six manufacturing plants strategically located to service the entire East Coast.
We fabricate custom slings, supply rigging hardware and hoists, and provide testing, engineering, and repair services at all six full-service locations. We also provide products from the most trusted rigging equipment suppliers in the US, including Slingmax® Rigging Solutions and the Crosby Group. I&I Sling employs over 100 workers dedicated to Quality, Innovation, Service, and Training.
Quality
Our products meet or exceed nuclear safety standards. Therefore, they can pass anywhere.
- American-made lifting products
- Equipment inspection, testing, and repair, with proof-testing capability to 1.2-million lbs.
- Crane and rigging assessments to improve safety and efficiency
Innovation
We lead the industry in R&D including our newest product - The Helix™ High Performance Synthetic Roundsling.
- Develop patents and trademarks supporting the Slingmax Rigging Solutions product line
- Continuous testing and technical analysis supporting the Rigging Industry
- We serve on associations which write and revise industry standards
Service
With 24/7 Overhead Lifting support, we understand your job isn’t on a fixed schedule. We’re here to help, whenever that may be.
- Equipment inspection, repair and recertification programs
- Ten calibrated test machines up to 600 ton capacity
- Full time engineers and NCCCO certified rigging experts on staff
Training
Exceptional, hands-on training courses wherever you need us - your location or ours.
- Rigging and Signalperson training utilizing the latest applications and techniques
- Taught by NCCCO-certified riggers, crane and equipment operators, and safety professionals
- Toolbox talks and lunch-and-learns
Forward Thinking.
Founded in 1963, I&I Sling has been a trusted leader in the rigging industry for more than six decades. Family run for over half a century, the company built its reputation by pioneering innovative rigging technologies and delivering dependable, safety driven solutions that advanced the industry and expanded our reach nationwide.
In 2023, I&I Sling and Slingmax Rigging Solutions joined forces with Yale Cordage, uniting three long standing innovators with a shared commitment to engineering excellence. This collaboration formally came together under the Slingmax Group in 2025, strengthening our collective ability to design, manufacture, and support the most advanced lifting, rigging, and cordage solutions available today.
This union allows I&I Sling to broaden the range of solutions we provide and support a wider scope of applications, while maintaining our longstanding commitment to quality, safety, and service.
Six Decades of Service
I&I Sling, Inc. has been servicing the crane and heavy lift industry for nearly 60 years. I&I Sling was founded by Dennis St. Germain, who started the business by splicing rope out of his garage in Folcroft, PA. Years later Dennis invented the first high-performance roundsling in the United States, known as the Twin-Path® Sling.
We continue our mission of focusing on customer service and innovation - whether we’re manufacturing trusted rigging products, designing custom lifting solutions, or bringing toolbox training sessions to a jobsite, we are proud to go above and beyond to help our clients succeed.