Known for heavy-lift work since 1986, Slingmax Rigging Solutions supplies lifting equipment to industrial customers through a network of 45 manufacturing and repair locations. Its Twin-Path slings are supported by ISO-audited procedures and serve demanding applications where equipment must be tested, traceable, and repairable.
DNV certification for K-Spec Core Yarn
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OSHA requirements
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ASME requirements
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WSTDA requirements
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Cordage Institute requirements
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ANSI/ASME B30.9 Chapter 6
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NAVFAC P-307 Section 14.7.4.3
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Cordage Institute CI-1905
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WSTDA-RS-1HP
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I & I Sling, IncFamily-run since its 1963 founding, I&I Sling grew from Dennis St. Germain splicing rope in his Folcroft, Pennsylvania, garage into an American rigging manufacturer serving the crane and heavy-lift industry. The company is known for pioneering the Twin-Path high-performance roundsling and now supports customers through six full-service plants, with more than 100 employees and an ISO 9001-certified quality system.ASTON, PA
Bishop Lifting Products, IncFounded in 1984, Bishop Lifting Products has grown into a national rigging company known for solving difficult lifting challenges through experienced people and local branch support. Its teams serve industrial customers with custom slings, engineering help, and practical assistance from more than 40 locations across the United States and Canada. Bishop’s fabrication operations are certified to ISO 9001:2015.ALBANY, NY
Nassau Industrial Supply, IncFounded in 1975 by Angelo Carpentier, Nassau Industrial Supply manufactures lifting slings and supplies rigging equipment for construction and industrial work. Now formed by the merger of Nassau Sling Co. and A&A Industrial Supplies, the family-run business carries that original focus into a broader operation serving heavy-lifting needs. Its technicians also inspect and repair slings, hoists, and tools, including as an authorized Grundomat horizontal boring tool repair center.ELMONT, NY
Mazzella CompaniesSince James Mazzella started the company in Cleveland in 1954 by hand-braiding wire-rope slings, Mazzella Companies has grown into an independently owned organization with more than 1,000 employees at over 40 locations across North America. Its no-excuses, customer-first culture supports industrial customers with lifting equipment and related service, while its roots in practical rigging work still shape the company today.PITTSBURGH, PA