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Purchasing Policy

Diamond Chain will select suppliers who offer goods and services that are of the highest quality and offer a full range of support at a competitive price.

New business will be awarded only after a complete supplier evaluation. Supplier visits will be by appointment only.

We employ this policy to ensure the best use of suppliers' time and availability of the appropriate purchasing personnel. It is our protocol that Diamond Chain employees do not accept gifts, entertainment or any other form of gratuity.

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ASME / ANSI Roller Chain

Diamond Series

Diamond Chain's extensive ASME / ANSI product assortment provides industry leading wear life and is available in a variety of base materials, finishes, and lubrications.

Attachement Roller Chain

Infinity Series

Available in ANSI 25 through 240 and ISO 05B through 032B. Includes single and multi-strand, heavy series, and solutions for specialized applications.

Oil and Gas Chain

Sapphire Series

Includes ANSI 25 through 160 and ISO 05B through 048B single and multi-strand, and select maintenance-free, and attachment solutions.