Used for corrosion control.

A sacrificial anode is a metallic anode used in cathodic protection where it is intended to be dissolved to protect other metallic components. In laymen's terms, it is a piece of more readily-corrodible metal, attached by a conductive solid to a less readily-corrodible metal, with both metals immersed in a conductive liquid – typically fresh or salt water. The more active metal corrodes first and generally must oxidize nearly completely (hence the term "sacrificial") before the less active metal will corrode, thus acting as a barrier against corrosion for the protected metal.

General Smelting is a leading producer of zinc sacrificial anodes. It has over five decades of experience in the manufacturing of Zinc anodes at the Montreal facility. This facility has modern analytical equipment operated by highly qualified technical personnel to help assure the quality and reliability of its anodes.

There are two main zinc anode groupings, Hi-Amp and Hi-Pure zinc anodes:

Hi-Amp Zinc anodes are produced from Special High Grade Zinc. They conform in composition to ASTM-B-418-73 Type I and the latest revision of MIL-A-18001 H.

Hi-Amp anodes are designed for applications where the metallic structure to be placed under cathodic protection is exposed to sea or brackish water buried in saline mud, and where the anode temperature will be approximately 120°F or lower.

• Hulls of ships, barges, tugs and boats photo
• Ballast tanks of tankers, ore carriers, and freighters.
• Bulkheads
• Piers and pilings
• Submarine pipelines
• Heat exchangers
• Travelling screens

General Smelting offers a wide variety of Hi-Amp zinc anode shapes and sizes (complete with cores for bolt-on or weld-on mounting). Please contact us for more details.

Hi-Pure Zinc anodes are produced from Special High Grade Zinc. They conform in composition to ASTM-B-418-73 Type II.

Hi-Pure zinc anodes photo are designed for applications where the metallic structure to be placed under cathodic protection is to be buried underground (soil anode), in fresh water, or subject to temperatures of approximately 120°F or higher.

• Transmission pipelines
• Gas and oil distribution systems
• Transmission line tower footings and guy anchors
• Domestic oil tanks