Hot Dip Galvanizing

General Features

  • The steel surface of products such as rock bolts and plate washers is chemically cleaned prior to galvanizing.
  • The galvanizing process produces a durable and abrasion-resistant coating of metallic zinc.
  • The zinc coatings are strongly resistant to the corrosive action of normal environments and will provide considerable improvement in long-term protection of rock bolts and components.

With DSI's mix of products, the following standards apply:

  • ROCK BOLT BODY HOT DIPPED GALVANIZED to AS/NZS 4680:1999.
  • ROCK BOLT THREADS HOT DIPPED GALVANIZED to AS/NZS 4680:1999 then centrifugally spun or precision mechanically cleaned.
  • ROCK BOLT NUTS HOT DIP GALVANIZED to AS/NZS 4680:1999, centrifugally spun then tapped oversize to AS 1214 - 1983.
  • DOMED BALL HOT DIP GALVANIZED to AS/NZS 4680:1999 then centrifugally spun.
  • DOMED & FLAT PLATE WASHERS HOT DIP GALVANIZED to AS/NZS 4680:1999.

The above specification also covers the galvanized coating applied to general steel articles, structural sections, angles, channels, beams, columns, fabricated steel assemblies, threaded bolts and other steel components.

 

Notes

  • For additional or specific technical specifications, reference should be made to:

Galvanizers Association of Australia,
124 Exhibition Street, Melbourne 3000.
Phone: (03) 9654 1266 Fax: (03) 9654 1136  

  • Minimum galvanized coating thickness is 84 microns on 5mm and thicker steel sections.
  • Increased thickness will occur with heavier sections or on certain steel compositions.
  • DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.