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ASME B29.21-2013
- 700 Class Welded Steel and Cast Chains, Attachments, and Sprockets for Water and Sewage Treatment Plants
- standard by ASME International, 01/15/2014
- Publisher: ASME
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Since the development of this Standard in 1975 and the subsequent revisions published in 1981and 1996, it has been noted that within the marketplace the use of chains made from plastics orstainless steels has become more prevalent. In most cases these chains are derivations of thetraditional "700 Class" cast iron or welded steel chains that were the basis of the original Standard.These new products offer system designers alternatives in terms of strength, wear life, corrosionresistance, system weight, ease of maintenance, and cost.
This revision incorporates the following product groups not found in previous editions of theStandard:
This revision incorporates the following product groups not found in previous editions of theStandard:
- Stainless steel fabricated chains (SS715 and SS709)
- Nonmetallic (plastic) chains (NM720)