ASME B29.21M:1996 pdf free download

ASME B29.21M:1996 pdf free download 700 CLASS WELDED STEEL ACAST CHAINS, ATTACHMENTS AND SPROCKETS FOR WATER AND SEWAGE TREATMENT PLANTS
1.3 Dimensions for Chain Links To assure interchangeability of links as produced by different makers of chain, standard maximum and mini- mum dimensions are adopted. They are not actual dimen- sions used in manufacturing, but limiting dimensionsmaximum or minimum- required to assure the desired interchangeability. All dimensions are given in a decimal-inch system in accordance with ANSI B87.1-1965. The metric equiva- lent dimensions are for reference only, per ANSI Z210.1-1976.
2 DEFINITIONS
2.1 Minimum Ultimate Strength (M.U.S.) The minimum ultimate strength (M.U.S.) is a factored statistical value for standards, which does not necessarily reflect the typical ultimate strength of the chain. Manufac- turer should be consulted for additional information. CAUTION THIS LOAD IS BEYOND THE YIELD STRENGTH OF THE CHAIN AND WOULD RENDER THE CHAIN UNSUIT- ABLE FOR APPLICATION. FOR APPLI- CATION GUIDANCE, CONSULT MANU- FACTURERS’ CATALOGS OR THE AMERICAN CHAIN ASSOCIATION HANDBOOK, “ENGINEERING STEEL CHAINS FOR CONVEYORS, ELEVA- TORS AND DRIVES.”
2.2 Proof Load for Cast Chains Nondestructive testing of each chain strand at the proof load, a load which is greater than the load expected to be applied to the chain in service, gives the user assurance that the chain meets the requirements of this Standard. All cast chains must be subjected to this test.
2.3 Working Load Capacities of Chains For working load capacities of each chain, consult the individual chain manufacturer.
2.4 Strand Length Tolerance
2.4.1 Welded Steel Chains. New chains under a measuring load may be over rriinirnurii length up to 0.38 in. in 120 in. (9.7 mm in 3048 mm), but must not be less than minimum length.
2.4.2 Cast Chains. New chains under a measuring load may be over minimum length up to 0.75 in. in 120 in. (19.05 mm in 3048 mm), but must not be less than minimum length. 2.5 Weights Chain weights are listed in manufacturer’s catalogs.