JSA JIS B 2239

Abstract

This Standard specifies cast iron pipe flanges of the nominal pressures 5K, 10K, 10K (thin type), 16K and 20K and of the nominal diameters lOA to 1500A (hereafter referred to as "flanges"), which are used for jointing steel pipes for fluid such as water 1&gt;, oil, vapour, air, gas, etc. and also used for cast iron pipes, pipe joints, valves and the like. <br>NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows. <br><strong>ISO 7005-2:</strong> 1988 <em>Metallic flanges-Part 2</em>: Cast iron flanges (NEQ) <br>In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and <strong>JIS</strong> are IDT (identical), MOD (modified), and NEQ (not equivalent) according to <strong>ISO/ lEC Guide 21-1.</strong> <br>Note ¹⁾ It refers to general service water, water for fire-fighting, water for industrial use, cold and hot water for air-conditioning, cooling water, etc. except drinking water.