... and others)3. Alloy Steel (C276,Alloy600 and others)Standard Available:We can manufacture and supply flanges as per below ... standards.A. America standard: ANSI B16.5/API605, 6A, 6B/MSS SP44/ ... AWWA C207B. Germany standard: DIN2527/2528/2561/2565/2566/2573/2576/2627/2630/ ... .00mm and unit weight is 4,000.00kgs. Gost 12836 Blind flange