... section1.ASTM A53,ASTM A500, ASTM A513, 2.ANSI C80.1 ,ANSI C80.3 3.BS1387, BS1139 4.EN10219,EN10220, ... EN10240,EN10255 5.DIN2440,DIN2444,DIN2458 6.AS1163,AS1074,AS2556OuterDiamete: 1/2"to16"Wallthickness: 0.6mm-20mmLength: Max 12metersSdandard: GB, ... under the ISO9001:2000 strictlyO.D.D.N.W.T.1/2"21.3mm0.6mm-3.0mm3/4"26.7mm0. ... 8mm-3.0mm1"33.4mm0.8mm-5.0mm11/4"42.2mm0.8mm-5.0mm11 ...