Production standards are summarized as below;

Water and gas pipes: EN 10217-1 TR1, EN 10255, DIN 2440, BS 1187, ISO 65, N FA49-145, ASTM A53, ASTM A500,
DIN 2999-2986, BS 1387, ASTM A53, SI 1458

Industrial Pipes: DIN 1387, DIN 2458-1615 & 1626, BS 6363, BS 6323, BS 1139, EN 39, EN 10219-2