CEJN's range of ISO B steel couplings and nipples are compliant with the ISO Standard 7241-1 B. Their robust design offers a long, trouble free service life even in the roughest environments. The Series are made of plated steel and all high stress parts, such as the locking sleeve and nipple, are made of hardened steel for extra protection. They are available in five sizes ranging from DN 6.3 to DN 25. The Series' sturdy design in combination with good performance make them suitable for applications such as the iron, steel, oil, food and automotive industry.