Sigmaflex is leading manufacturer of Flexible Metallic bellows & Hoses since 1991. It manufacturers & exports metallic bellows expansion joints. One of our Managing Director Mr. Rajendra is Post Graduate in mechanical engineering from USA . He has worked in USA from 1974 -1990. He has broad experience in Engineering, Designing & Assisting in construction of refineries & chemical plants all over the world. He is technically expert in the field of Piping Flexibility. For more information, please visit http://*****