Bhastrik Mechanical Labs Private Limited offers Metal made Convoluted Bellows. Bhastrik Mechanical Labs Private Limited is an ISO 9001-2000 accredited company. The Metal made Convoluted Bellows are made up of stainless steel and exotic metals including Hastealloy C-276, Inconel 600, 625 and 718. The Convoluted Bellows are available in sizes ranging from 15 mm diameter to 450 mm. The Convoluted Bellows also come in brass, Cupronickels, copper and phosphor-bronze construction in sheet thickness of 0.15 mm in seam welded or seamless form with sizes from 18 mm I.D. To 75 mm O.D.