We provide an extensive range of round fittings. Our standard fitting construction is lapped and bonded and sealed air tight. Elbows of 10-inch diameter and above are constructed using BHV “Beta Seam” standing seam. Continuously welded fittings and elbows are also available in all diameters and materials with the exception of poly vinyl coated and pre-painted steel and aluminum. For additional construction information, or for specific requirements, please contact us. Special fittings are available.