Udhhyog provides double puddle flanges and double flanged pipes with puddle to deliver extra sealing strength. These are particularly effective in large-scale tanks, underground reservoirs, and firewater systems where additional protection is necessary. Manufactured in GI, CI, SS, DI, and rubber materials, our double puddle flanges ensure long service life. With multiple size options ... https://udhhyog.com/puddle-flange-124