The Double Chain Clamp is a heavy-duty vessel clamp designed for alignment and reforming of pipes and vessels up to 20′ (6M) with Schedule 80 wall thickness. Aligns Schedule 80 pipe and over when no reforming is required. The extra heavy-duty jackbar and main block provide the brute strength to accomplish difficult reforming jobs. Models 10″ to 36″ thru 10″ to 54″ come with level and support device and all other models come with cable hoist. The Double Chain Clamp is available in steel and stainless steel models and is shipped in a wooden storage crate.