SPRING SHOE BENDER
The unique design uses a spring shoe to apply side pressure on the pipe while it is being bent which reduces or eliminates egging and keeps the pipe plumb during the bending process.
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The flexible membrane, combined with a hinging framework allows the spring shoe bender to be used on pipe from two to eight inches in diameter, with no additional parts required to change from one size to another. The materials used in the spring shoe bender allow bending of coated pipe without damage to the coating. Coated pipe that have been successfully bent include rock shield, FBE, Yellow Jacket, Tapes, and hot dope. |
Conventional field bending using a shoe on a pipelayer consists of multiple bends put in a joint of pipe by applying winch pressure, releasing, walking forward, and applying pressure again. The special membrane on the spring shoe bender allows the pipe to slide through the shoe at the same time that the bend is being made, thus allowing the operator to complete the bending process quickly and efficiently. This "walking bend" also effectively moves the pressure point on the pipe during the bend, helping to control crimping, egging and damage to the coating. The finished bend on a single joint of pipe can exceed 45 degrees, depending on the coating and the requirement for the trench. |
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The Spring Shoe Bender with mounting bracket is lightweight, economical and easily attached to a sideboom. For eight inch and smaller pipe, the Spring Shoe Bender offers substantial cost savings over a conventional pipe bending machine with bending sets, and far better bending performance than the standard bending shoe. (A video tape is available on request.) |