\r\n\r\nChallenger Services offers pipeline equipment and construction equipment to contractors throughout the world. We focus on both equipment and support items. Equipment includes cranes, pipelayers, earthmoving machines, and specialized equipment. Support items include welding machines, holiday detectors, slings, spreader bars, external clamps and accessories.\r\n\r\nWe have refined several designs of welder tractors and tack rigs into improved models of the Auto-400, Quad #400, Dual-300 and Combo Units on D6, D7, TD-15 and Challenger Tractors. Challenger Services has improved the designs perfected from more than 55 years in welder tractor design and fabrication. In addition to the welder tractors, Challenger Services will also offer heavy-duty designed fill pumps, test pumps, combination pumps and ditch pumps.\r\n\r\n