Nexterity builds robots to automate bolt-tightening for pipefitters
Original: Nexterity wants to automate the hard, dangerous part of pipefitting
Why This Matters
Automating dangerous manual labor in energy infrastructure could reshape safety and productivity norms across a massive, underserved market.
Startup Nexterity has developed a battery-powered, remote-controlled robot that attaches to pipes and tightens or loosens four bolts at a time. Targeting the oil, gas, and petrochemical sectors, the company plans to rent the device like construction equipment. Founder Lindsey Elliott, a former ExxonMobil engineer, says 80% of North American pipes fall within the two-to-eight-inch diameter range — making the segment ripe for automation.
Nexterity founder Lindsey Elliott spent years working as an engineer and planner at ExxonMobil before zeroing in on a deceptively simple problem: the bolts connecting pipe sections — known as bolted flange joints — require exhausting manual labor and are a leading cause of pipefitter injuries. With labor shortages already straining the industry, she told TechCrunch that workers are regularly asked to work 12-hour shifts for months at a stretch, and that 'North American pipefitting productivity is notoriously low.' Her answer is a two-piece, battery-powered robot that clamps onto a pipe, slides along it, and simultaneously tightens or loosens four bolts at a time. The device is compact enough to fit in a Pelican case and be hauled by one worker, keeping deployment simple across job sites. Nexterity offers multiple configurations to cover standard pipe diameters from NPS2 to NPS8 — the range covering roughly 80% of pipes in use, according to Elliott's research with ASME's Pressure Vessels and Piping Division. The business model mirrors rental construction equipment, avoiding the need for customers to purchase hardware outright. Nexterity is part of the Startup Battlefield 200 cohort at TechCrunch Disrupt 2026.