SigmaHLR Information

Since 1968, SigmaHLR has engineered and manufactured hydraulic and pneumatic safety control systems trusted by the world’s toughest industries. From offshore platforms to onshore production sites, our ISO 9001:2015-certified products protect people, equipment, and production in mission-critical environments. We specialize in hydraulic logic controls, shutdown systems, and fail-safe pneumatic assemblies that meet the highest performance standards. Our products are used across oil & gas, pipeline, energy, and heavy industrial sectors—where reliability isn’t optional. Every SigmaHLR solution is engineered, assembled, and tested in the USA with a focus on precision, durability, and safety. We combine technical expertise, fast delivery, and field-proven performance to support operations around the globe. Whether you need custom panel design, redundant control solutions, or standard safety instrumentation—we help you control the critical. We are a Sturrock & Robson Group Services USA company.