A comprehensive compilation of companies in the process and chemicals industries and their supporting industries.

Bolt Tensioning

Bolt tensioning is a method of controlled tightening using detachable Bolt Tensioners or Hydraulic Nuts to achieve preload. Preload is the load in a bolt immediately after it has been tightened. Through bolt tensioning, inaccuracies created through friction are eliminated and massive mechanical effort to create torque is replaced with simple hydraulic pressure thus the bolts are uniformly and simultaneously… More

Related Categories
Hot Tapping Services  |  Leak Repairs  |  Pipe Lining  |  Piping Contractors  |  Piping Works Contractors  |  Torque Wrenches


7 companies found


• Ultrasonic Boltstress Monitoring Services • On-Site Leak Sealing • EDTorq • Torq-Comm


Features and Benefits • Handles critical service for extended periods of time • Available for hot taps and line stops • Sizes from ½" to 36" (15mm to 900mm) • 150#, 300# and 600# ANSI rated flanges • No welding required • Effective in fluctuating temperatures… More


• Enterprise frame agreement holder to Shell Global solutions worldwide • Tier 1 critical fastener frame agreement supplier to subsea industries • MASTERCOTE PTFE and NanoGalv-coated fasteners salt-spray tested to last 30,000 hours • Extensive range… More



Full range of subsea and topside tensioners Designed & made in-house Long track record of service Revolutionary light and quick torque wrenches and patented ‘Quick Snap’ reaction nuts provide the most user-friendly, reliable and lightweight diver operated… More



Team of NACE-certified engineers specialising in the design and installation of sacrificial anodes and impressed current system DNV Type-approved Shell International Exploration and production inc. deepwater-approved Specialise in the design, supply,… More


We offer sales, rental and leak-free joint engineering services for a wide range of pipeline and in-situ machining jobs. We also design, R&D, and manufacture full range of standard and customised tools and machines to meet our customers' needs and requirements… More

DEASCO was incorporated in 2013 and provides a wide range of specialised services to the Oil & Gas Industry. It is focused at providing our clients with the best possible Integrated Management Pipeline Services. We are a certified company under ISO 9001:2015,… More

Our products are fully designed in the USA/UK and manufactured to strict quality guidelines, hence our ISO 9001, CE & TUV Quality accreditations. Our main products are: • Flange management software • Bolting product sales, service and rental • ECITB… More