Tension Control Bolts Ltd operates a quality management system in accordance with BS EN ISO 9001:2015, maintaining full traceability of our products from their initial source of supply through to despatch to the customer.

BSI assurance mark iso 9001 2015Quality is at the forefront of everything we do, and we are proud of the outstanding reputation we have created over the last 30 years whilst becoming the market leader in tension control bolting.

Through continuous improvement we will meet or exceed our customers’ needs and expectations in product, service and support. The company constantly monitors its quality performance and implements improvements where appropriate.

Quality Certificates

Please visit our Downloads section for all quality documentation.

Quality Control

quality testingTo ensure our products conform to all relevant standards and specifications, TCB operate specialist testing equipment including:

  • Neutral Salt Spray corrosion cabinet
  • Tensile testing
  • Proof load testing
  • Preloading & Suitability testing
  • Charpy Impact testing
  • Tri-Roll Thread Comparators
  • Calibrated gauges and tools

Approved suppliers to:

  • ABB
  • Alfred McAlpine
  • Alstom Power
  • Alstom Transport
  • AMCO
  • Amec
  • Amey
  • Arqiva
  • Babcock International Group
  • Balfour Beatty
  • BAM Nuttall
  • Bechtel
  • LendLease
  • Culham Engineering
  • Hsin Chong Construction
  • Dragages
  • Multiplex
  • Cimolai
  • Costain
  • Spencer Group
  • EDF Energy
  • Galliford Try
  • Gammon Construction
  • Lagerwey
  • Interserve
  • Kier Group
  • Laing O'Rourke
  • Mace
  • Fletcher Construction
  • Wates
  • Hip Hing Construction
  • Chun Fai Construction
  • Morgan Sindall
  • Murphy Group
  • Dawnus Construction
  • Novarka
  • Samsung C&T
  • Siemens Gamesa
  • Sisk Group
  • Canary Wharf Contractors
  • Skanska
  • Stobart Rail
  • Tekfen
  • Vinci PLC
  • VolkerWessels UK
  • Ferrovial
  • Meinhardt

 

Specified by consulting engineers including:

  • Aecom
  • Arcadis
  • Arup
  • Atkins
  • Black & Veatch
  • Buro Happold
  • Capita Property and Infrastructure
  • Cass Hayward
  • COWI
  • Halcrow
  • Jacobs
  • Mott Macdonald
  • O'Connor Sutton Cronin
  • Pell Frischmann
  • Ramboll
  • Roughan & O'Donovan
  • Royal Haskoning DHV
  • SKM
  • Tony Gee & Partners
  • URS Global
  • W A Fairhurst
  • Waterman Group
  • WSP Global
  • WYG

 

Approvals

architectural service department bam bba bcsa bureau veritas cticm
dibt highways england nda nhss risqs sellafield
sncf socotec tata thescotish government tuhh welsh assembly

Greenkote® anti-corrosion protection

Tension Control Bolts Ltd has its own metal coating plant producing an environmentally friendly process called Greenkote® which is comparable to galvanising, although it is harder wearing and readily accepts all paint systems. Learn More.

Greenkote