Foundation Bolts for Wind Mills

Foundation bolts for wind mills are used in pre-engineered wind turbine foundations and construction. These Foundation Bolts are available in different variety & of types including Full threaded & partial threaded.

We manufacture M16 to M72 & 1/2” to 3” Foundation bolt as per customer requirements for wind turbines.

Advantages of Using our Foundation/Anchor Bolts

•   Extensive quality control and manufacturing program produces the highest quality bolts in the market.
•   Three manufacturing plants throughout India near New Delhi allow for the most efficient distribution network and timely deliveries.
•   Foundation bolts have been cold temperature tested to assure full load retention and reliability in harsh environments.
•   Laboratory test results for all Foundation bolts show less than 2% load relaxation loss under tension.
•   Leading Foundation Bolts manufacturer in the industry with over 15years’ experience.
•   Custom Foundation diameters and grades available upon customer request.
•   Shipments are custom packaged per customer’s requirements.
•   Foundation Bolts bundles include bar code tags for positive steel mill& Bigbolt nut traceability.
•   Foundation bolts can be chamfered to assist tower installation.
•   Foundation bolts can be color coded or include Q/C tag on bolt end for jobsite identification after installation.
•   Special A193 B7 150 KSI High Impact Steel available upon request.


These washer are manufactured by us in Mild steel, carbon steel and stainless steel. Popular grades include MS, 8.8, 10.9, 12.9, SS316, SS304, SS316L, B7, B8, L7, L7M, etc. The Dimensions per customer requirements.


We can offer surface finishing as per customer requirement in hot dip galvanising, we take special care to ensure there is no hydrogen embrittlement in 10.9 grade with our special curing system which ensures that 10.9 grade bolts are not damaged by hydrogen embrittlement post galvanising process. We also do zinc electroplated in blue, yellow or black colour as per customer requirements.

Special coatings in specific industries require zinc flake coatings, these coatings are done as per ISO 10683, depending upon customers requirement for salt spray life we offer coating systems from NOF Japan and Doerken from Germany, these coatings are provided with the help and support of our partners who have the required licence and have successfully done validations with our existing customers. Salt spray life can vary from 500 to 1500 hours.

Black oxide or black coating is a general type of coating offered on bolts & nuts & stud bolts to give a pleasant appearance and to prevent any rusting during transportation or storage, the normal salt spray life for the fasteners applied with such coatings is often less than 100 hours

Xylan is a brand name of With fort USA and is a special coating applied on fasteners / stud bolts where extreme temperatures and harsh condition exist. The Highlights of this coating is that it gives

  • Low friction CoF as low as 0.02.
  • High corrosion and chemical resistance in most environments including marine and Oil & Gas
  • "Wide temperature operating range: from -420° to +550°F (-250° to 285°C)"
  • "Wide color range: color-code your product"
  • Machinability: apply multiple coats of Xylan coating (most formulations) and mill to specification
  • Wear resistance is very high, even under extreme pressures.
  • Weather resistance: against sunlight, salt water and road chemicals
  • Flexible curing schedule: ambient to 750°F (400°C).
  • Pliability: Many Xylan coatings will bend freely and repeatedly without breaking.
  • "Salt spray SST life: above 1000 hrs."

These foundation bolts are used at the base of the wind mills and are generally made as per 8.8 or 10.9 grade steel. These foundation bolts are very critical and we do the heat treatment for these foundation bolts in closed atmospheric furnaces to achieve the desired results.


These stud bolts are first cut as per customer requirement and then the ends are chamfered to specs at 45 degrees, We then do heat treatment on them in our factory using an advanced SQF sealed quench heat treatment furnace from DOWA Japan, the heat treatment furnace is SCADA controlled and provides 100% repeatability batch after batch. The heat treatment result is a perfect marten site after hardening and gives perfect results after tempering as per standard requirement. After heat treatment we complete the thread rolling and then coating as per customer requirement and then final assembly.

Foundation Bolts for Wind Mills