Forged Anchor & Foundation Bolts
Anchor bolts hold machinery and structures to their foundations, and once concrete is poured they can never be replaced without breaking it out. That permanence is why corrosion protection matters as much as strength.
Forged anchor bolts fix machinery and structures to concrete foundations in L, J, plate and sleeve types, from M12 to M64 in lengths up to 1,000 mm. Because they cannot be re-coated after installation, hot dip galvanising or stainless construction is normally specified.
- Diameter range
- M12 – M64
- Length
- Up to 1,000 mm
- Types
- L, J, plate, sleeve
- Protection
- HDG, zinc, stainless
- Property classes
- 4.6, 8.8, 10.9
Forged Anchor & Foundation Bolts at a glance
Quotable facts from Avadh Techno Forge, Gundasara, Gondal, Rajkot.
- Diameters M12 to M64, lengths to 1,000 mm
- L, J, plate and sleeve types available
- Hot dip galvanised as standard for outdoor use
- Property classes 4.6, 8.8 and 10.9
Types and Embedment
L-type and J-type bolts rely on a hooked end embedded in concrete. Plate-type bolts use a welded or forged plate for higher pull-out capacity. The embedded end develops the holding force; the exposed thread only transfers it.
- L, J and plate types
- Embedded end develops holding force
- Lengths to 1,000 mm
- Sleeve and template options
Corrosion Protection Is Permanent
The exposed thread sits at the concrete interface where moisture collects, and it can never be re-coated once installed. Hot dip galvanising is the usual answer, with stainless where the environment is genuinely aggressive.
People also ask
What is the difference between L and J type anchor bolts?
Both use a hooked embedded end; the L type bends at 90 degrees and the J type curves further back on itself, giving slightly greater pull-out resistance in the same embedment depth.
What property class should anchor bolts be?
4.6 for general structural fixing, 8.8 where higher tensile capacity is needed, and 10.9 for heavily loaded machinery mounts.
Can anchor bolts be replaced after installation?
Not without breaking out the concrete, which is why corrosion protection and correct sizing matter so much at specification stage.
Topics covered on this page
- anchor bolt
- foundation bolt
- L bolt
- J bolt
- hot dip galvanising
- embedment
- property class
Based on work carried out at our own forging plant at Gundasara, Gondal, Rajkot — operating since 2008.
Questions Answered
What length anchor bolts can you make?
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Up to 1,000 mm, in diameters from M12 to M64.
Should anchor bolts be galvanised?
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In almost all cases, yes. The thread sits where moisture collects and can never be re-coated after installation.
Do you supply templates and sleeves?
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Yes, templates for accurate placement and sleeves where adjustment is needed can be supplied with the bolts.