Thread rods/ J/U/Lbolt

Foundation bolt:


  • Foundation bolt
  • Foundation bolt
  • Foundation bolt

Anchor bolts are also known as foundation bolts, foundation anchor bolts, screws. Anchor bolts are produced with many types, bolts are usually manufactured with shapes L, J, I, U in the form of hook anchor bolts, eye bolts... All anchor bolts are designed with a single threaded end, which is shaped like a steel bar with a threaded end, to which the bolt is fitted with nuts and washers.

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Customed production

FOB Price: US $0.5 - 9,999 / Piece

Supply Ability: 10000 ton per Month

Surface treatment: Plain, Zinc Plated(ZP), GALVANIZED, HDG, Hot dip galvanized, Dacromet

Material: Carbon Steel / Alloy Steel / Stainless Steel / Brass / Copper

Standard: DIN / GB / UNC / BSW /JIS etc.

Certificate: ISO9001 ISO14001 ISO45001 SGS

Grade: 4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80 etc.

What are they used for


        T316(a4)Stainless Foundation bolt                                  Zinc Foundation bolt                                        Black Foundation bolt

These foundation bolts are used to hold together significantly heavy support structures. They mostly find their application in electrical and cell phone towers. Depending on the required tensile strength, these bolts can be manufactured in various grades of stainless steel.

Foundation bolt

Manufacturing Process

The various activities involved in manufacturing J/L/I Bolts are:

Incoming raw material inspection using Brine cum Rockwell hardness tester.

Cutting to size of alloy steel bars.

Chamfering of ends.

Centreless grinding of pre roll diameter. This operation ensures accuracy of threads formed subsequently.

Thread rolling on Hydraulic thread rolling machine. Rolled threads are stronger than machined threads and hence essential for this component.

Cold bending on special -Purpose hydraulic cold bending machine

Zinc plating using Acid Zinc Plating process.

Foundation bolt

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