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Forgings

The first step in manufacturing, is forging. We have in house manufacturing set up for hot forgng bigger diameter bolts and nuts from diameter and above.

Please see below the details of the forging machinery available in our factory.

Machine Details Capacity Make Year of Make Bolt diameter Number of Machines
Screw press forging

350 T

BIRSON 2010 M-39 to M-64 3
Screw press forging

200 T

BIRSON 2011 M-16 to M-36 2
Screw press forging

500 T

MANKU 2012 M-36 to M-100 1
Screw press forging

200 T

MANKU 2011 M-24 to M-39 1
Screw press forging

50 T

RATAN FORGING 2008 M-12 to M-20 1
Screw press forging

25 T

RATAN FORGING 2005 M-10 to M-16 1

We have over the last 30 years developed our manufacturing with the help of contant improvement in technology by adding new and advanced techniques in manufacturing, we have also developed a CAD design software inhouse which enables us to design our toolings in our own factory and with the use of advanced dies and die steel material and with the help of vacumm heat treatment we are constantly developing our toolings which give us enhanced and a better life as compared to conventional methods of developing dies and toolings.
Our " Bigboltnut " brand of fasteners have a better shelf life and a better performance, we offer world class manufacturing solutions to our customers With the help of advanced toolings we offer accurate forging tolerences on our bolts and sockets with precision controls. These are further heat treated under controlled atmosphreic furnaces which provide 100% perfect heat treatment results, we also do thread rolling on our bolts after heat treatment this provides better threads which can with stand higher fatigue strength over a period of time.

Bigboltnut as the name suggests manufactures in India all hex bolts and nuts by hot forging process / hot forged bolts and nuts, we use friction screw press and forge our bolts and nuts by hot forging method only. We are able to hot forge bolts and nuts in carbon steel, alloy steel and stainless steel grades from M-20 to M-100 diameter and upto 1500 mm length. The Hot forging, bolt forging, big diameter bolts forging, friction screw press, screw press, 350 ton forging press