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BHOLA RAM STEELS PVT. LTD.

JAGDAMBA ISPAT PVT. LTD. is now amalgamated to BHOLA RAM STEELS PVT. LTD.

An ISO 9001:2008 Certified Company
The  only  unit in Eastern & Northern India as well as in North –East region  to manufacture Electroforged Grating,Transmission Tower.
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In  elctroforged  process  cross bars  are press-locked  into  unweakened  bearing bars by way of  high pressure  and electrofusion. The process   is   completely automated resulting in high productivity and better quality.
Round or twisted bars are pressed and simultaneously resistance welded into solid bearing bars obtaining perfectly homogeneous weld at every intersection without any air gaps. Thus the grating panels have high stability, maximum strength and optimum load distribution.   

The scientific endeavor produced outstanding results in terms of quality, speed and resultant economy. This effectively replaced manually fabricated gratings.  The 1/4" square twisted cross bars or bars as per customer requirement  are welded or electro-forged to the rectangular shaped bearing bars by a process that   combines intense hydraulic pressure with a powerful electric current. This results in   strong, durable grating suitable for a wide range of application                     

Advantages

As done in Conventional Method bearing bars are not punched to accommodate cross bars. Full depth of bearing bars is effectively utilized thus making electroforged gratings stronger than conventional gratings made from same steel section.

Electrofusion eliminates  weld  defects  such  as  porosity, undercut, blowholes etc. observed in manual welding.  No slag is formed thereby giving better aesthetic value to the grating.

Automated process with elimination of punching and clearing gives high productivity.  Delivery  time is drastically reduced.

Difference between

     Manually Fabricated Gratings          Electroforged Gratings

Construction is primitive and orthodox.

Notches are punched along the bearing bars to allow cross bars to fit in. This weakens the bearing bars.

Large air gaps lead to poor weld.

Intersections are prone to rusting as they don’t lend to perfect painting surface finish.

Moderate Strength

Load bearing capacity - 25% less than electroforged gratings.

Cutouts not as strong and stable as electroforged gratings.

Handmade/ fabricated gratings are not very precise in dimensions.

Because of arc welding, flux, which causes imperfect galvanizing leaves behind black spots.

 

 Construction is highly specific.

Cross bars are pressed into solid bearing bars without any notches  and as such the strength of bearing bars is not reduced.

Every intersection weld is homogeneous and hence there are no air gaps.

 Homogeneous forged welds give :

   High strength to gratings.

   High load bearing capacity.

Excellent stability (incomparable resistance to twisted and bending distortion.

Cutouts have a high degree of strongness and stability.

Accuracy of dimensions is far superior. This speeds up  fixing operations of gratings. This means more cost effective.

Perfectly non skid yet smooth walking surface as cross bars are fully pressed into the bearing bars. 

  Finishing

Hot Dip Galvanized ,  Powder Coated,  PVC Coated, Self Color,  Red Oxide Primer, Other Paints Enamel,  Epoxy etc. as  specified.

Grating are mainly of two types :

1. Press locked gratings

2. Electroforged gratings 

                Stair Threads 

                Accessories

                Metal Finish Description

 Cross bars and bearing bars

The bearing bar steel is of two types which are  produced in equivalent standard.

       a )  Plain     :    The top surface  is smooth & plain.

      b)   Serrated :     The top surface is serrated for providing more anti slip  Property.

             Width          :      25mm, 30mm, 32mm, 40mm

             Thickness    :      3mm, 5 mm, 6mm

  Centre to Centre Bearing Bar Spacing :

          This is the centre distance between two adducent bearing bar ,

          Standard Size    30/ 33 / 41 mm

 Cross Bar  : The cross bar steel is of two types

  a)  Round

  b)  Square Twisted   :  Normally Square twisted bar is used because it provides anti skidding property.

  Normally cross bar size is  of  6mm.

  Centre to Centre Cross bar spacing :  Sizes are 50/100  mm 

  Width of Grating    :  It can be produced  upto maxm. of  1.0  mtr. width 

  Length of Grating  :  Normally 6 mtr. Length.

                          

     

  Product Application

  Gratings are Used in the following Industries :

Power Plants   Oil Refinery      Cement Plant      Chemical Plnt         Ship Building    

Port Trusts     Construction Sites    Fertilizer Plants       External fencing and Gates

Flooring and Stairtreads to walkways and stairways      Other Industries

 

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