Skip to content
JAI SHREE INDUSTRIESArchitectural Metal & Filtration · Mumbai

Specialty alloys & fine perforation

Monel, SS 316L, titanium, copper and brass — perforated to tolerances that hold across a production run, in hole forms most plants will not quote.

Request a quoteWhatsApp us

Most perforation shops in Mumbai run mild steel and 304. This unit also runs Monel, 316L, titanium, copper and brass, in hole forms — dimple, capsule, oblong, hexagonal — that need dedicated tooling rather than a stock punch.

Fine perforation is its own discipline. Below about 1 mm the tooling is specialist, the feed is slower, and the web between holes becomes the limiting factor rather than the hole itself. We will quote it, but we will also tell you when a mesh would do the same job for less.

The group has had an import-export code since well before it was fashionable, and material test certificates are handled in-house. For OEMs and exporters that documentation is usually the deciding factor, not the price per sheet.

What we make in this line

  • Monel 400

    Seawater and acid service, slot and round hole

  • SS 316 / 316L

    Chloride and pharmaceutical duty

  • SS 304

    General stainless perforation

  • Copper & brass

    Decorative and electrical applications

  • Titanium

    Aggressive chemical service

  • Fine perforation

    From 0.5 mm hole diameter

  • Dimple & capsule holes

    Formed and slot perforation

  • Oblong & hexagonal

    Staggered and straight-line layouts

Hole patterns

Standard patterns for this line

Drawn to proportion rather than photographed. Any of these can be adjusted for hole size, pitch and open area — or send a pattern of your own.

  • Standard round

    60° staggered

  • Straight line round

    Rectangular pitch

  • Square

    Staggered

  • Hexagonal

    60° staggered

  • Side staggered slots

    Staggered

  • End staggered slots

    Staggered

Try the pattern designer to set your own dimensions and check they are manufacturable.

Applications

Where this line goes

  • Process equipment internals
  • Heat exchanger and condenser screens
  • Marine and offshore components
  • Speaker grilles and instrument panels
  • Sugar and food machinery screens
  • Export OEM components

Common questions

What is the smallest hole you can punch?
0.5 mm, but the governing rule is that hole diameter must be at least the sheet thickness. So 0.5 mm holes need sheet of 0.5 mm or thinner. On a 3 mm plate the minimum hole is 3 mm. Our pattern designer checks this as you type.
Do you supply material test certificates?
Yes, for alloy work where it is normally required — Monel, 316L, titanium. We have held an import-export code (IEC 0304084174) for years and handle export documentation in-house.
Why is Monel specified instead of 316L?
Seawater and hydrofluoric acid. Monel is a nickel-copper alloy that resists both where even 316L pits and fails. It costs considerably more, so it is specified when the service genuinely demands it — most often in marine and offshore demister pads.
Can you hold a tolerance across a production run?
Yes — that is what CNC perforation is for. Tell us the tolerance the drawing calls for and we will confirm whether we can hold it before quoting rather than after.

Other lines