Copper Slag Blasting Services

Copper slag blasting of large structures, at our yards or on site.

Request a Blasting Quote Share a Drawing on WhatsApp
  • For large surface areas
  • Bengaluru facilities or your site
  • Sa 2½ before coating
Blasters in protective gear preparing a large steel pipe section on site

Why Copper Slag Suits Large Structures

Copper slag is a by-product of copper smelting, crushed and graded into a hard, glassy, angular abrasive. It cuts quickly through rust, mill scale and old coatings, and leaves a sharp profile that suits both paint and thermal spray.

It is practical for open-air blasting of large surface areas, and it is low in free silica, which makes it a safer choice for blasters than river sand.

Our teams travel with their own compressors, blast hoppers and hoses, so that blasting can begin as soon as access and permits are in place.

Blast cleanliness reference chart: three starting conditions of rusted steel, each shown blasted to brush-off, commercial, near-white and white metal, beside a table of equivalent SSPC, NACE, SIS and ISO grades
Large structures on site are usually blasted to near-white metal (Sa 2½), the fourth row, before metallizing or a high-performance paint system.

When Copper Slag Is Appropriate

Structures That Cannot Be Moved

Tanks, chimneys, bridges and plant steelwork are blasted where they stand.

Large Surface Areas

Fast cutting maintains progress across thousands of square metres of steel.

Heavy Rust and Old Coatings

Failed paint systems and pitted rust are stripped back to bare steel.

Before Metallizing on Site

Provides the angular profile that thermal spray zinc and aluminium require.

Specification

Abrasive
Graded copper slag; steel grit and aluminium oxide as the project requires
Cleanliness
ISO 8501-1 Sa 2½, or as specified
Profile
Sharp and angular
Where
At our facilities in Bengaluru or at your site
Site equipment
15 air compressors, 15 blast hopper and hose sets, 6 air receivers
Inspection
Visual comparison with ISO 8501-1 and a surface profile gauge

Process Steps

Diagram in four stages: a storage tank is surveyed on site, blasting equipment is set up, the tank wall is blasted, and it is primed the same day
Why It MattersFreshly blasted steel starts to rust again quickly, so on site we coat it in the same shift. Illustrative diagram.

  1. Survey and Plan

    We assess access, the area to be blasted and your shutdown window, and plan the crew, equipment and sequence of work.

  2. Set Up

    Compressors, hoppers and hoses are positioned, and nearby equipment is protected from abrasive and dust.

  3. Blast

    The structure is blasted section by section to the agreed grade.

  4. Coat in the Same Shift

    Each blasted section is metal sprayed or primed before it can rust, so that blasting and coating progress together.

Applications

Copper slag blasting is the method by which we prepare most large structures for coating at cement, power, refinery and chemical plants.

  • Storage tanks, including crude oil tanks
  • Chimneys and stacks
  • Cement plant preheaters, ducts and kiln shells
  • Bridges and girders
  • Pipelines and pipe racks
  • Ship and port structures

Frequently Asked Questions

Should copper slag or sand be used?
Both are suitable for blasting. Copper slag cuts faster, gives a sharper profile and is low in free silica, so we usually prefer it for large structures and before thermal spray.
Can you work while our plant is running?
In many cases, this is possible. We section off the area, protect nearby equipment and work within your permits. For hot or live equipment, we plan the work into a shutdown.
How quickly can you begin?
Once access, permits and the scope have been agreed, our team mobilises from Bengaluru with its own equipment. Please share your shutdown dates and we will plan around them.

Related Services

Abrasive blasting

Abrasive blasting to Sa 2½ in preparation for coating

Grit blasting

A sharp anchor profile for thermal spray coatings

Thermal spray aluminium

Protection for high-temperature, marine and chimney service

Send a Drawing for a Blasting Quote

Share the drawing or photographs, the present condition of the steel and the grade you need, such as Sa 2½. One of our engineers will reply with the method and a quotation.

Call+91 96861 11973 WhatsAppPhotographs and drawings Emailthermalspray@mythrimetallizing.net
  • Reply within one working day
  • Drawings kept confidential
  • Email acknowledgement

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