:::::Welcome to the World of Industrial Paints Manufacturer, MOHAN PAINTS :::::

:: Blast Cleaning ::

Blast Cleaning is the ideal surface preparation method to achieve an ideal surface for painting.
In Blast cleaning an abrasive is directed at highly velocity against the surface. The abrasive are generally chilled iron steel shots/grits or coarse sand.

These are three recognized specification of Blast cleaning and all give three equivalent grades.

Specification

Grades
I II III

1.	British Standard B.S. 4232 - 1967	First Quality	Second Quality	Third Quality
2.	Steel Structure Painting council (USA) SSPC Specification	White metal	Near White	Commercial
3.	Swedish Standard Organisation	Sa3	Sa21/2	Sa2

:: Profiles ::

Blast cleaning produces a rough surface with an even profile of up to a maximum of 100 Micron. The Blast cleaning surface, should receive coating of much higher thickness then the profile so that the peaks are also adequately covered.

In Case of sand blasting, sand particles should be 12 to 80 mesh size depending on the profiles to be obtained.

In Case of shot blasting, the iron shots should measure 14-18 mesh size depending again on the profiles desired.

:: Mechanical Cleaning ::

Better then menual is mechanical cleaning. It is done by using pneumatic or electrical tools like power disc sander, power driven wire brush, chippers and rotary de-scalar.

:: Flame Cleaning ::

This process is better than mechanical cleaning but it can not be employed everywhere because it needs oxy-acetylene flame to remove old paint and rust. Besides being a fire hazards, it is expensive also.