(a) All welding spatters, slags, exposed sharp edges and irregularities shall be ground off 
     by grinding wheels, pneumatic chisels or other suitable devices.

(b) Inspection for sign of grease, oil or solids on surface and remove oil, grease by 
     solvent cleaning and cleaned down by a non-toxic detergent in water. Solids and  
     deposits of rust to be removed by hand tools.


a) All fabricated steelworks will normally be abrasive inside enclosed Grit - Chamber built and equipped with sufficient lighting, dust exhaust and ventilation system.

b) Air control - Operating air pressure at blast nozzles will be at minimum of 621 Kpa supplied by electronically driven air compressors, air receiver through filters and dryer.

c) Abrasive control - Only dry and clean steel grits of gauge 40 to be used for blasting and broken down grits are automatically sieved and extracted.

d) Standard control - unless otherwise specified all steel - work surfaces to be painted shall be abrasive blast clean to class 2.1/2 and profile measured by comparator.

e) General - Abrasive blast cleaning and painting shall not be carried out together in the same are nor shall abrasive cleaning be carried out in proximity of recently applied paint.

In performance, particular attention shall be paid to joints, angles, pits and weld areas to ensure that their surfaces are brought to the required standard. After blasting, all dust and grits shall be removed from pockets and corners using clean and dry compressed air. Between cleaning and priming, the steel shall not allowed to be contaminated. All surfaces shall be prime coated before discoloration occurs and all cases within four of blast cleaning.

Surfaces not prime coated within prescribed time after blast cleaning for any reason shall be cleaned again with care before primer is applied.

f) Other methods of blast cleaning - these shall be carried out as and when become necessary and meet requirement of the relevant standard, but shall in all cases include the metal surface preparation procedure.


a) Paint shall be applied by means and to the film thickness indicated in the approved painting system schedules and data sheets.

b) The method of application shall be specified in the painting system schedules and data sheets.

c) Paint shall be applied so that an even film of uniform thickness, tint and consistency covers the entire surface, and is free of pin holes, runs, sags or excessive brush marks. If the paint film finish equal to that to first class brushwork.

d) Margins adjacent to field welds shall be taped off and left unpainted. After welding this unpainted section shall be painted as specified or approved method.

e) All painting materials shall be stored in accordance with the manufacturer's written recommendations or procedure for protection against temperature extremes, and shall be brought to the point of application in original sealed cans, supplied and delivered in labeled containers.

f) The labels shall be legible at the time of application and if possible shall include:

  • Brand Name/Name of Manufacturer

  • Formula or Specification Number

  • Colour

  • Manufacturer's Application Instruction

  • Validity date

g) Method of application - Conventional or Airless

The pressure on the material in the pot and of air at the spray gun shall be adjusted for optimum spraying effectiveness. The pressure on the material in the pot shall be adjusted when necessary for changes in elevation of the gun above pot. The atomising air pressure at the gun shall be high enough to properly atomise the paint but not too high as to cause excessive fogging of paint, excessive evaporation of solvent or loss of paint by over - spraying.

Best view with

Resolution 800 X 600

P.T. 1640, 5 1/2 MILES, JALAN MERU,
TEL : 603-3392 1687, 603-3392 4690
FAX : 603 - 3392 3005
E - MAIL : datae@streamyx.com
WEBSITE : www.datae.com.my