Before coating, the pipe surface is grit blasted to roughen the surface and remove surface rust. With the roughening formed after gritblasting, the surface grows approximately 300% and this event is necessary for the epoxy to adapt to the surface and shows better adhesion.Genarally Swedish Standards SA (ISO 8501 -1) is used in the cleaning grade (blasting grades) of the blasted metal surface, the classification starts with SA1 and can be improved up to SA3.

PIPE INTERNAL GRIT BLASTING LINE
MODELSIGB 48IGB 64IGB 100IGB 120
PIPE DIAMETERSMIN. 219 MM (8″) – MAX. 1219 MM (48″)MIN. 406 MM (16″) – MAX. 1626 MM (64″MIN. 610 MM (24″) – MAX. 2540 MM (100″)MIN. 610 MM (24″) – MAX. 3048 MM (120″)
THICKNESSMIN. 4 MM – MAX. 20 MMMIN. 4 MM – MAX. 25,4 MMMIN. 5 MM  – MAX. 25,4 MMMIN. 5 MM  – MAX. 25,4 MM
LENGHTMIN. 8 MT. – MAX. 16 MT.MIN. 8 MT. – MAX. 16 MT.MIN. 8 MT. – MAX. 16 MT.MIN. 8 MT. – MAX. 16 MT.
MATERIAL QUALITYUP TO X 65UP TO X 80UP TO X 80UP TO X 80