Spools we are blasting, priming and finish painting RAL 9010 (pure white) 325 microns of paint when finished. Serrated edge on flange is protected with an adhesive rubber flange protector, the internal of the pipe is protected from the egress of paint by a plastic 'bung'. 2 coats of Sigma coatings Sigmadur 205 and 1 coat of Sigmadur 550H.