Flare Test

An expansion of the tube body when forced over a cone-shaped mandrel having a given tapered angle and a given cone length. The specimen lengths of coiled tubing (approximately 4" in length) are flared over a mandrel having a 60 included angle. For CT-90 Grade and lower, the ID at the mouth of the tube is flared until it is expanded to at least 21% of original ID without cracking.