Aluminum alloy coiled tubing and manufacturing method thereof

The invention discloses an aluminum alloy coiled tubing and a manufacturing method thereof. The aluminum alloy coiled tubing comprises, by weight, 0-0.4% of Si, 0-0.5% of Fe, 1.2%-2.0% of Cu, 0-0.3% of Mn, 2.1%-2.9% of Mg, 0.18%-0.28% of Cr, 5.1%-6.1% of Zn, 0-0.2% of Ti and the balance Al. The manufacturing method of the aluminum alloy coiled tubing comprises the steps of preparation of a coiled plate, longitudinal shearing of the coiled plate, lengthening of a steel belt, forming, welding and continuous coiling. The length of the aluminum alloy coiled tubing is 1000-6000 m, the yield strength of the aluminum alloy coiled tubing is 400 MPa or over, the tensile strength of the aluminum alloy coiled tubing is 500 MPa or over, and the hardness of the aluminum alloy coiled tubing is equal to or lower than 22 HRC. The aluminum alloy coiled tubing is low in weight, good in corrosion resistance and capable of being applied to deep oil and gas wells in complicated corrosion environment. 本发明公开了种铝合金连续管及其制造方法，根据重量百分比，该