1.The outer tube is an aluminum part and the inner tube is a hot-dip galvanized steel part 2.Explosion pressure lapping 3.Splicing Fittings and Line Fittings 4.For Connecting conductor
1. The inner joint pipe is a hot-dip galvanized steel part,and the outer joint and the two end liners are aluminum parts. 2. JY hydraulic butt ,JYD hydraulic lap 3. Splicing Fittings and Line Fittings 4. For Connecting conductor