Compensator, Metal Bellows, Expansion Joint manufacturer / supplier in China, offering Non Welding Slip on Loose Lap Galvanized Ms Gi Back Ring Flange, Monolithic Insulating Joint 4 Inch DN100 Sch80 Class150 300 600 900, Monolithic Insulating Joint Butt Weld End Class150 300 600 900 1500 and so on.