Expansion Joint used for the irion and steel project expansion joint: 1. A large-scale factory ... materials includes of, Carbon steel, Titanium, Zirconium, Hastelloy, Nickel alloys, Duplex Steel and Austenitic Stainless Steel. 6.Tongpeng brand expansion ... electric power, thermal energy, water conservation, metallurgy, aviation, astronautics, ship, nuclear industry and pressure vessel and so on, 7. Our ...