... China Special Equipment (pressure piping component) Manufacturing Permit and passed the ISO9001 quality control system authentication. 3. ... Titanium, Zirconium, Hastelloy, Nickel alloys, Duplex Steel and Austenitic Stainless Steel. 6.Tongpeng brand expansion joint products ... , metallurgy, aviation, astronautics, ship, nuclear industry and pressure vessel and so on, 7. Our products has been exported ...