**Main material
ASME/ASTM:A182-F304/F304H/F304L/F316/F316H/F316L/F316TI/F317L/F321/F321H/F347/F347H
Duplex/Super Duplex:A182-F51/60
Alloy Steel:A182-F5/F9/F11/F12/F22
**Main type:
 Threaded Flanges, Flat-welded Flanges, Slip-on Flanges, Blind Flanges, Welded Neck Flanges and so on. Our advantage:     *100% no welding repair   *100% for export   *100% size inspecting In house testing:  * PMI test for all material                                   * Ultrasonic testing                                  * Dye penetration testing Third part testing :*Hardness testing                                      *Impact testing machine                                      *Inter-crystalline corrosion