thread flanges, socket welding flanges made in A105 , A105N material,used for pipeline and fastener.Size range:1/2"-120". standard :ASME B16.5 B16.47 ,AWWA BS3293 .The company is appreciated by the major international clients worldwide and its flanges and  forged components are part of the main oil & gas projects.

Technical consultancy, highly quality products, both standard and special ones, service excellence are the key factors highlighting the Baolongda  activities.