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Long Welding Neck/LWN Flange for Carbon steel and Stainless steel

Long Welding neck made in A105 , A105N material,used for pipeline and fastener.Size range:1/2"-48". standard :ASME B16.5. 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.


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