Because manifolds are subjected to sour service and high pressure, high mechanical strength and corrosion resistance are required characteristics of the manifolds material.

Sandvik uses a hot isostatic pressing (HIP) manufacturing method based on powder metallurgy to ensure the required high mechanical strength of the components. The materials used are duplex and super-duplex stainless steels, austenitic stainless steels or nickel alloys, the best choices for sour service.

Excellent resistance to HISC

By using pure duplex, super-duplex or nickel alloy powder and powder metallurgically based hot isostatic pressing (PM HIP), Sandvik HIP products have excellent resistance to corrosion and hydrogen-induced stress cracking (HISC). Sandvik HIP products' resistance to HISC is documented in DNV RP-F112.

Example of manifold produced by Sandvik by hot isostatic pressing (HIP)