TECHNICAL INSIGHTS

Sunflex Metalloy Blog

Notes on copper-nickel metallurgy, fitting selection and piping design for marine, offshore and industrial projects.

Marine seawater piping system using copper nickel 90/10 forged fittings

Applications of CuNi 90/10 in the Marine Industry

Why copper-nickel 90/10 forged fittings remain the standard choice for seawater cooling, ballast and firefighting piping aboard ships and offshore platforms.

Side by side comparison of socket weld and threaded copper nickel fittings

Technical Guide

Socket Weld vs. Threaded Fittings: Which to Specify?

A practical comparison of socket weld and threaded copper-nickel fittings — installation method, pressure rating, leak-tightness and when to specify each.

Metallurgical microstructure comparison of copper nickel 90 10 and 70 30 alloys

Metallurgy

CuNi 90/10 vs. 70/30: A Metallurgical Comparison

Composition, strength and seawater flow-velocity limits compared across UNS C70600 and C71500 — and how to choose the right grade for your project.

Copper nickel weldolet and sockolet branch outlet forged fittings

Technical Guide

Weldolet, Sockolet & Threadolet: A Branch Outlet Guide

Understanding integrally reinforced branch outlet fittings per MSS SP-97 — where each outlet type is used and how to select the correct reinforcement.

Have a Technical Question About CuNi Fittings?

Our engineering team is happy to advise on grade selection, standards compliance or custom configurations.

Ask Our Team