https://www.nickelalloytubes.com/products/astm-b111-asme-sb111-copper-alloy-steel-pipe-tube/ ASME SB111 C70600 Tube Copper-nickel alloy that resists seawater corrosion and has high antifouling properties against marine microorganisms. You can find ASTM B111 tubes using ASME SB111 alloy are widely used in shipbuilding repair, petrochemical, natural gas, and other marine engineering and related industries. ASME SB111 materials, like SB111 C7060, have good corrosion resistance, especially in seawater. ASTM B111/ ASME SB111 TUBES PROVIDED BY YUHONG ASTM B111/ ASME SB111 Copper Alloy Steel Tube YUHONG GROUP provides the best ASTM B111/ ASME SB111 tubes including straight tube, U tube for heat exchanger, boiler, and superheater.