Product Item: Copper Nickel ASTM B111/ASME SB111 Tubes, Straight Tube and U Tube, U Bend, Copper Alloy Heat Exchanger Tube
Tubing Quality: Seamless
Materials: ASTM B111, ASME SB111, ASME SB466 C71500 Copper Nickel, 70/30 Copper Nickel
Suitable Service: High-temperature Application
Dimensions (OD & WT): according to the client's request

Source: https://www.landeepipe.com/70-30-copper-nickel-seamless-tubes-asme-sb111-sb466-c71500.html