TOBO GROUP based in Shanghai China , has been created to promote and distribute for the worldwide shipbuilding and offshore industries copper nickel pipes, fittings & flanges, recognized as the best compromise for seawater corrosion resistant line pipes material. TOBO GROUP offers:
- A single manufacturing source able to offer a complete range of copper nickel pipes and fittings produced within different factories of the group in accordance with all international standards.
- A customized service with high flexibility, deliveries directly from our production plants for large quantity requirements or from our stock for fast track projects.
- A team of specialists at your service, with more than 10 years experience in the copper nickel industry, who will help you to define the best technical and economical solutions, and will ensure their successful implementation.
Cupronickel (copper nickel) is an alloy of copper, nickel and strengthening elements such as iron and manganese. Cupronickel exhibits superior corrosion resistance in seawater. Because of this, it is used for marine hardware, piping systems and sometimes for the propellers, crankshafts and hulls of premium tugboats, fishing boats and other working boats. The cupronickel alloy technology has been known by the Chinese since the third century BC under the name white copper and was used in corrosive environments. It is still used extensively in modern boat building. It is uniquely qualified as an ideal candidate for piping systems in the ship-building industry due to its alloy properties, including low general corrosion rates in seawater, resistance to stress corrosion cracking due to ammonia in seawater, high resistance to crevice corrosion and stress corrosion due to chlorides, good pitting resistance, ready weldability, ease of fabrication and inherent resistance to biofouling. In some cases, cupronickel seawater piping systems can last a ship’s lifetime.
Characteristics of Copper Nickel Alloy ;
- Good Resistance to stress corrosion & cavitation erosion.
- Excellent resistance to sea water
- Good thermal stability (up to approx. 300 )
- Good cold - workability
- Good Welding and solder properties.
Comparison Table of Standard Specifications for Cu-Ni 90/10 Pipe
| | DIN 17664 2.0872 | DIN 86019 2.1972 | BS 2871 CN 102 | EEMUA 144-1987 UNS C7060x | MIL-T-16420K ASTM B 466 C 70600 | JIS H 3300 C 7060T Cu+Ni+Fe |
| Cu% Ni% Fe% Mn% C % Pb% S % P% Zn% Other imp. | rem. 9.0 - 11.0 1.0 - 2.0 0.5 - 1.0 max. 0.05 max. 0.03 max. 0.02 max. 0.02 max. 0.50 max. 0.30 | rem. 9.0 - 11.0 1.5 - 1.8 0.5 - 1.0 max. 0.05 max. 0.01 max. 0.005 max. 0.02 max. 0.05 max. 0.20 | rem. 10.0 - 11.0 1.0 - 2.0 0.5 - 1.0 max. 0.05 max. 0.01 max. 0.05 - - max. 0.30 | rem. 10.0 - 11.0 1.5 - 2.0 0.5 - 1.0 max. 0.05 max. 0.01 max. 0.02 max. 0.02 max. 0.20 max. 0.30 | rem. 9.0 - 11.0 1.0 - 1.8 max. 1.00 max. 0.05 max. 0.02 max. 0.02 max. 0.02 max. 0.50 - | rem. 9.0 - 11.0 1.0 - 1.8 0.2 - 1.0 - max. 0.05 - - max. 0.50 Cu+Ni+Fe+Mn : min 99.5% |
Comparison Table of Standard Specifications for Cu-Ni 70/30 Pipe
| | DIN 17664 2.0882 | BS 2871 CN 107 | MIL-T-16420K ASTM B 466 C 71500 | JIS H 3300 C 7150T |
| Cu% Ni% Fe% Mn% C % Pb% S % P% Zn% Other imp. | rem. 30.0 - 32.0 0.4 - 1.0 0.5 - 1.5 max. 0.05 max. 0.03 max. 0.02 max. 0.02 max. 0.50 max. 0.30 | rem. 30.0 - 32.0 0.4 - 1.0 0.5 - 1.5 max. 0.06 max. 0.01 max. 0.08 - - - | rem. 29.0 - 33.0 0.4 - 1.0 max. 1.00 max. 0.05 max. 0.02 max. 0.02 max. 0.02 max. 0.50 - | rem. 29.0 - 33.0 0.4 - 1.0 0.2 - 1.0 - max. 0.05 - - max. 0.50 Cu+Ni+Fe+Mn : min 99.5% |
Material
90/10 Copper Nickel Alloy
DIN 86013 2.1972, DIN 17664 2.0872
BS2871, 2872, 2875 CN102
EEMUA 144
ASTM B466, B467, C70600, MIL-T-16420K C70600
JIS H3300 C7060T
70/30 Copper Nickel Alloy
DIN 17664 2.0882
BS2871, 2872, 2875 CN107
ASTM B466, B467, C71500, MIL-T-16420K C71500
JIS H3300 C7150T
Dimension
DIN 86011, 86087, 86088, 86089, 86090
BS1640
ANSI B16.9, B16.28
JMS 7354
Size - 10 mm OD to 400 mm OD
Thickness - 1 mm to 10 mm
Grade - UNS NO. C70600 (CU-NI 90/10), UNS C71500 (CU -NI 70/30).
Pipe / Tube -
- Seamless Pipe / Tube
- Welded Pipe / Tube
Pipe Fittings - Buttweld / Socketweld / Threaded
- Elbow - Long & Short Radius in 45º, 90º & 180º
- Tee - Equal & Unequal
- Reducer - Concentric & Eccentric
- Cross
- Cap
- Stubend - Long & Short
- Nipple - Barrel & Swage
- Coupling - Full & Half
- Plug
- Union
- Weldolet
- Threadolet
- Sockolet
- Customised Fitting
Flange - Forged / Plate
- Slip On Flange
- Weld Neck Flange
- Blind Flange
- Ring Type Joint Flange
- Socketweld Flange
- Long Weld Neck Flange
- Lap Joint Flange
- Orifice Plate
- Customised Flange
Test Certificate
Manufacturer Test Certificate as per EN 10204 / 3.1B
