Corrosion resistant seamless Butt Weld Fittings / Copper - Nickel Cap

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

Comparison Table of Standard Specifications for Cu-Ni 70/30 Pipe

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