ASTM B151 C70600 Copper Nickel Alloy Forged Flange Weld Neck RF RTJ FF B16.5 For Connection

The UNS C70600 is a copper-based alloy with nickel as the main alloying element, which contains about 90% copper and 10% nickel. The thermal conductivity of copper-nickel alloy is close to that of carbon steel, the thermal expansion coefficient is close to that of austenitic stainless steel, and the melting point is 1149℃.

The UNS C70600 argon arc welding process is applicable to avoid defects such as cracks and pores during welding. The weld strength of UNS C70600 is higher than that of the base metal, and the weld quality is good. The Cu-Ni alloy tube UNSC70600 was welded in the platform seawater cooling pipe system by this welding process, the weld RT pass rate reached 100%, and the pipeline water pressure test and air tight test passed once, ensuring the welding quality of seawater cooling pipe.

UNS C70600 corrosion resistant copper alloy has good corrosion resistance, especially resistance to high-speed flow of polluted seawater corrosion, with good stress resistance. Therefore, Cu-Ni90/10 pipes are often used in the sewage treatment of offshore platforms. When welding BFe10-1-1 pipe, manual DC tungsten argon arc welding machine is generally selected as welding equipment. As a kind of gas shielded welding, tungsten inert gas shielded welding, also known as TIG welding, tungsten or tungsten alloy with high melting point is selected as the electrode so that the electrode will not melt when the arc burns, thus ensuring the constant length of the arc and good welding quality. In the welding process, the gas body will cover the arc area of the molten metal and the electrode and isolate it from the air in the tungsten argon arc welding, and argon gas is used as the protection gas.

Chemical element(%)

Mechanical property

1. Functions of Flange

Connection: Flanges can be used to connect devices such as pipes, valves, pumps and containers. Different equipment, pipes or parts can be closely connected by fixing flanges with screws or nuts.

Sealing: The flange adopts the principle of face sealing, which can effectively ensure that the connection will not leak, water leakage or oil leakage. The sealing effect is good, which can ensure e and stable operation in the production process.

Support: Flanges can be used as supporting parts of pipelines or equipment, which can improve the stability of pipelines or equipment and reduce problems such as vibration and deformation caused by force.

Easy disassembly: flange disassembly is simple and convenient, suitable for equipment and pipes that need to be cleaned, repaired or replaced frequently, and also convenient for maintenance personnel to maintain.

2. Advantages of Flange

Reliability: The flange adopts the principle of face sealing, and the connection is strong, which can ensure the e and reliable operation of the fluid conveying system. And can still operate stably under high temperature or high pressure working conditions.

Economy: The manufacturing cost of flange is relatively low, and the assembly is simple through screws or nuts and other fixed methods, which can improve production efficiency and reduce production costs.

Easy installation: the flange is designed with factors such as disassembly, cleaning, maintenance and replacement considered, which has good operability and can reduce manpower, material resources and time costs.

Versatility: The flange adopts standardized design, meets the standards and specifications of many countries and regions, and can be used with a variety of different brands of equipment and pipes.

Wide connection range: Flanges are widely used in various materials, specifications and types of equipment and pipelines, such as steel, chemical, oil, natural gas, power and water conservancy and other fields.

Diversified choice: there are many types and specifications of flanges, and suitable types and specifications can be selected according to different needs, which can meet various production processes and customer needs.

Wide connection range: Flanges are widely used in various materials, specifications and types of equipment and pipelines, such as steel, chemical, oil, natural gas, power and water conservancy and other fields.

Diversified choice: there are many types and specifications of flanges, and suitable types and specifications can be selected according to different needs, which can meet various production processes and customer needs.