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NXF UNS N04400/Monel400/NiCu30Fe/Alloy 400/NCu30 DN15-1200 Class3000-9000 Nickel Alloy Socket Welding Ends Union
2025-12-22 19:03 NXF-GROUP
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Monel 400 Introduction
Monel 400 alloy (UNS N04400/MCu-28-1.5-1.8/Ni68Cu28Fe) is a nickel-based alloy, primarily composed of nickel-copper alloy, with a melting point of 1300-1350°C. It exhibits good corrosion resistance in corrosive media such as seawater, hydrofluoric acid, and sulfuric acid. This alloy demonstrates stable mechanical properties and is suitable for working environments ranging from low to high temperatures. Welding can be performed using TIG, MIG, and manual arc welding, matched with Monel body material or EniCu-7 welding consumables. This alloy is mainly used in the manufacture of heat exchange equipment, chemical pipelines, reaction vessels, and other devices, conforming to standards including ASTM B 164 (bars) and ASTM B 127 (plates). During machining,shrinkage allowance must be allowed to ensure dimensional accuracy. This can be achieved through traditional machining methods; however, high-speed machining requires the use of water coolant.Socket Welding Ends UnionIntroduction
The two ends of the unions are secured together using nuts or clamps, and metal or non-metal seals are installed at the connection
surfaces to ensure reliable sealing. Similar to threaded unions, they also include a nut for connection and sealing.
Advantages of Socket Weld Unions:
Reliable and secure connection:
Welded connections have significantly higher strength than threaded connections, capable of withstanding higher pressures and vibrations.
Excellent leak prevention:
Welding provides a permanent leak-proof seal, suitable for applications with extremely high sealing requirements.
Easy installation:
Socket weld unions do not require precise alignment during installation, making the process relatively simple.
SOCKET-WELDING ENDS UNION DRAWING
Monel 400 Chemical Composition And Mechanical Properties
Specification
Socket Welding Ends Union Produce Processing
1. Raw Material Preparation
- Select corresponding metal materials (stainless steel, carbon steel, brass, etc.) based on product standards and application scenarios.
- Cut materials into blanks of specified sizes by sawing, shearing or cutting machines, and check blank size tolerance.
2. Forging/Forming
- Perform hot forging or cold heading on blanks to form the rough shape of union bodies, nuts and seats.
- Carry out shaping correction to ensure the basic structure of each component meets the preliminary dimensional requirements.
3. Precision Machining
- Union Body Machining: Turn the outer diameter, inner cavity, sealing surface and thread connection part; ensure the flatness of the sealing surface.
- Nut Machining: Process internal threads, torque-bearing surfaces and positioning steps by turning and tapping; verify thread matching accuracy.
- Seat Machining: Finish the sealing ring groove and contact surface through milling or turning to guarantee sealing performance.
4. Surface Treatment
- Remove burrs, sharp edges and machining residues of all components by deburring and polishing.
- Conduct anti-corrosion treatments as required: electroplating (galvanizing, nickel plating), passivation, pickling or spray coating.
5. Assembly
- Install sealing elements (rubber rings, PTFE gaskets) into the seat groove of the union body.
- Assemble the union body, nut and seat in sequence, and adjust the assembly clearance to ensure flexible and stable connection.
6. Quality Inspection
- Inspect the dimensions of each component (outer diameter, thread size, sealing surface flatness) with calipers, thread gauges and flatness testers.
- Perform pressure resistance and leakage tests on the assembled union fittings under specified working pressure.
- Check surface quality to eliminate products with defects such as cracks, pits and plating peeling.
7. Packaging and Storage
- Clean the qualified union fittings to remove oil stains and dust, and protect the threads with protective caps.
- Pack them in classified batches with anti-rust paper or plastic boxes, and label product specifications, pressure ratings and production batches.
- Store in a dry, ventilated warehouse, and avoid stacking heavy objects to prevent deformation of the fittings.
Packing & Delivery
Shipping
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals, machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories. Established in 1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship." Our advantage as follow: 1.We have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price. 2. We can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality. 3. Our biggest advantage is 3S service. Small quantity, short time, special materials.
FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled seriously.We Specialize in manufacturing about 21 years.We have professional testing department and testing equipment.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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