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NXF UNS N04400/Monel400/NiCu30Fe/Alloy 400/NCu30 DN15-1200 Class150-1500 Nickel Alloy Forged Plate Flanges
2026-01-05 17:45 NXF-GROUP
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Monel400 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.Plate Flanges Introduction
A plate flange is typically used in multiple industries, including the oil and gas sector, to connect and protect pipes from the outside world. This flange is formed using a flat piece of metal and is circular with a larger circumference that can withstand higher pressure levels.Its significant benefit lies in its durability, as it can establish strong connections between pipes of different sizes while
facing harsher temperature fluctuations. Plate flanges are versatile as they can be produced using a variety of metals, including but not limited to carbon steel, stainless steel, and alloy steel.
Uses of Plate Flange
Plate flanges connect pipes but can also serve as connectors for various system parts or seal off specific sections.
Plate flanges have a wide range of applications in the field of pipe fitting. They are an ideal choice when it comes to connecting metal pipes or joining different sections of a pipeline. Moreover, these flanges can separate two metal pieces that require being kept apart. Their versatility extends beyond metal pipes as they can join plastic pipes or even different parts of an air conditioning or heating unit.
PLATE WELDING FLANGE DRAWING
Monel400 Chemical Composition And Mechanical Properties
Plate Flanges Actual Product Image
Specification
Plate Flanges Produce Processing
1. Raw Material Selection & Cutting
- Select qualified carbon steel/stainless steel plates (e.g.A105,304,316) matching flange pressure rating; conduct chemical composition and mechanical property inspection.
- Cut plates into blanks of specified size via CNC flame/plasma cutting machine, ensure blank flatness and no edge deformation.
2. Rough Machining
- Fix blank on CNC lathe, rough machine both end faces to remove oxide layer and ensure thickness tolerance.
- Rough turn outer circle and inner bore to preliminary size, reserve 2-3mm machining allowance for finish machining.
3. Hole Drilling
- Position blank on CNC drilling machine, drill bolt holes evenly according to flange standard (e.g.ANSI, DIN, GB).
- Process bolt hole chamfers to avoid sharp edges, ensure hole position accuracy meets installation requirements.
4. Finish Machining
- Precision machine sealing surface (flat face/raised face) to standard roughness Ra≤3.2μm, ensure sealing performance. - Finish turn outer circle, inner bore and end faces to design dimensions, verify dimensional tolerance with precision gauges.
5. Bevel Processing
- Machine welding bevel at inner/outer edge of flange (if required) via milling machine, ensure bevel angle matches pipe welding demand.
- Deburr all machined surfaces to remove burrs and machining marks.
6. Heat Treatment (Optional)
- Conduct stress relief annealing for carbon steel flanges to eliminate machining internal stress, avoid deformation.
- Perform solution treatment for stainless steel flanges to enhance corrosion resistance.
7. Surface Treatment
- Carbon steel flanges: Anti-rust treatment via galvanizing/painting to prevent corrosion.
- Stainless steel flanges: Pickling and passivation to remove surface oxide layer, improve corrosion resistance.
8. Quality Inspection
- Dimensional inspection: Verify outer diameter, inner bore, thickness and bolt hole position with CMM/calipers.
- Surface inspection: Reject flanges with scratches, pits or uneven sealing surface; check bevel angle and chamfer quality.
9. Marking & Packaging
- Mark flange model, material, pressure rating, standard number and batch number via stamping/laser engraving.
- Wrap qualified flanges with anti-rust paper, pack in wooden cases; store in dry ventilated warehouse pending delivery.
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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