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NXF UNS N04400/Monel400/NiCu30Fe/Alloy 400/NCu30 DN15-1200 Class150-2500 Nickel Alloy Forged Blind and Spacer Flange
2026-01-06 18:48 NXF-GROUP
11
Product Description
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.Blind and Spacer Flange Introduction
A Blind and Spacer Flange is a commonly used pipe fitting, typically made of a metal plate, circular in shape, and with multiple bolt holes, used for connecting to other pipe components. Here is an introduction to it:Features- Simple structure: Like a plate-type slip-on flange, it has no neck structure; it is connected to the pipe only by fillet welding the plate, making the manufacturing process relatively simple.- Low cost: Due to its simple structure, it eliminates some complex processing steps, resulting in high material utilization and lower manufacturing costs.- Easy installation: The pipe can be inserted into the flange's inner hole for welding; no high-precision alignment is required, resulting in high installation efficiency.- Wide applicability: It can be manufactured using various materials, such as carbon steel, stainless steel, and alloy steel, to adapt to different working environments and media.Blind and Spacer Flange Drawing
Monel400 Chemical Composition And Mechanical Properties
Blind and Spacer Flange Actual Product Image
Specification
Blind and Spacer Flange Produce Processing
1. Raw Material Selection & Blanking
- Select qualified carbon steel/stainless steel forgings (e.g.A105,304,316) compliant with flange standards; conduct chemical composition and mechanical property testing.
- Cut forgings into fixed-weight blanks by CNC sawing machine, ensure blank size accuracy and no surface defects.
2. Hot Forging Forming
- Heat blanks to optimal forging temperature in heating furnace, avoid overheating to prevent material grain coarsening.
- Forge blanks into socket weld flange rough shape by hydraulic press, ensure socket cavity preliminary forming and dense structure without cracks.
3. Rough Machining
- Fix forged blank on CNC lathe, rough machine outer circle, end face and socket cavity to remove excess allowance.
- Rough turn sealing face and welding socket, form basic flange structure matching drawing outline.
4. Heat Treatment
- Perform stress relief annealing on rough-machined flange to eliminate forging and machining internal stress, avoid deformation.
- Solution treatment and passivation for stainless steel flanges to enhance corrosion resistance and mechanical properties.
5. Finish Machining - Precision machine socket inner wall, ensure socket size matches branch pipe outer diameter for tight fit.
- Finish machine sealing face, outer circle, end face and bolt hole positions via CNC machine, ensure dimensional tolerance ≤±0.02mm.
- Machine welding groove at socket end to meet standard weld size requirements.
6. Bolt Hole Drilling & Chamfering
- Position flange on CNC drilling machine, drill bolt holes evenly in accordance with flange standards (ANSI, DIN, GB).
- Chamfer bolt hole edges and socket port to remove
burrs, prevent sharp edges from damaging gaskets and pipes.
burrs, prevent sharp edges from damaging gaskets and pipes.
7. Surface Treatment
- Carbon steel flanges: Adopt galvanizing, painting or anti-rust oil coating to prevent corrosion during storage and use.
- Stainless steel flanges: Conduct pickling and passivation to remove surface oxide layer, improve surface finish and corrosion resistance.
8. Quality Inspection
- Dimensional inspection: Use CMM, calipers and micrometers to verify socket size, bolt hole position, sealing face flatness.
- Surface inspection: Eliminate products with scratches, pits, cracks; check socket fit accuracy and welding groove quality. - Material verification: Re-inspect chemical composition of sampled products to ensure compliance with standards.
9. Marking & Packaging
- Mark flange model, material, pressure rating, standard number and batch number by laser engraving or stamping.
- Wrap qualified flanges with anti-rust paper, pack in wooden cases to avoid collision damage; store in dry ventilated warehouse.
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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