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NXF UNS C28000/JIS C2800/H62/ISO CuZn40/CZ109 Diameter M3-100 OD 15-600mm Copper Products Solid Brass Polished Round O Rings
2026-09-17 18:36 NXF GROUP
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Product Description
C2800 Introduction
Brass is a versatile copper-zinc alloy series with comprehensive mechanical and physical properties, including excellent
electrical and thermal conductivity, structural strength, surface hardness, wear resistance, ductility and outstanding corrosion resistance. Brass materials feature rich and adjustable surface colors ranging from yellow, red, silver to golden tones, which are widely adopted by designers and architects to optimize interior and exterior decorative effects for architectural projects. UNS C28000 (C2800) is a high-quality standard yellow brass alloy within the brass material system. It inherits superior ductility and stable machinability, supporting precision stamping, bending, forging and pressing forming processes. With uniform material texture, bright polishing performance and reliable atmospheric and freshwater corrosion resistance, C2800 brass maintains stable mechanical performance and long service life under conventional working conditions. Widely applied in plumbing pipe fittings,press-fit pipeline components, architectural decorative hardware, instrumentation accessories, valve parts and general mechanical engineering components, UNS C28000 brass serves as a cost-effective and multi-functional alloy for industrial connection and architectural decoration scenarios.
electrical and thermal conductivity, structural strength, surface hardness, wear resistance, ductility and outstanding corrosion resistance. Brass materials feature rich and adjustable surface colors ranging from yellow, red, silver to golden tones, which are widely adopted by designers and architects to optimize interior and exterior decorative effects for architectural projects. UNS C28000 (C2800) is a high-quality standard yellow brass alloy within the brass material system. It inherits superior ductility and stable machinability, supporting precision stamping, bending, forging and pressing forming processes. With uniform material texture, bright polishing performance and reliable atmospheric and freshwater corrosion resistance, C2800 brass maintains stable mechanical performance and long service life under conventional working conditions. Widely applied in plumbing pipe fittings,press-fit pipeline components, architectural decorative hardware, instrumentation accessories, valve parts and general mechanical engineering components, UNS C28000 brass serves as a cost-effective and multi-functional alloy for industrial connection and architectural decoration scenarios.
C2800 Solid Brass Polished Round O Rings Introduction
Solid Brass Polished Round O Rings are precision circular components manufactured from premium brass alloy. After fine polishing treatment, the rings obtain smooth, bright golden surfaces without burrs. They have good ductility and high structural stability,resistant to oxidation and corrosion under atmospheric and freshwater environments. These solid round O rings can withstand moderate tensile load, suitable for fixed connection, hanging assembly and decorative installation. They are extensively used in architectural decoration, marine hardware, pipeline accessories, furniture fitting, handbag hardware and general engineering assembly, delivering both reliable mechanical performance and elegant visual appearance.
C2800 Solid Brass Polished Round O Rings Drawing
C2800 Chemical composition and mechanical properties
Factory and Product Pictures
C2800 Solid Brass Polished Round O Rings Product Pictures
C2800 PMI spectral testing proves
Video of a customer visiting us
Product processing
C2800 Solid Brass Polished Round O Rings Product processing
1.Raw Material Inspection & Blanking:
Adopt high-quality standard copper-zinc brass rods and wires with stable alloy composition, excellent ductility and uniform internal texture. Strictly inspect raw material surface condition, mechanical properties and metallographic structure to eliminate cracks, inclusions and oxide defects. Qualified brass materials are precisely cut into fixed-length blanks according to product specifications, ensuring consistent size foundation for subsequent ring forming processing.
2.Surface Pretreatment & Round Forming:
2.Surface Pretreatment & Round Forming:
Complete professional degreasing, decontamination and acid cleaning pretreatment to remove surface oil, dirt and oxidation layers. Adopt precision die bending and cold forming technology to bend brass blanks into standard circular O-ring structures. Strictly control circular symmetry, roundness and dimensional tolerance to ensure regular ring outline and uniform structural stress distribution.
3.Welding Connection & Precision Shaping:
3.Welding Connection & Precision Shaping:
Perform precise butt welding on the ring joints to achieve firm and seamless connection. Completely remove welding slag, burrs and welding protrusions on inner and outer surfaces. Conduct integral shaping and roundness calibration to eliminate tiny deformation caused by bending and welding, ensuring uniform thickness, flat surface and standard geometric dimensions of each brass O ring.
4.Multi-Stage Mirror Polishing:
4.Multi-Stage Mirror Polishing:
Adopt systematic polishing procedures including rough grinding, fine grinding and mirror finishing for inner and outer ring surfaces. Gradually remove tool marks, scratches and oxidation spots to achieve ultra-smooth, burr-free and high-gloss golden surface. Precision polishing improves surface finish, enhances metal texture and optimizes corrosion and tarnish resistance for long-term service.
5.Anti-Tarnish Surface Treatment & Full Quality Inspection:
Conduct professional surface cleaning, passivation and anti-oxidation protection treatment to form a dense protective film, effectively preventing brass discoloration, oxidation and corrosion in atmospheric environments. Implement full-range quality inspection covering dimensional tolerance check, roundness test, surface gloss detection, structural firmness verification and appearance defect screening to ensure all products meet industrial assembly and decorative standards.
6.Sorting, Packaging & Warehousing:
6.Sorting, Packaging & Warehousing:
Accurately sort and count qualified solid brass polished round O rings by specifications. Adopt independent dust-proof, scratch-resistant and moisture-proof packaging to protect the polished high-gloss surface. All finished products are classified and stored in standardized warehouses and delivered after strict final inspection.
Our NXF GROUP advantage as follow
1.Our NXF GROUP 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 based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
Packing & Delivery
Packing
Delivery
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 in1980, 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:3S Service(Small Quantity/Short Time/Special Material)
Certification
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?
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；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese
6. Are you trading company or manufacturer ?
We are manufacturer.
7. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.
8. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
9. What is your terms of payment ?
Payment<=1000USD, 100% in advance.
Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese
6. Are you trading company or manufacturer ?
We are manufacturer.
7. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.
8. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
9. What is your terms of payment ?
Payment<=1000USD, 100% in advance.
Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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