NXF UNS N10276 2.4819/NiMo16Cr15W/C276 OD DN15-1200 Class150-2500lb Nickel Alloy Forging Technology Spectacle Blind Flange

2026-07-21 11:43 NXF GROUP

Product Description

C276 Introduction

Super alloys or high performance alloys are available in a variety of shapes and contain elements in different combinations to obtain a specific result. These alloys are of three types that include iron-based, cobalt-based and nickel-based alloys. The ickel-based and cobalt-based super alloys are available as cast or wrought based alloys according to composition and application.
Super alloys have good oxidation and creep resistance and can be strengthened by precipitation hardening, solid-solution hardening and work hardening methods. They can also function under high mechanical stress and high temperatures and also in places that require high surface stability. HASTELLOY(r) C276 is a wrought corrosion-resistant alloy that resists the development of grain boundary precipitates that degrade corrosion resistance.
The following datasheet provides an overview of HASTELLOY(r) C276.

C276 Forging Technology Spectacle Blind Flange Introduction

The spectacle blind flange plate, also known as the 8-character blind plate, is a special isolation component for chemical and oil and gas pipelines. It is integrally formed and consists of a solid blind plate section and a hollow flow guiding section. It complies with the HG/T20615 and ASME B16.5 standards, is suitable for pressure ratings ranging from Class 150 to Class 2500, and offers a full range of DN15-DN1200 specifications. The material options include carbon steel, stainless steel, and nickel-based alloys, and it is suitable for high-temperature and high-pressure, as well as acid, alkali, and seawater corrosion conditions. The overall shape is in the form of an eight. One end is solid for complete pipe isolation, ensuring the safety of equipment maintenance; the other end has a through hole to maintain normal medium flow, and the switching of working conditions does not require additional assembly components. The plate surface undergoes precise milling processing, with a high level of flatness of the sealing surface. When paired with gaskets, it can effectively prevent leakage. The plate body is engraved with specifications and flow direction markings, facilitating quick identification of the on/off status on-site. Compared to the combination of a single blind plate and gasket, the eight-character flange plate is convenient for disassembly and assembly, and switching the on/off state only requires flipping the component, significantly reducing the time for pipeline isolation operations and eliminating the risk of misoperation. It is widely used in refining, coal chemical, seawater desalination, power plant pipelines, and is commonly used in equipment maintenance, pipeline segmentation, system replacement and other scenarios. It comes with inspection and material testing certificates upon factory delivery, meeting the safety requirements of industrial pipelines in both domestic and international standards.

C276 Forging Technology Spectacle Blind Flange Drawing

C276 Chemical composition and mechanical properties

Factory and Product Pictures

C276 Forging Technology Spectacle Blind Flange Product Pictures

C276 PMI spectral testing proves

Video of a customer visiting us

Product processing

C276 Forging Technology Spectacle Blind Flange Product Processing

1. Material selection: Select carbon steel, stainless steel or nickel-based alloy materials based on the working conditions. Verify the material certificates and confirm that the element contents meet the standards through component testing to ensure that the raw materials have no cracks, slag inclusions, etc.

2. Cutting and blanking: According to the order specifications, use CNC cutting equipment to precisely cut the blanks, forming an eight-shaped rough piece. Strictly control the size errors and reserve reasonable processing margins to ensure the regularity of the blanks.

3. Forming processing: Process the blanks by forging or machining to create the eight-shaped contours of the solid blind plate section and the hollow guide section. Roughly polish the surface of the plate and remove burrs and flash.

4. Precision finishing: Focus on processing the sealing surfaces, bolt holes and guide holes. Use CNC equipment to ensure the dimensional accuracy. The sealing surfaces undergo grinding treatment to ensure the flatness meets the standards and complies with the requirements for preventing leakage.

5. Heat treatment and inspection: Conduct heat treatment to eliminate internal stress and enhance the material properties. Then, carry out non-destructive testing, size re-measurement, and inspect for defects. After passing the inspection, perform rust prevention treatment, engrave labels, package for delivery, and attach the inspection report.

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.

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 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."

C276 Forging Technology Spectacle Blind Flange Certifications

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