NXF UNS N10276/2.4819/NiMo16Cr15W/Alloy C-276 DN15-1200 Class150-2500 Nickel Alloy C-276 Forged Flange Threaded Flanges

2026-11-06 17:24 NXF GROUP
1

Alloy C-276 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 nickel-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, solidsolution 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.

Threaded Flanges Introduction

Threaded flanges connect with pipes by internal threads, without welding, which is a detachable flange type. Internal threads are machined on the flange bore. During assembly, externally threaded pipes are screwed into the flange for positioning, and sealing is realized by gaskets on the face.

This flange is easy to install. No welding equipment or welding work is required on site, and there is no heataffected zone from welding. It is suitable for service conditions where welding is prohibited. The sealing face can be machined to different types per project standards, compatible with various gaskets to meet sealing requirements of different pressure classes.


Made of nickel alloy, it has excellent corrosion resistance and high-temperature mechanical properties, and keeps stable performance in corrosive piping. It is widely used for low and medium pressure process pipelines, as well as fireproof and explosion-proof occasions where hot work is forbidden, commonly seen in chemical, oil & gas and instrument piping systems for easy disassembly and maintenance.

Threaded Flanges Drawing
Alloy C-276 Chemical composition and mechanical properties
Factory and Product Pictures
Threaded Flanges Factory and Product Pictures
Alloy C-276 PMI spectrum test certificate
Customer visit to the factory video


Threaded Flanges Produce Processing

1. Raw Material Inspection

Check material certificate, appearance and dimension of nickel alloy forgings. Sampling test for physical and chemical properties. Production starts after passing inspection.

2. Cutting

Cut blanks according to drawing specifications with sufficient allowance reserved for forging and machining.

3. Forging

Form flange blanks by forging to refine microstructure, eliminate internal defects such as porosity and improve mechanical strength.

4. Rough Machining

Rough turn outer diameter, thickness and bore, leave finish allowance and mark bolt hole positions preliminarily.

5. Heat Treatment

Perform heat treatment as required to release forging stress, stabilize material structure and optimize mechanical properties.

6. Finish Machining

Precision turn sealing face and end face; machine internal thread, drill and ream bolt holes. Strictly control thread accuracy, surface roughness and all dimensional tolerances.

7. Non-Destructive Testing

Carry out NDT to detect surface and internal defects like cracks and inclusions.

8. Marking

Stamp specification, pressure class, heat number and material grade on flange body for traceability.

9. Surface Treatment

Remove burrs and cutting oil. Passivation protection can be applied upon request.

10. Final Inspection

Full inspection on dimensions, thread accuracy and sealing face quality. Verify documents and issue inspection reports.

11. Packaging & Warehousing

Protect threads and sealing faces, pack separately and store by classification.

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 qualitycertificate system and trademark certificate

5.Our NXF GROUP have a comprehensive aftersales 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%),EasternEurope(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),CentralAmerica(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?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 qualitycertificate system and trademark certificate

5.Our NXF GROUP have a comprehensive aftersales 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 aone-stop service.


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 toquantity.


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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