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NXF UNS N08020/Alloy 20/2.4660/NiCr20CuMo DN15-1200 Class3000-9000 Nickel Alloy 20 Forging Fitting Threaded Coupling
2026-08-31 18:30 NXF GROUP
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Product Description
Alloy 20 Introduction
Alloy 20 is an austenitic stainless steel containing less than 50% iron and is used in applications involving sulfuric acid. Its
corrosion resistance also finds other applications in the chemical, petrochemical, power generation, and plastics industries.Alloy 20 exhibits superior resistance to pitting and chloride ion corrosion compared to 304 stainless steel and is comparable to 316L stainless steel. Its copper content protects it from sulfuric acid. Alloy 20 is typically selected to address the potentialstress corrosion cracking issues of 316L stainless steel.
Alloy 20 Forging Fitting Threaded Coupling Introduction
Forged Threaded Coupling is a high-pressure integral forged pipe fitting, specially designed for connecting and docking two sections of pipelines. As one of the most commonly used pipeline connection accessories, it features double internal thread structure at both ends, realizing fast, stable and weld-free pipeline assembly.
Manufactured by strict hot forging technology, the coupling owns compact integral structure, high structural density and excellent mechanical strength. It effectively resists high pressure, high temperature and pipeline vibration, with stable sealing performance and no leakage risk. The product supports multiple thread standards including NPT, BSPT and BSPP, fully compliant with ASME B16.11, MSS-SP-83 and ANSI B1.20.1 industrial standards.
Available in pressure classes of 3000LB, 6000LB and 9000LB, the forged threaded coupling covers diverse material options such as carbon steel, stainless steel, alloy steel and duplex steel. It is widely applicable for high-pressure piping systems in oil & gas, petrochemical, power generation, fire protection, industrial equipment and fluid transmission projects. It is suitable for both straight pipe connection and on-site pipeline maintenance and replacement, featuring simple installation, good interchangeability and high safety.
Manufactured by strict hot forging technology, the coupling owns compact integral structure, high structural density and excellent mechanical strength. It effectively resists high pressure, high temperature and pipeline vibration, with stable sealing performance and no leakage risk. The product supports multiple thread standards including NPT, BSPT and BSPP, fully compliant with ASME B16.11, MSS-SP-83 and ANSI B1.20.1 industrial standards.
Available in pressure classes of 3000LB, 6000LB and 9000LB, the forged threaded coupling covers diverse material options such as carbon steel, stainless steel, alloy steel and duplex steel. It is widely applicable for high-pressure piping systems in oil & gas, petrochemical, power generation, fire protection, industrial equipment and fluid transmission projects. It is suitable for both straight pipe connection and on-site pipeline maintenance and replacement, featuring simple installation, good interchangeability and high safety.
Alloy 20 Forging Fitting Threaded Coupling Drawing
Alloy 20 Chemical composition and mechanical properties
Factory and Product Pictures
Alloy 20 Forging Fitting Threaded Coupling Product Pictures
Alloy 20 PMI spectral testing proves
Video of a customer visiting us
Product processing
Alloy 20 Forging Fitting Threaded Coupling Product processing
1.Raw Material Preparation & Inspection
The entire production implements strict raw material quality control. All incoming steel bars and billets are strictly inspected for chemical composition, mechanical properties and material certificates to ensure full compliance with international standards.Only qualified raw materials are adopted and precisely cut into standard blanks according to coupling dimensional specifications,laying a solid foundation for standardized forging production.
2.Hot Forging & Shaping
The qualified blanks are heated to professional forging temperature by industrial heating equipment, and integrally forged into coupling blanks through hydraulic forging process. The one-piece hot forging structure ensures high density, uniform texture and excellent overall strength. After forming, trimming is performed to remove forging flash and burrs, ensuring regular outer shape and accurate benchmark size for subsequent processing.
3.Heat Treatment & Surface Cleaning
4.Precision Machining & Thread Processing
Precision machining is carried out on inner holes and end faces of the coupling to ensure dimensional accuracy and flatness.Double internal threads at both ends are finely processed in strict accordance with ASME B1.20.1 standards, supporting NPT, BSPT, BSPP and other thread types. All thread tolerance and inner diameter parameters are precisely controlled to guarantee tight sealing, accurate fitting and smooth assembly performance.
5.Strict Testing & Marking
All finished products pass comprehensive dimensional inspection including inner diameter, wall thickness and overall length. For high-pressure engineering applications, optional non-destructive testing such as UT, MPI and PT is available to detect potential internal and surface defects. Qualified couplings are permanently stamped with logo, material grade, heat number, pressure class and execution standard for complete traceability.
6.Surface Treatment & Finished Packaging
According to application requirements, finished products are treated with anti-corrosion and anti-rust processes such as black oxide treatment and galvanization, as well as anti-rust oil coating. After final visual inspection to eliminate cracks, thread damage and appearance defects, qualified products are packed in standard plywood cases or wooden crates, effectively preventing collision and corrosion during long-distance marine transportation and ensuring intact delivery.
The entire production implements strict raw material quality control. All incoming steel bars and billets are strictly inspected for chemical composition, mechanical properties and material certificates to ensure full compliance with international standards.Only qualified raw materials are adopted and precisely cut into standard blanks according to coupling dimensional specifications,laying a solid foundation for standardized forging production.
2.Hot Forging & Shaping
The qualified blanks are heated to professional forging temperature by industrial heating equipment, and integrally forged into coupling blanks through hydraulic forging process. The one-piece hot forging structure ensures high density, uniform texture and excellent overall strength. After forming, trimming is performed to remove forging flash and burrs, ensuring regular outer shape and accurate benchmark size for subsequent processing.
3.Heat Treatment & Surface Cleaning
To eliminate internal forging stress and stabilize mechanical performance, all forged couplings undergo standardized heat
treatment including annealing, normalizing or quenching and tempering based on different material properties. After heat
treatment, shot blasting or sand blasting is applied to completely remove surface oxide scales, obtaining a clean and smooth forging surface free of impurities.
treatment including annealing, normalizing or quenching and tempering based on different material properties. After heat
treatment, shot blasting or sand blasting is applied to completely remove surface oxide scales, obtaining a clean and smooth forging surface free of impurities.
4.Precision Machining & Thread Processing
Precision machining is carried out on inner holes and end faces of the coupling to ensure dimensional accuracy and flatness.Double internal threads at both ends are finely processed in strict accordance with ASME B1.20.1 standards, supporting NPT, BSPT, BSPP and other thread types. All thread tolerance and inner diameter parameters are precisely controlled to guarantee tight sealing, accurate fitting and smooth assembly performance.
5.Strict Testing & Marking
All finished products pass comprehensive dimensional inspection including inner diameter, wall thickness and overall length. For high-pressure engineering applications, optional non-destructive testing such as UT, MPI and PT is available to detect potential internal and surface defects. Qualified couplings are permanently stamped with logo, material grade, heat number, pressure class and execution standard for complete traceability.
6.Surface Treatment & Finished Packaging
According to application requirements, finished products are treated with anti-corrosion and anti-rust processes such as black oxide treatment and galvanization, as well as anti-rust oil coating. After final visual inspection to eliminate cracks, thread damage and appearance defects, qualified products are packed in standard plywood cases or wooden crates, effectively preventing collision and corrosion during long-distance marine transportation and ensuring intact delivery.
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 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."
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."
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,Russianwing Machine Bottle Making Machine Bottle Moulding Machine
PET Bottle Making Machine is suitable for producing PET plastic containers and bottles in allshapes.
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,Russianwing Machine Bottle Making Machine Bottle Moulding Machine
PET Bottle Making Machine is suitable for producing PET plastic containers and bottles in allshapes.
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