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NXF UNS N08020/Alloy 20/2.4660/NiCr20CuMo DN15-1200 Class3000-9000 Nickel Alloy 20 Forging Technology Socket Welding Coupling
2026-08-27 18:00 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.
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 Technology Socket Welding Coupling Introduction
The forged double-ended socket pipe fitting is a core connection component in industrial pipeline systems. It is a type of forged pipe fitting and is mainly used to connect pipes of the same diameter or different diameters, enabling the direct or
variable-diameter transmission of fluids. It is produced through high-temperature forging, cold processing shaping, and then machined into a socket and plug structure. It is fixed to the pipes by socket welding (SW) and has excellent sealing performance and reliability.
variable-diameter transmission of fluids. It is produced through high-temperature forging, cold processing shaping, and then machined into a socket and plug structure. It is fixed to the pipes by socket welding (SW) and has excellent sealing performance and reliability.
According to the diameter relationship, they can be classified as equal-diameter type (connecting pipes of the same diameter) and unequal-diameter type (connecting pipes of different diameters). The unequal-diameter type is further divided into concentric type (where the center lines of the pipes are aligned) and eccentric type (where the center lines are offset to avoid the accumulation of air bags when the horizontal pipe changes diameter).
The core advantages are reflected in three aspects:Firstly, high strength and toughness. The forging process makes the internal structure of the material dense, and its strength and toughness far exceed those of cast pipe fittings, capable of withstanding high-pressure conditions; Secondly, wide adaptability to various working conditions. Carbon steel (such as 20#, A105) has a temperature range of -200℃ to +650℃, stainless steel (304L,316L) is corrosion-resistant, and special alloys (Incoloy800H, etc.) can cope with strong corrosion and ultra-high temperature environments; Thirdly, high standardization. It complies with GB/T14383-2008 (Chinese standard), ANSI/ASME B16.11 (American standard), with specifications ranging from DN15 to DN250 (1/2" to 10"), pressure ratings of 150LB to 3000LB, suitable for most industrial scenarios.
It is widely applied in fields such as petrochemicals, metallurgy, ships, food and pharmaceutical machinery,
and power. It is a key component for achieving efficient and stable connections in pipeline systems.
and power. It is a key component for achieving efficient and stable connections in pipeline systems.
Alloy 20 Forging Technology Socket Welding Coupling Drawing
Alloy20 Chemical composition and mechanical properties
Factory and Product Pictures
Alloy 20 Forging Technology Socket Welding Coupling Product Pictures
Alloy 20 PMI spectral testing proves
Video of a customer visiting us
Product processing
Alloy 20 Forging Technology Socket Welding Coupling Product Processing
1.Material Preparation
Use rolled round steel or steel ingot profiles as the raw material. According to the specifications of the target pipe fittings and the material (carbon steel A105/20#, stainless steel 304/316L, etc.), precisely cut the length of the raw material to ensure the accuracy basis for subsequent forging and machining processes.
2. Heating treatment
Place the raw material in the heating furnace and set the heating temperature according to the material type: The carbon steel billet is heated to a temperature range of 1150℃ - 1250℃ (the austenitization temperature range); The stainless steel billet is heated to 1050℃ - 1150℃ to avoid excessive heating which could cause coarse grains. After heating, the surface of the billet shows a uniform oxide color, which is convenient for subsequent forging operations.
Place the raw material in the heating furnace and set the heating temperature according to the material type: The carbon steel billet is heated to a temperature range of 1150℃ - 1250℃ (the austenitization temperature range); The stainless steel billet is heated to 1050℃ - 1150℃ to avoid excessive heating which could cause coarse grains. After heating, the surface of the billet shows a uniform oxide color, which is convenient for subsequent forging operations.
3. Die forging
The heated billet is placed in a dedicated die forging equipment (such as a hydraulic press or a free forging press). Through the forging action of the upper and lower molds, the metal undergoes plastic deformation at high temperatures,
initially forming the outline shape of the double-ended pipe fitting. The technical patent mentions that the dedicated die forging equipment can optimize the mold structure to ensure that the metal flows uniformly and fills the mold cavity, effectively eliminating internal segregation and porosity in the steel ingot, and enhancing the overall density and strength of the pipe fitting.
initially forming the outline shape of the double-ended pipe fitting. The technical patent mentions that the dedicated die forging equipment can optimize the mold structure to ensure that the metal flows uniformly and fills the mold cavity, effectively eliminating internal segregation and porosity in the steel ingot, and enhancing the overall density and strength of the pipe fitting.
4. Machining and finishing
The forged blanks need to undergo precision machining using equipment such as lathes and milling machines: End fitting processing: Precisely machine the inner diameters, lengths and chamfers of the end fittings to ensure the fitting accuracy with the steel pipe (the tolerance is usually controlled within ±0.05mm); Surface treatment: Machine the outer circle to ensure coaxiality and surface roughness (Ra ≤ 3.2μm); Dimension calibration: Check the total length of the pipe clamp, the spacing of the fitting ports, etc., to ensure compliance with standards such as GB/T14383 and ASME B16.11.
5. Heat treatment strengthening
Carry out subsequent heat treatment based on the material: Carbon steel pipe clamps: undergo normalizing or quenching + tempering treatment to enhance hardness and impact resistance; Stainless steel pipe clamps: undergo solution treatment to eliminate forging stresses and restore the material's corrosion resistance. After heat treatment, aging stabilization is required to ensure long-term dimensional stability.
6. Surface Treatment and Inspection
Surface Treatment: Perform acid washing, passivation (for stainless steel), galvanization (for carbon steel corrosion prevention), etc. as per requirements;Quality Inspection: Conduct internal defect detection using ultrasonic testing, perform pressure resistance tests (such as burst tests for pressure grades of Class 3000/6000/9000), and inspect dimensions, threads (threaded pipe clamps), or flange fitting accuracy. Only after passing these checks can the products be stored.
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.
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
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."
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
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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