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NXF USN A36/DIN17100/10025-2/G3101 DN15-1200 Class 3000-9000 Carbon Steel A36 Black Oxide NPT Unions Piping Rotary Joint
2026-10-16 14:58 NXF GROUP
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Products Description
A36 Introduction
ASTM A36 is the most commonly used mild and hot-rolled steel. It has excellent welding properties and is suitable for grinding, punching, tapping, drilling and machining processes. Yield strength of ASTM A36 is less than that of cold roll C1018, thus enabling ASTM A36 to bend more readily than C1018. Normally, larger diameters in ASTM A36 are not produced since C1018 hot roll rounds are used.
A36 Black Oxide NPT Unions Piping Rotary Joint Introduction
A36 Black Oxide NPT Unions Piping Rotary Joint is a high-performance rotary connection component manufactured from A36 carbon steel. The outer housing adopts black oxide surface treatment, which forms a dense protective film to improve wear resistance and anti-rust capacity, maintaining stable appearance under normal working conditions. It is equipped with NPT standard threaded ports for convenient pipe connection and assembly.
This rotary joint integrates precision bearing assembly and high-performance sealing rings inside the cylindrical housing. It can realize continuous 360° rotation while conveying fluid media without leakage. The built-in sealing structure can withstand specified working pressure, and the NPT thread ensures tight pipe connection. The side port is designed for media input or grease filling to maintain smooth rotation and extend service life. Plastic thread caps are equipped to protect the thread from damage and contamination during storage and transportation.
With robust mechanical structure and reliable sealing performance, this A36 rotary joint is widely used in fluid transmission pipelines, hydraulic systems, cooling equipment and rotating machinery. It is suitable for applications requiring relative rotation between fixed pipelines and rotating parts, delivering stable fluid transfer without twisting the connected pipes.
This rotary joint integrates precision bearing assembly and high-performance sealing rings inside the cylindrical housing. It can realize continuous 360° rotation while conveying fluid media without leakage. The built-in sealing structure can withstand specified working pressure, and the NPT thread ensures tight pipe connection. The side port is designed for media input or grease filling to maintain smooth rotation and extend service life. Plastic thread caps are equipped to protect the thread from damage and contamination during storage and transportation.
With robust mechanical structure and reliable sealing performance, this A36 rotary joint is widely used in fluid transmission pipelines, hydraulic systems, cooling equipment and rotating machinery. It is suitable for applications requiring relative rotation between fixed pipelines and rotating parts, delivering stable fluid transfer without twisting the connected pipes.
A36 Black Oxide NPT Unions Piping Rotary Joint Drawing
A36 Chemical Composition And Mechanical Properties
Factory and Product Pictures
A36 Black Oxide NPT Unions Piping Rotary Joint Product Pictures
A36 PMI spectral testing proves
Video of a customer visiting us
Product processing
A36 Black Oxide NPT Unions Piping Rotary Joint Product Processing
1.Raw Material Inspection & Cutting
Adopt A36 carbon steel bar as raw material. Carry out strict incoming inspection to verify chemical composition, hardness and internal material quality, reject blanks with cracks and inclusions. Cut steel bars into fixed-length cylindrical blanks according to the rotary joint dimension requirements, preparing for subsequent CNC machining.
2.CNC Precision Machining
3.Deburring, Cleaning & Component Assembly
4.Pressure & Rotation Performance Testing
5.Surface Black Oxide Treatment
6.Final Inspection & Packaging
2.CNC Precision Machining
Process the cylindrical blank on CNC lathes and machining centers. Machine outer cylinder contour, internal cavity, NPT thread ports and side media holes. Strictly control thread tolerance, concentricity and surface roughness to guarantee accurate fitting for bearings, sealing rings and threaded union connections.
3.Deburring, Cleaning & Component Assembly
Remove all sharp burrs on machined threads, holes and edges. Clean all parts to eliminate cutting oil, metal chips and impurities. Assemble precision bearings, high-pressure sealing rings and internal spacer components inside the housing step by step, ensuring smooth rotation and proper preload of sealing parts.
4.Pressure & Rotation Performance Testing
Carry out dynamic rotation test and hydraulic pressure leakage test. Run the joint continuously to check rotation smoothness without jamming. Apply rated working pressure to inspect sealing performance, eliminate products with fluid leakage, abnormal friction or rotation noise.
5.Surface Black Oxide Treatment
Implement black oxide finishing on the outer A36 steel housing. Through alkaline oxidation process, form a uniform black conversion film on the metal surface to enhance rust resistance and wear resistance. Clean and dry the workpiece after treatment, install plastic thread protective caps on threaded ports.
6.Final Inspection & Packaging
Conduct final full inspection, including dimension recheck, thread integrity, appearance check and marking. Label qualified rotary joints with material grade, specification and batch information. Wrap finished products with protective film and pack them to avoid scratch and contamination during storage and shipment.
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?
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:
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:
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.
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
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.
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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