NXF GROUP
Phone/Whatsapp:+8613917160311
Email: info@nxf-group.com
Email: Andrew@nxf-group.com
Email: Alice@nxf-group.com
English
NXF USN A36/DIN17100/10025-2/G3101 Diameter M6-M60 Grade4.8-12.9 Length 6-34mm A36 Fastener Black Oxide Hex Socket Pipe Plug
2026-10-13 18:02 NXF GROUP
2
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.
Black Oxide Hex Socket Pipe Plug Introduction
Black Oxide Hex Socket Pipe Plug, also known as internal hex pipe plug, is a common threaded sealing fastener. It is generally made of carbon steel with black oxide finish. The black oxide surface treatment forms a protective layer to offer slight corrosion resistance and reduce surface friction, while maintaining a matte black appearance.
This pipe plug features external threads for screwing into the threaded hole, with an internal hexagon cavity on the head, which allows installation and removal by hexagon wrench, providing convenient operation and high tightening force. It is widely used to seal and block redundant threaded ports on hydraulic systems, pneumatic equipment, oil pipelines, valve bodies and machinery housings to prevent fluid leakage and block dust and impurities.
These plugs are manufactured in accordance with standard thread specifications, including NPT, BSPP, BSPT and metric threads. They have good sealing performance after tightening, compact structure and stable mechanical strength, and are widely adopted in machinery, hydraulic, automotive and industrial equipment fields.
This pipe plug features external threads for screwing into the threaded hole, with an internal hexagon cavity on the head, which allows installation and removal by hexagon wrench, providing convenient operation and high tightening force. It is widely used to seal and block redundant threaded ports on hydraulic systems, pneumatic equipment, oil pipelines, valve bodies and machinery housings to prevent fluid leakage and block dust and impurities.
These plugs are manufactured in accordance with standard thread specifications, including NPT, BSPP, BSPT and metric threads. They have good sealing performance after tightening, compact structure and stable mechanical strength, and are widely adopted in machinery, hydraulic, automotive and industrial equipment fields.
Black Oxide Hex Socket Pipe Plug Drawing
A36 Chemical Composition And Mechanical Properties
Factory and Product Pictures
Black Oxide Hex Socket Pipe Plug Product Pictures
A36 PMI spectral testing proves
Video of a customer visiting us
Product processing
Black Oxide Hex Socket Pipe Plug Product Processing
1.Raw Material Inspection & Cutting:
Adopt high-quality carbon steel round bars complying with international industrial standards. Conduct strict incoming inspection to verify chemical composition, mechanical hardness, surface finish and internal structure. Reject raw materials with surface cracks, rust spots and internal inclusions. Cut steel bars into fixed-length blanks according to the required pipe plug diameter, thread specification and overall length, to prepare standard workpieces for cold forging.
2.Cold Forging Forming:
4.Deburring & Pre-Cleaning:
5.Black Oxide Surface Treatment:
6.Final Inspection & Packaging:
2.Cold Forging Forming:
Load the qualified steel blanks into precision cold forging equipment. One-step cold forming shapes the outer profile, external thread blank and internal hexagon socket. Precisely control forging pressure, stroke and forming speed to guarantee full and neat inner hexagonal cavity, dense metal grain structure, without deformation, collapse or cracking on the workpiece.
3.Precision Thread Machining:
Perform thread rolling or CNC turning on forged semi-finished parts. Machine external threads following standard specifications including NPT, BSPP, BSPT and metric threads. Inspect thread tooth profile, pitch, major/minor diameter and tolerance by thread gauges one by one, to ensure smooth thread assembly and reliable sealing performance after tightening.
4.Deburring & Pre-Cleaning:
Remove sharp burrs and flash formed on edges of hexagon socket and thread section after forging and threading. Carry out ultrasonic cleaning to thoroughly wash away metal scraps, forging lubricant and surface contaminants, ensuring a clean and uniform base surface ready for black oxide treatment.
5.Black Oxide Surface Treatment:
Immerse cleaned pipe plugs in professional blackening chemical solution. A uniform, thin black oxide conversion film is formed on carbon steel surface. The black oxide layer offers mild anti-corrosion property and reduces surface friction, delivering a consistent matte black appearance. After blackening, workpieces go through rinsing and full drying to avoid residual liquid stains.
6.Final Inspection & Packaging:
Implement full-range quality inspection, covering dimensional check, thread fit test, inner hexagon wrench compatibility, surface appearance and sealing-related visual inspection. Sort and separate qualified products. Pack finished pipe plugs into moisture-proof bags and export cartons with product specification labels, then transfer to warehouse for 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
声明：此篇为NXF GROUP原创文章，转载请标明出处链接： https://www.nxf-group.com/h-nd-2405.html
Phone
+8613917160311
Whatsapp
Whatsapp
+8613917160311
Wechat
Wechat
Inquiry
Email
info@nxf-group.com
Inquiry
Inquiry