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/EN 10025-2/JIS G3101 Diameter M1.6-56 Grade 4.8-12.9 Color Zinc-plated Fasteners Ring Expansion Bolts
2026-10-29 19:36 NXF GROUP
1
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 Color Zinc-plated Fasteners Ring Expansion Bolts Introduction
The A36 Color Zinc-plated Ring Expansion Bolt is a heavy-duty anchoring fastener made of A36 carbon steel with color zinc plating surface treatment. It consists of an eye ring, hex nut, washer, threaded rod and expansion sleeve. When tightening the nut, the expansion sleeve is forced to expand and press tightly against the inner wall of the pre-drilled hole, creating strong mechanical gripping force. The color zinc coating provides reliable rust resistance and corrosion protection for outdoor and humid environments. This ring expansion bolt is designed for overhead suspension, load anchoring and fixed-point hoisting on concrete, masonry and solid stone substrates. It is widely used for installing safety ropes, hanging equipment, signage, sunshades and small lifting fixtures. The eye ring structure facilitates quick connection of ropes, chains and hooks, featuring stable bearing capacity, simple installation and high anchoring security.
A36 Color Zinc-plated Fasteners Ring Expansion Bolts Drawing
A36 Chemical Composition And Mechanical Properties
Factory and Product Pictures
A36 Color Zinc-plated Fasteners Ring Expansion Bolts Product Pictures
A36 PMI spectral testing proves
Video of a customer visiting us
Product processing
A36 Color Zinc-plated Fasteners Ring Expansion Bolts Product Processing
1.Raw Material Inspection:
The base raw material is A36 carbon steel round bar. After incoming delivery, we perform strict material inspection. Spectrometer chemical composition test is carried out to confirm compliance with A36 carbon steel standard; tensile strength and yield strength tests are implemented to verify mechanical load-bearing performance. The bar surface is checked for cracks, folds, rust and pits, and we measure diameter, roundness and straightness. Unqualified raw materials will be marked, isolated and returned to the supplier to prevent mixing into formal production.
2.Saw Cutting & Forming:
3.Thread Machining & Stamping:
4.Assembly Pre-check:
5.Color Zinc Plating Surface Treatment:
6.Final Inspection & Packaging:
2.Saw Cutting & Forming:
The qualified steel bar is cut into fixed-length blanks by band saw with proper forming allowance reserved. One end of the blank is sent to bending equipment for hot bending to form the closed lifting ring; the bending radius and ring opening clearance are strictly controlled to avoid hidden cracks at the bending position. The other end is processed for knurling and slitting for the expansion sleeve structure.
3.Thread Machining & Stamping:
The straight shank section is clamped on threading machine for external thread rolling, which ensures high thread strength and good wear resistance. Then the expansion sleeve slots are cut, and anti-slip knurling patterns are stamped on the outer surface of the expansion sleeve to increase friction with the concrete base. The matching hex nut and flat washer are separately stamped and formed according to drawing specifications.
4.Assembly Pre-check:
Assemble the lifting ring bolt body, flat washer and hex nut preliminarily. Check the rotation flexibility of the nut, confirm no thread jamming or galling. Inspect the expansion slit opening range and knurling completeness, reject workpieces with crack, deformation or incomplete knurl before surface treatment.
5.Color Zinc Plating Surface Treatment:
Put qualified semi-finished assemblies into the electroplating production line. Follow the process: degreasing → pickling rust removal → activation → zinc plating → chromate passivation to form iridescent color zinc coating. Control coating thickness and passivation time strictly to guarantee corrosion resistance and uniform bright color. After plating, rinse thoroughly and bake at low temperature to remove residual liquid and prevent white rust.
6.Final Inspection & Packaging:
Conduct full finished product inspection. Test thread fit, ring bending tensile resistance, expansion sleeve opening function, coating thickness and salt spray performance. Check for plating defects such as blistering, peeling and color unevenness. The qualified ring expansion bolts are sorted, packed into cartons with anti-rust bags. Add desiccant, attach labels marked with material A36, specification, batch number and inspection mark 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-2464.html
Phone
+8613917160311
Whatsapp
Whatsapp
+8613917160311
Wechat
Wechat
Inquiry
Email
info@nxf-group.com
Inquiry
Inquiry