Phone/Whatsapp:+8613917160311
Email: info@nxf-group.com
Email: Andrew@nxf-group.com
Email: Alice@nxf-group.com
NXF UNS NO7718/2.4668/NiCr19NbMo/alloy 718 Diameter 15-1200mm Length 1-12m Nickel Alloy 718 Round Bar
Alloy 718 Introduction.
Round Bar Introduction
1. Basic Definition
A round bar, also known as solid round steel, is a long cylindrical solid metal material with a complete circular cross-section. It is different from hollow round pipes. The whole bar body is solid and integrated, with uniform diameter and regular surface. Round bars are manufactured through hot rolling, cold drawing or forging processes, and are widely used as basic mechanical raw materials for structural support, shaft production and mechanical part processing.
2. Common Material Types
Round bars cover a variety of metal materials to adapt to different industrial working conditions. The most widely used types include carbon steel round bars, alloy steel round bars and stainless steel round bars. Carbon steel bars feature low cost and good plasticity for general structural use. Alloy steel bars have higher strength, hardness and wear resistance for heavy-load and high-temperature environments. Stainless steel bars own excellent anti-rust and anti-corrosion performance, suitable for chemical, marine and outdoor equipment applications.
3. Main Application Fields
Round bars are essential base materials for machinery manufacturing and construction engineering. They are mainly used for processing mechanical shafts, pins, bolts, connecting rods, guide rods and structural support parts. In construction and steel structure projects, round bars serve as load-bearing and reinforcing components. They are also commonly applied in automotive parts, mold manufacturing, hydraulic equipment and mechanical repair industries due to their stable physical properties and easy processing performance.
4. Structural and Performance Advantages
Round bars possess outstanding structural stability and mechanical performance. Compared with tubular materials, solid round bars have higher overall density, stronger tensile strength, torsion resistance and bending resistance, and are not easy to deform under heavy load. The circular cross-section ensures uniform force distribution during rotation and bearing, avoiding stress concentration. In addition, round bars feature simple structure, good cutting and welding performance, and high flexibility for secondary processing such as turning, threading and forging.
5. Production and Quality Standard
Round bar production follows strict industrial dimensional and mechanical standards. During manufacturing, the diameter tolerance, straightness, surface smoothness and internal metal texture are precisely controlled. Qualified round bars have no surface cracks, scars, rust pits or internal segregation defects. Before delivery, they are tested for hardness, tensile strength and dimensional accuracy to ensure stable quality and good machinability, meeting the requirements of subsequent cutting, welding, threading and heat treatment processes.
Customer visit to the factory video
Round Bar Produce Processing
1. Raw Material Inspection and Blanking
The production of round bars starts with strict raw material incoming inspection. Operators check the steel grade, chemical composition, surface quality and original dimensional tolerance of the raw steel billets. Raw materials with cracks, inclusions, surface scars and uneven hardness are eliminated. Qualified blanks are cut and blanked according to production specifications, with fixed length controlled accurately to ensure consistent workpiece size for subsequent processing procedures.
2. Hot Rolling or Cold Drawing Forming
This is the core forming process for round bars. According to product requirements, hot rolling or cold drawing technology is adopted. Hot rolling is used for large-diameter round bars, heating the steel billet to high temperature and rolling it repeatedly through professional roller sets to form a uniform circular cross-section. Cold drawing is applied for high-precision small-diameter bars, which improves surface smoothness and dimensional accuracy through room-temperature extrusion and drawing, ensuring regular bar shape and stable internal metal structure.
3. Straightening and Shaping
After forming, round bars are prone to slight bending, distortion and oval deformation during rolling and cooling. The finished bars are sent to precision straightening machines for multi-point calibration. This process corrects the overall straightness, roundness and outer diameter deviation of the bar body. It effectively eliminates structural deflection, ensures the linearity of each round bar, and meets the assembly and force-bearing accuracy requirements of subsequent mechanical processing.
4. End Trimming and Deburring
Qualified shaped round bars undergo end face finishing treatment. Workers cut and polish both ends of the bar to make the end faces flat, smooth and perpendicular to the bar central axis. All sharp burrs, edge residues and rolling flashes on the inner and outer sides of the bar ends are completely removed. This procedure avoids assembly scratches and processing errors, providing qualified blank conditions for later cutting, welding, threading and deep processing.
5. Surface Treatment and Anticorrosion
To improve the service performance and appearance quality of round bars, standardized surface treatment is carried out. The whole bar body is cleaned to remove oxide scale, oil stains and dust on the surface. Conventional carbon steel round bars are coated with anti-rust oil, galvanized or blackened for anti-corrosion protection. Stainless steel round bars are polished and passivated to enhance surface finish and oxidation resistance. This process effectively extends the service life of round bars in various working environments.
6. Precision Inspection and Finished Storage
The final procedure is comprehensive quality inspection and packaging. Inspectors test the round bar’s diameter tolerance, straightness, surface smoothness and mechanical properties including hardness and tensile strength. Internal defects such as material segregation and tiny cracks are detected by non-destructive testing. Unqualified products are reprocessed or scrapped. Qualified round bars are sorted by specifications, protected and bundled, then stored in categories to ensure stable delivery quality.
Our NXF GROUP advantage as follow
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent qualitycertificate 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.
includemetals,machinery, containers, construction materials, mechanical products, electrical systems, and medical
accessories.Establishedin1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolutecustomer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management andCraftsmanship." Our advantage:3S Service(Small Quantity/Short Time/Special Material).
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),South America(10.00%),Eastern Europe(10.00%),Mid East(10.00%),Eastern Asia(10.00%),Southeast Asia(5.00%),Africa(5.00%),Central America(5.00%),Northern Europe(5.00%),North America(5.00%),Domestic Market(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?
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 qualitycertificate system and trademark certificate
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by AlibabaInternational 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 aone-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