Applications
Applications for high-strength heat-treated round bars.
JOTAIN supplies alloy steel round bars for real part applications including hydraulic rods, shafts, threaded components, grinding rods, and heavy-duty industrial parts where strength, toughness, heat treatment, and downstream processing all matter.
Quote Preparation
Send a steel bar requirement for review.
Share the practical details first so material, delivery condition, processing route, inspection needs, and destination can be reviewed together.
- Grade or equivalent standard
- Diameter, length, and quantity
- Delivery condition and surface condition
- Application, inspection requirements, and destination
Buyer Details
Key supply details before quotation.
Review the main grade, application, processing, and inspection points first. Open the detailed notes only when deeper context is useful.
Typical applications
Hydraulic rods, shafts, threaded parts, grinding rods, and fastener materials
Supported by grades such as 42CrMo4, 40Cr, CK45 / 1045, 34CrNiMo6, 35CrMo, and 65Mn.
Supply Scope
Support available from raw bar to application-oriented product.
Depending on project requirements, JOTAIN can support supply at different stages, from raw round bars and heat-treated bars to semi-finished processed bars and mature application-oriented products.
Stage 01
Raw material round bars
Hot rolled or forged bar supply selected around grade, size, and the next machining route.
Stage 02
Heat-treated bars
Bars delivered in quenched and tempered or other matched conditions according to performance target.
Stage 03
Peeled or processed semi-finished bars
Improved surface condition and intermediate preparation for buyers moving directly into machining.
Stage 04
Bars prepared for finishing
Materials prepared for machining, threading, plating, grinding, or further surface treatment.
Detailed source notes 54 more points
Stage 05
Mature application products
Processed products or matching components supplied around actual application needs and part route.
Application Pages
Six practical routes built around real parts and downstream processing.
Each application page summarizes the technical points buyers usually review first, including suitable grades, delivery conditions, supply scope, processing support, inspection focus, and inquiry direction.
01 Hydraulic
Hydraulic Rods & Cylinder Components
Steel bars for piston rods, cylinder rods, guide rods, and related linear-motion parts requiring strength, straightness, surface quality, and reliable machining performance.
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02 Shafts
Shaft Bars & Rotating Parts
Round bars for motor shafts, transmission shafts, gear shafts, and rotating components where strength, toughness, fatigue resistance, and delivery condition matter together.
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03 Threaded
Tension Bars, Tie Rods & Threaded Components
High-strength round bars for threaded tension bars, tie rods, and load-bearing threaded parts used in structural, marine, and industrial applications.
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04 Grinding
Grinding Rods & Wear Applications
Heat-treated steel rods for rod mill grinding and wear-related service conditions where material consistency, toughness, and operating stability affect cost per ton.
Open Page
05 Fasteners
Fastener Bars & Bolt Materials
Round bars and semi-finished materials for bolts, stud bolts, and threaded fasteners requiring controlled strength, threadability, and support for finishing routes.
Open Page
06 Heavy Duty
Wind Power, Marine & Heavy Machinery
Performance-oriented round bar supply for shafts, fasteners, tie rods, and mechanical components used in high-load sectors where fatigue and delivery reliability are critical.
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Selection Guide
Different grades for different applications and processing routes.
Use the product landing page and individual grade pages to match chemistry, strength, hardenability, machinability, wear intent, and delivery condition to your actual part design and downstream processing route.
42CrMo4 / 4140
Preferred for high-strength shafts, hydraulic rods, threaded components, and demanding rotating parts requiring quenched and tempered performance.
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40Cr
A versatile alloy structural steel for shafts, gears, bolts, and transmission parts where balanced strength and machinability are needed.
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CK45 / 1045
A practical choice for cylinder rods, general shafts, and medium-duty mechanical components where machinability and processing flexibility are important.
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34CrNiMo6
Suitable for heavy-duty shafts and load-bearing components requiring higher toughness, fatigue resistance, and hardenability.
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35CrMo
Commonly used for high-strength fasteners, shafts, pressure-related parts, and industrial components requiring heat-treatment support.
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65Mn
Commonly used for grinding rods, wear-related rod products, and applications where hardness and heat-treatment response are important.
View Grade
Application Matching
Need help matching your part route to the right grade and delivery condition?
Send us the part type, dimensions, target performance, downstream processing route, and destination. We will help you align the material, delivery condition, and supply stage.