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Contact JOTAIN

Steel Bars & Component Materials

Steel bars, grinding rods and drawing-led semi-finished materials, selected for the part you make.

Send a Drawing

From round bar to the stage you need

Choose Where JOTAIN Enters Your Process

Supply can begin with raw round bar or continue through heat treatment, surface preparation, semi-finished processing and application-oriented delivery.

  1. 01Raw Round BarHot rolled or forged material selected around grade, size and the next operation.
  2. 02Heat-Treated BarQ&T or another matched condition built around the required mechanical route.
  3. 03Processed Semi-Finished BarPeeled, turned or prepared surface for buyers moving into machining.
  4. 04Prepared for FinishingMaterial prepared for threading, plating, grinding, polishing or further treatment.
  5. 05Application-Oriented SupplySemi-finished or mature component forms supplied around the actual part route.
7 Component Routes. Different Technical Priorities.

7 component routes

7 Component Routes. Different Technical Priorities.

The same alloy steel bar can require a very different route depending on what the customer intends to manufacture.

A steel grade is only one part of the decision. JOTAIN connects the final component with material choice, supplied condition, heat treatment, surface processing, inspection and export delivery.

01Hydraulic Rods & Cylinder Components

Bright finished round bars arranged for hydraulic rod production

Built Around Straightness and Surface

Round bars and processed bars for piston rods, cylinder rods, guide rods and other linear-motion components.

Buyer focus
Strength and buckling route · Straightness · Diameter tolerance
Material routes
CK45 / 104542CrMo4 / 414040CrProject-specific grade
Supply stages
Q&T · Peeled or turned · Ground · Rough-machined or finishing-prepared
Review Hydraulic Rod Route

02Shaft Bars & Rotating Parts

Machined shaft bars with stepped diameters and prepared surfaces

Built Around Load, Toughness and Fatigue

Round bars for motor shafts, transmission shafts, gear shafts, pins, spindles and rotating mechanical parts.

Buyer focus
Load direction · Fatigue exposure · Toughness
Material routes
40Cr42CrMo4 / 414034CrNiMo635CrMoProject-specific route
Supply stages
Hot rolled or forged · Q&T · Peeled or turned · Rough-machined · Ground where relevant
Review Shaft & Pin Route

03Grinding Rods & Wear Applications

Straight grinding rods with marked yellow ends prepared in bundles

Built Around the Mill

JOTAIN supplies heat-treated grinding rods for rod mills, with straightening, fixed-length cutting, inspection, marking and export packing.

Buyer focus
Mill duty · Current rod consumption · Breakage and bending
Material routes
65Mn40CrDefined Cr-Mo route
Supply stages
Q&T · Straightened · Fixed length · Inspected, marked and export packed
Review Grinding Rod Route

04Fastener Bars & Bolt Materials

Long threaded steel rods arranged for fastener and bolt applications

Built Around Strength and Threadability

Round bars and semi-finished materials for bolts, stud bolts, threaded rods and fastener blanks.

Buyer focus
Final load · Strength or hardness target · Thread rolling or thread machining
Material routes
35CrMo42CrMo4 / 414040CrProject-specific route
Supply stages
Q&T · Peeled or prepared bar · Thread-ready material · Semi-finished fastener blank
Review Fastener Bar Route Machined couplers, bolts and studs

05Tension Bars, Tie Rods & Threaded Components

Finished long tension-bar assemblies with formed connection ends

Built Around Tensile Load and the Thread Route

Alloy steel bar and drawing-led semi-finished rods for tie rods, tension-bar components and load-bearing threaded parts.

Buyer focus
Tensile load · Long-bar straightness · Machined or rolled thread route
Material routes
42CrMo4 / 414035CrMo40CrProject-specific route
Supply stages
Heat-treated bar · Thread-ready bar · Semi-finished rod · Machined or rolled thread route · Protective finishing where approved
Review Tie Rod Material Route

06Wind, Marine & Heavy-Duty Components

Long prepared steel bars bundled for heavy-duty project supply

Built Around High Load and Project Control

Application-oriented bars and semi-finished products for shafts, flanges, pins, fasteners, tie rods and mechanical parts in demanding industrial service.

Buyer focus
High load · Fatigue · Toughness
Material routes
42CrMo4 / 414034CrNiMo635CrMo40CrProject-specific route
Supply stages
Hot rolled or forged · Q&T · Peeled or rough-machined · Threaded preparation · Drawing-based semi-finished supply
Review Heavy-Duty Route

07Flat Bars for Components

Flat steel bar stock prepared for component manufacturing

Built Around the Required Section and Part

Flat steel bars for forks, springs, moulds, automotive frames, bearings and other drawing-led component requirements.

Buyer focus
Component category · Specified grade · Width and thickness
Material routes
40CrProject-specific grade
Supply stages
Review during RFQ
Review Flat Bar Categories
Connect the Component to Grade, Process and Application

Connect the component to the complete route

Connect the Component to Grade, Process and Application

Choose a part family, then carry its selected material and supply context into the production worksheet.

Component selector 01—07

Component

Hydraulic Rods & Cylinder Components

Round bars and processed bars for piston rods, cylinder rods, guide rods and other linear-motion components.

Material Routes

Primary Route
CK45 / 1045Common medium-carbon starting route for drawing-led review.
Primary Route
42CrMo4 / 4140Alloy route for higher-strength component requirements.
Alternative Route
40CrAlternative alloy route when the part and condition support it.
Engineering Review
Project-specific gradeConfirm from drawing, load and finishing route.

Related Applications

Supply Stages

Processing

  • Heat treatment
  • Peeling or turning
  • Centerless grinding
  • Rough machining

Inspection

  • MTC and heat traceability
  • Straightness and diameter
  • Surface condition

Explore Component Routes

The Grade Does Not Define the Complete Supply Route

Why start from the component?

The Grade Does Not Define the Complete Supply Route

01

Part Function Changes the Requirement

The same grade can require a different heat-treatment, surface, tolerance and inspection route depending on the component.

02

Supply Stage Changes the Buyer’s Work

Raw bar, Q&T bar, peeled bar, ground bar and semi-finished supply leave very different amounts of processing at the customer’s factory.

03

Inspection Should Follow the Risk

Straightness may lead a hydraulic-rod review; fatigue and UT may lead a shaft review; hardness profile and kg/t may lead a grinding-rod review.

04

One Route Reduces Handoffs

Material, processing, inspection, marking, packing and RFQ context remain connected.

Start from the part. Then confirm the grade.

Component RFQ

Send the Part. Receive a Defined Supply Route.

Send what you know

  • Part number, drawing number and revision
  • Grade, if known
  • Critical dimensions, tolerances and surface finish
  • Quantity for each part
  • Required supply stage and remaining work
  • Destination

What JOTAIN returns

  • Proposed material route
  • Recommended supplied condition
  • Relevant processing scope
  • Inspection and document scope
  • Commercial quotation
  • Route review questions where necessary

Open your email app and attach the current drawing. Include any inspection, first-article and document requirements.