JOTAIN Special Steel
Application-Ready Alloy Steel Bars from China
Steel bars are the product. Reliable execution is the partnership.
For hydraulic rods, shafts, fasteners, grinding rods, and heavy machinery applications.
Factory Capability
Our Private Processing Factories
JOTAIN operates dedicated private processing factories covering heat treatment, peeling, grinding, chrome plating, straightening, inspection and export-ready preparation.
Core Product Grades
Six grade routes for industrial applications.
Our product structure is organised around the grades and applications industrial buyers most often need to specify.
42CrMo4 / 4140
42CrMo4 / AISI 4140
Quenched and tempered alloy steel round bar for high-load hydraulic, shaft, threaded, and rotating parts.
Hydraulic cylinder rodsShaft barsThreaded components
CK45 / 1045
CK45 / AISI 1045
Medium carbon steel round bar for general shafts, rods, pins, and machined components.
Hydraulic rodsGeneral shaftsMachined components
40Cr
40Cr
Alloy structural steel for shafts, gears, bolts, fasteners, and transmission parts.
Shaft barsFastenersTransmission components
34CrNiMo6
34CrNiMo6
High-toughness alloy steel for heavy-duty shafts, gear shafts, and load-bearing components.
Heavy machineryShaft barsMining and oil equipment
35CrMo
35CrMo
Cr-Mo alloy steel for high-strength fasteners, shafts, pressure-related parts, and industrial components.
FastenersThreaded rodsShafts
65Mn
65Mn
Wear-oriented steel for grinding rods and rod mill applications where hardness and heat-treatment response matter.
Grinding rodsWear applicationsMining and cement processing
Application Focus
Built around the parts buyers actually need to make.
Start from hydraulic rods, shafts, fasteners, grinding rods, and heavy machinery parts, then match grade, condition, processing, inspection, and packing.
Hydraulic Cylinder Rods
Steel bars for piston rods, cylinder rods, and guide rods where strength, straightness, machining, and surface route matter.
Common grade focus: 42CrMo4 / 4140, CK45 / 1045, 40Cr.
Straightness and sizeDelivery conditionSurface preparation
Shaft Bars
Round bars for motor shafts, gear shafts, transmission shafts, and other rotating parts.
Common grade focus: 42CrMo4 / 4140, 40Cr, 34CrNiMo6, CK45 / 1045.
Fatigue resistanceMachinabilityQT condition
Fasteners and Threaded Rods
Bars for bolts, stud bolts, tie rods, threaded rods, and load-bearing threaded components.
Common grade focus: 42CrMo4 / 4140, 35CrMo, 40Cr.
Threading routeMechanical targetSurface treatment
Grinding Rods
Wear-oriented steel rods for rod mills, mining, cement, and other grinding applications.
Common grade focus: 65Mn, 40Cr depending on project.
Rod sizeHardness targetHeat treatment route
Heavy Machinery
Steel bars for high-load machinery parts, wind, marine, mining, oil equipment, and industrial assemblies.
Common grade focus: 34CrNiMo6, 42CrMo4 / 4140, 35CrMo, 40Cr.
Load applicationInspection planProcessing route
Processing Routes
Processing support selected around delivery condition and downstream use.
Depending on project requirements, supply can begin from raw round bars and extend to heat-treated, processed, semi-finished, or application-oriented product forms.
Quenched and tempered, normalized, or annealed delivery routes coordinated according to grade and application.
Surface and dimensional preparation routes for buyers moving into machining, polishing, or assembly.
Cut preparation to help align bar supply with packing, machining, and downstream production flow.
Thread rolling and surface-oriented preparation available depending on project requirements.
Quality & Documents
Quality support should be practical, verifiable, and tied to the order.
Relevant documents and inspection steps can be coordinated according to order requirements, product type, delivery condition, and buyer specification.
Confirm requirement and scope during RFQ so support can be matched to the project.
Confirm requirement and scope during RFQ so support can be matched to the project.
Confirm requirement and scope during RFQ so support can be matched to the project.
Confirm requirement and scope during RFQ so support can be matched to the project.
Confirm requirement and scope during RFQ so support can be matched to the project.
Confirm requirement and scope during RFQ so support can be matched to the project.
Factory & Processing Video
Show buyers the production route without slowing the page.
Factory & Processing
Alloy Steel Bar Production Line | 42CrMo4, 4140, CK45, 34CrNiMo6 | JOTAIN
A production-line overview for buyers reviewing JOTAIN Special Steel processing routes and core grade focus.
What buyers can review
- Bar handling
- Production route overview
- Processing environment
- Core grade focus
42CrMo4 / 4140 | CK45 / 1045 | 34CrNiMo6
Related applicationsHydraulic rods | Shafts | Fasteners | Heavy machinery
RFQ
Send your grade, size, quantity, and application.
Include delivery condition, processing requirement, destination port, testing requirements, and certificate expectations so the supply route can be reviewed clearly.