Industrial steel solutions
JOTAIN supplies 42CrMo4 / 4140, 40Cr, CK45 / 1045, 34CrNiMo6, 35CrMo, and 65Mn alloy steel round bars in 20–400 mm diameters and 3–12 m lengths. JOTAIN handles downstream heat treatment and bar processing on its own lines, with upstream steel supply supported through JOTAIN's equity-backed mill relationships.
Application context helps guide material and processing decisions.
Application context helps define the review route; it is not customer or project evidence.
Grade references guide the RFQ review; final equivalency and delivery condition remain order specific.
JOTAIN-owned processing · Equity-backed mill supply
JOTAIN owns and operates the heat-treatment and steel-bar processing lines shown here. Its upstream supply network includes equity interests of 45% and 49.5% in two mill partners, alongside strategic mill relationships. The applicable mill, material origin, grade, processing, inspection, and delivery route are confirmed per order.
Alloy steel and processed steel supply for global industry.
Equity-backed production and material-route coordination.
Expanded sourcing and route review for buyer-specific steel requirements.
Heat treatment, bar processing, inspection records, packing, and export preparation.
Processed on JOTAIN-owned linesProduct families
JOTAIN owns and operates the heat-treatment and steel-bar processing lines shown here.
Depending on the order, our factory can handle Q&T, peeling or turning, centerless grinding, straightening, sawing, chamfering, and bar preparation. Grade, size, surface, tolerance, testing, and documents are confirmed during RFQ.
For general stock-removal and machining routes.
Straightening · sawing or cut to length · bar preparation
42CrMo4 / 4140 · 40Cr · CK45 / 1045 · 34CrNiMo6 · 35CrMo · 65Mn
For drawings specifying Q&T condition or mechanical properties.
Q&T heat treatment · straightening · sawing or cut to length
4140 QT · 42CrMo4 QT · 40CrNiMoA QT · 40Cr QT
For tighter surface finish, straightness, or diameter control.
Q&T if required · centerless grinding · straightening · cut to length
UC2 / S3100 · 1045 · 40Cr · 42CrMo4 · 4140
For scale removal with a defined machining allowance.
Q&T if required · peeling or turning · straightening · cut to length
1045 · 40Cr · 42CrMo4 · 4140 · 65Mn
JOTAIN-owned processing · video record refreshed weekly
Seven dated, source-linked videos document day-to-day heat-treatment and steel-bar processing work; this production record is refreshed weekly.
Latest
Public video supports activity evidence; it does not certify material properties, inspection results, or customer orders.
Ownership and route evidence
Each view is labelled by role: JOTAIN-owned processing, order-specific inspection, export preparation, and equity-backed upstream mill production. Order-specific grade, origin, processing, inspection, and packing requirements remain subject to RFQ review.
Heat treatment and downstream steel-bar processing.
Checks and records confirmed during RFQ review.
Bundling, protection, marking, and preparation.
45% · 49.5% equity interests
Technical resources
Use these guides to compare steel, processing, inspection, and purchasing requirements before sending a project enquiry. For application-specific routes, continue togrinding rod steel and heat-treatment guidanceor hydraulic cylinder rod application requirements.
