Products Overview
Alloy steel round bars selected by grade, application, and processing route.
Review JOTAIN core grades for hydraulic rods, shafts, fasteners, grinding rods, heavy machinery, and semi-finished processing. Each inquiry is checked against grade standard, diameter, delivery condition, inspection needs, and destination.
Buying Route
Start from the part, then confirm the grade.
Overseas buyers usually need more than a grade name. The route below helps connect the product page to the actual component, delivery condition, and inspection question.
Hydraulic rod routeStrength, straightness, and surface conditionReview grade, peeled or ground condition, straightness, certificate needs, and downstream chrome-plating or machining route.Shaft routeToughness, fatigue resistance, and heat treatmentCompare grade choice, QT condition, diameter range, machining allowance, and inspection requirements.Fastener routeThreadability and controlled strengthPrepare grade standard, condition, size, target mechanical properties, and inspection expectations before quotation.Grinding rod routeWear loss, breakage, and operating dataReview rod size, material route, heat treatment, hardness, toughness, wear profile, inspection, and packing before quotation.
Grade Directory
Core steel grades and how buyers usually qualify them.
Flagship alloy grade42CrMo4 / ASTM 4140Hydraulic rods, shafts, heavy-duty parts42CrMo4 / 4140 / SCM440 / 1.7225Alloy structural steel40CrGears, shafts, bolts40Cr / 41Cr4 / SCr440Medium carbon steelCK45 / C45 / 1045Cylinder rods, machining, general shaftsCK45 / C45 / AISI 1045 / S45CHigh toughness alloy steel34CrNiMo6Heavy shafts, gear shafts, demanding parts34CrNiMo6 / 1.6582 / AISI 4340Cr-Mo pressure grade35CrMoFasteners, pressure parts, shafts35CrMo / 34CrMo4 reference routeWear-oriented steel66Mn4 / 65MnGrinding rods, wear service66Mn4 / 65Mn / SUP6
Before Quotation
Send the practical details that affect material choice and supply route.
If the grade is not fully fixed, include the application and target condition so the material route can be reviewed before quotation.
- Required standard and acceptable cross-reference grades
- Diameter, length, quantity, tolerance, and surface condition
- Delivery condition such as QT, annealed, normalized, peeled, or ground
- Application, drawing, downstream process, and inspection requirements
- Destination, packing expectation, and certificate requirements