Application
Heavy Machinery
Steel bars for high-load machinery parts, wind, marine, mining, oil equipment, and industrial assemblies.
Matching Logic
Start from the part, then match grade and route.
JOTAIN supports buyers by connecting part application, grade, delivery condition, processing route, inspection requirement, packing, and destination into a practical RFQ path.
Buyer checks
- Load application
- Inspection plan
- Processing route
- Traceability support
Buyer Problem
What buyers normally need to control.
Heavy machinery buyers need grade, load context, toughness route, machining allowance, heat treatment, UT or inspection scope, traceability, and packing reviewed before quotation.
Common materials
- 34CrNiMo6
- 42CrMo4 / 4140
- 35CrMo
Typical processing route
- Confirm machinery application, load context, grade, diameter, length, and quantity.
- Review QT, forged or machined bar route, and mechanical-property target.
- Confirm machining allowance, UT on request, surface checks, and traceability.
- Review certificate format, third-party inspection if required, and packing.
- Confirm destination, bundle plan, and loading constraints.
Inspection and documents
- Mechanical properties and active standard
- UT, third-party inspection, and traceability
- Machining allowance, surface check, packing, and export documents
Application Details
Review the route before quotation.
- Construction machinery
- Review 42CrMo4, 35CrMo, or 34CrNiMo6 according to load, condition, machining, and inspection.
- Mining equipment
- Toughness, fatigue, traceability, UT, and packing can matter for heavy loaded parts.
- Wind, marine, oil, and gas-related components
- Heavy rotating parts and critical machinery components need cautious grade and document review before quotation.
RFQ Checklist
Send the details that affect grade and processing.
- Application and load context
- Grade, standard, diameter, length, and quantity
- Delivery condition and target properties
- Machining allowance, UT, and document scope
- Packing, destination, and inspection timing
Private Factory Processing
Route selection can include JOTAIN factory processing.
Processed through JOTAIN's private factories when project requirements call for heat treatment, peeling, grinding, straightening, chrome plating or cut-to-length preparation.
Factory route check
Confirm whether the application requires heat-treated, peeled, ground, straightened, chrome-plated, or cut-to-length preparation before quotation.
Related Routes
Review grade, processing, and document needs together.
Compare core grade routes before finalising the RFQ.
Match delivery condition, surface route, and downstream manufacturing needs.
State certificate, testing, traceability, and inspection requirements early.
RFQ
Send requirements for heavy machinery.
Include part type, grade or equivalent standard, diameter, length, quantity, delivery condition, processing route, destination port, and certificate requirements.