Grade Selection
Technical Resources
Steel grade and buying resources for industrial buyers.
Practical guides for selecting alloy steel round bars, matching grades to applications, preparing inspection requirements, and sending clearer RFQs for JOTAIN review.
Buyer Path
Choose the guide by the question you need to answer first.
01
Grade and standard
Start with the steel grade question Compare equivalent standards, delivery condition, application fit, and inspection points before the RFQ is fixed. View grade guides 02Part application
Match the material to the actual component Review how rod, shaft, grinding media, flange, or heavy-duty applications affect grade and processing choices. View application guides 03Inspection and RFQ
State the quality requirements clearly Prepare the information buyers usually need for inspection, traceability, documents, packing, and shipment review. View RFQ guide Grade Selection
Compare core grades before locking the RFQ.
3 guides
Grade Selection
Compare core grades before locking the RFQ.
Grade Comparison
40Cr vs 42CrMo steel selection
40Cr and 42CrMo are both alloy structural steel choices, but buyers usually compare them by load level, toughness requirement, heat-treatment target, part size, machining route, and inspection needs. Read GuideGrade Selection
CK45 / 1045 round bar selection
CK45 / C45 / AISI 1045 is a medium carbon steel round bar option for buyers who need practical machinability, balanced strength, and processing flexibility for shafts, gears, bolts, cylinder rods, and general machinery parts. Read Guide Application Matching
Match the steel route to the actual part.
2 guides
Application Matching
Match the steel route to the actual part.
Application Matching
Hydraulic cylinder rod steel selection
Hydraulic rod applications usually need more than a grade name. Buyers should connect steel choice to strength, straightness, surface quality, machinability, delivery condition, and downstream processing such as peeling, polishing, or chrome-plating routes. Read GuideApplication Matching
Grinding rod material selection
Grinding rod buyers usually care about more than purchase price. Material choice, heat-treatment response, hardness, toughness, service stability, and grinding media cost all shape how a rod performs in wear-related applications. Read Guide Inspection Preparation
Prepare inspection details before quotation.
1 guide
Inspection Preparation
Prepare inspection details before quotation.
Inspection Preparation
Steel bar inspection requirements for RFQ
A stronger steel bar RFQ should state the inspection and documentation expectations before quotation. This helps align material sourcing, processing route, mill laboratory checks, third-party inspection support, packing, and export coordination. Read GuideFactory & Quality
When the buying question moves from grade choice to execution.
Use these pages to review processing routes, quality-control coordination, and what to include when the RFQ is ready for supplier review.
Products Core grade pages, equivalents, chemistry notes, and application fit. Open page Applications Steel selection by actual part route and service use. Open page Factory Sourcing, processing, inspection, and shipment coordination. Open page Quality Traceability, documentation, and third-party inspection support. Open page
RFQ Preparation
Ready to send the inquiry?
Include grade, equivalent standard, size, quantity, delivery condition, application, inspection needs, destination, and timing for review.