JOTAIN defines alloy steel bar testing, heat-number traceability, MTC scope and release documents for each accepted order before production.
Our quality route.
Management systems, laboratory tests within the confirmed scope, and documents tied to each heat support checks from production to shipment.
Systems govern the process. Laboratories produce results. Heat-linked documents complete release.Certificate register
ISO 9001ISO 45001ISO 14001
Process control · Change management · Defect prevention
Applied only through the relevant certificate-holding manufacturing entity, site and certified scope confirmed for the order.Verify holders, scopes & originalsChemistry · Mechanical · Metallography · NDT
Applied only through the named accredited laboratory, current scope and confirmed order route.Review laboratory capability & applicable scopeHeat · Test results · Bundle ID · Shipping documents
View document samplesApplicable entities, sites, certification scopes and originals are available through the verification entry.
Verification entry
CNASLaboratory competence
Before release, we check the laboratory records against the agreed test method, scope and order requirements.
Management system index
Evidence beyond the system
A customs-recognized AEO credential for faster, safer and more predictable cross-border release.
Authorized 2013 · Certificate issued 2015Hold points · Test witnessing · Document review · Final release
Inspection body confirmed per order.
Laboratory & inspection Opening plate
Beyond these three, chemical composition, O/N/H gas analysis, metallography, NDT, dimensions and heat-number traceability complete the order-defined release scope.
Three visible checks. A deeper release system.
Laboratory accessLaboratory views from JOTAIN’s manufacturing network show the equipment behind chemical analysis, sample preparation and O/N/H testing. For each order, JOTAIN matches the facility, method, scope and records to the confirmed production route.
Chemical analysis
Sample preparation
Gas analysis
Gas analysis
Oxygen, nitrogen and hydrogen analysis helps assess steel cleanliness and risks associated with inclusions, embrittlement and hydrogen-related cracking.
Handbook-listed equipment: CS-3000 oxygen / nitrogen / hydrogen analyser.Inspection capability
Material Test Certificate
An ISO 10474 inspection document connects the ordered grade and heat number to recorded chemistry and mechanical results. The accepted order defines the document type and test scope.
Grade + Heat number + Chemistry + Mechanical results
Order requirement → tested heat → released shipment
Example 01
Example 02
Redacted to protect buyer and transaction details. These examples show how chemistry, mechanical properties, heat identity and batch results are carried through a release document. JOTAIN aligns the issuing mill, test basis and final document set to each accepted route.
Before production / Chapter 04
Align the drawing, material route, inspection plan and final document pack before work starts.
RFQ input / Final page
