STKR400 Hollow Section · JIS G 3466 Series
STKR400 Hollow Section
STKR400 only means something once the JIS standard and its edition are attached to it. The standard tells a supplier which shapes and grades are in scope and which tests come with them; your design code is a separate document that governs how the member may be used. Name both on the enquiry, together with the section shape, nominal dimensions with units, delivery condition and the document list the order has to carry.
Price on request · availability, origin and document package confirmed against the live enquiry
Choose the route that fits the requirement
Specify STKR400 Hollow Section around the job
STKR400 Hollow Section is only a useful purchase description when the governing requirement, dimensions, service conditions, testing and document expectations are stated with it. Treat nearby routes as comparisons, not automatic substitutes. Price, stock, origin, certification and delivery timing are confirmed only against the live enquiry. Start with the requirement that decides fit, then provide the missing order inputs.
Governing standard & edition
The designated standard and its edition fix scope, the grade range available, tolerances, testing and ordering requirements. Name the standard and edition exactly — a grade designation is not a specification, and the edition controls the requirements that apply.
Grade designation & project requirement
The grade designation is one input among several, not the whole order. The governing design or project specification can impose requirements beyond the standard, so both are stated explicitly and neither is inferred from the other.
Shape, dimensions & tolerance
Section shape, nominal dimensions with units, wall and the applicable tolerance regime fix the piece. A nominal chart value is not an acceptance tolerance unless the governing document says so.
Condition, service & fabrication
Delivery condition, service environment, toughness or impact-testing needs and the fabrication route are decisions the governing document controls. Order each only where the standard and the service call for it.
Confirm the standard, not the number
Pin the JIS standard and edition to the order
STKR400 means nothing on its own to a mill that works in a different system, so the enquiry has to carry the JIS standard and the edition alongside the designation. Where the project also cites a design code, those are two separate documents doing two separate jobs: the material standard governs what the tube is and what is tested, while the design code governs how it may be used. Name both, and say plainly if the fabricator is working to a size series or tolerance table that your drawing already fixes.
Scope checklist
Settle the STKR400 scope before the enquiry goes out
Work down the three groups that decide what the designation actually commits a supplier to: the standard and its edition, the grade and delivery condition, and the testing and certificate scope. Mark each line confirmed, still open, or genuinely not applicable to your order. Anything left open is carried into the enquiry as a question rather than filled in by assumption, and the tally below shows how close the scope is to being complete.
Group
Governing standard & edition
STKR400 is a designation inside a standard, not a standard on its own. Name which JIS document your contract cites and which edition of it controls the requirements.
Governing JIS standard named exactly
The full standard number your drawing or specification references, spelled out rather than shortened.
Applicable edition stated
JIS documents are revised. The edition your documents cite decides which scope, tolerances and tests apply — leave this open until it is confirmed.
Product form in scope confirmed
Confirm the tube type your order actually is (square, rectangular, hot- or cold-formed) is the form the standard covers.
Group
Grade & condition scope
The grade label fixes which grade line applies; it does not on its own fix the delivered condition or any mechanical value.
Full grade designation used, not a shortened form
Carry the complete designation from the governing document so the offer is priced against the grade line you intend.
Delivery condition specified
State the condition the order requires instead of leaving it to be assumed from the grade name.
Project requirements beyond the standard identified
A project specification can add requirements the standard does not carry. List them separately so they are quoted as their own line.
Group
Testing, evidence & certificate scope
What is tested and what is certified belong to the order and the governing edition, not to the trade label.
Testing / inspection scope stated
Name the tests your order calls for. Impact or toughness testing is ordered only where the standard and the service require it.
Certificate type and issuer expected
Say which certificate your QA file needs and who is expected to issue it, so evidence and supply match.
Traceability basis agreed
Confirm how heat or lot traceability links the certificate to the consignment actually shipped.
Scope tally
9
lines still open of 9
- Confirmed
- 0
- Not established
- 9
- Not applicable
- 0
Why the label alone is not enough: STKR400 tells a supplier which grade line the order cites. It does not, on its own, guarantee a mechanical value, a delivery condition or a testing regime — those follow from the governing standard, its edition and the project specification. Confirm each against the document that actually governs before a number is relied on.
Carry the scope into the RFQNothing entered here is stored or submitted.
Specification gate
Build a checkable enquiry
The STKR400 designation belongs to a Japanese standard with its own symbol system, so the gate starts by fixing the document and edition before the grade name can be read at all. From there it asks for the thickness and shape, nominal dimensions with units, quantity and unit basis, the fabrication method, the inspection scope, the document list and the destination. The summary carries every unresolved input forward rather than closing it.
RFQ summary
Standards, grades, dimensions & condition
Write the specification so offers can be compared
Keep STKR400 distinct from its neighbours: write the exact designation with the standard and edition it belongs to, then the thickness and product form it applies at. Add the shape and nominal dimensions with units, quantity and unit basis, the delivery condition as its own field, the inspection scope, the documents required and the destination. Do not treat a similar-looking Japanese symbol as a substitute without evidence.
Standard, edition & grade designation
The governing standard and its edition fix the scope, the grade range available, tolerances, testing and ordering requirements. Name the standard and edition, and use the complete grade designation rather than a shortened form — the edition controls which requirements apply.
Dimensions, wall & tolerance regime
State the section family, nominal dimensions with units, wall, length or cut requirement and surface requirement together, and name the tolerance regime the governing document references. A nominal chart value is not an acceptance tolerance.
Project requirement over the standard
A governing design or project specification can impose requirements beyond the standard. Both are stated explicitly, and neither is inferred from the other — the grade designation alone is not a complete purchase specification.
Reference before ordering
Confirm a size or weight input before it reaches the RFQ
Use a reference to check scope and terminology, then compare that scope with the project requirement. A reference does not replace the contract documents for the actual order.
| Requirement context | Governing basis | Applies to / limitation | Keep as a separate decision | RFQ field |
|---|---|---|---|---|
| Section ordered to a general-structure tube grade | JIS G 3466 series — applicable edition named | Applies where the governing document specifies this standard. Confirm the edition, grade range, tolerances, testing and ordering requirements against the project requirement — the designation alone does not complete the order. | Delivery condition, tolerance regime, toughness / impact testing | Standard / edition + grade |
| Section ordered to a hot-formed structural route | BS EN 10210 series — applicable edition named | A different scope with its own requirements. Close out every input against the JIS standard you named before anything is priced. Until then, an adjacent designation or a different size series remains a question for your engineer. | Product form, grade, dimensions, fabrication implications | Standard / edition + dimensions |
| Project specification beyond the standard | Governing project specification / code | Where a project specification imposes requirements beyond the standard, those requirements are ordered explicitly and confirmed against the actual supply. | Supplementary requirements, inspection scope, documents | Supplementary requirements |
This table is a decision aid only and carries no mechanical value or numerical technical value. Technical choices are conditional on the selected standard and grade; every dimension, tolerance, condition or test figure is confirmed against the governing standard, its edition and the material certificate before quotation. Price on request.
Documents & inspection
Match documents and inspection to the order
Ask for the documents that match the standard you are ordering to, and say who will receive them. A JIS order is normally evidenced by a certificate issued against the standard and edition cited, showing the results the specification requires. Where the project has added a requirement beyond the standard, that evidence is requested separately — and its availability is confirmed for the actual supply.
- Material certification and traceability for the steel supplied, per consignment
- Chemistry and mechanical test record against the governing standard, edition and grade designation
- Impact / toughness test record only where the standard and order require it
- Dimensional and inspection records where the order requires them
- Condition and surface checks against the agreed route
- Heat / lot traceability to the shipped consignment
- Commercial invoice and packing list
- Shipment / origin documents only where applicable to the consignment
- Customs declaration inputs for the destination
What is evidenced, and what stays order-specific
- Material certification and traceability are requested for the steel supplied, against the governing standard, its edition and the full grade designation — never an assumed certificate.
- Toughness and impact testing are ordered only where the governing standard and the service environment call for them, and the record is named in the enquiry.
- Availability of any certificate or approval is confirmed for the actual supply — not assumed from this page or from a nearby route.
Operating duty
Where operating duty changes the choice
Open an application page when the end use changes the order — a truss node or a corrosive exposure will pull the JIS requirement in a different direction. Where the use makes no difference, stay with the standard pages. A JIS order looks different depending on where the member goes — a covered structural frame and an exposed installation place different demands on the grade and the paperwork.
Columns
Column duty: reconcile shape, nominal dimensions, wall, grade designation and the governing design basis before the enquiry is fixed.
Explore ColumnsMachinery frames
Frame context: check whether connection detailing, service environment, finish, inspection or documentation changes the order.
Explore Machinery framesSolar structures
Solar structure service: confirm the exposure condition, tolerance, condition and testing inputs the governing document expects before the specification is frozen.
Explore Solar structuresGCC markets & destination planning
Plan the GCC destination separately from the steel specification
Keep product compliance separate from destination planning. Confirm consignee/importer details, named port or inland delivery point, Incoterms rule and named place, shipment documents, any permit/conformity steps required for the actual goods, and the party responsible for each action. No country card implies a local office, warehouse or stock position.
United Arab Emirates
Destination & importer inputs
Move from STKR400 Hollow Section selection to the exact UAE procurement route: carry the standard edition, grade, section shape, nominal dimensions, tolerance regime, quantity and destination emirate so the quotation and document set match the import.
United Arab Emirates hollow-section procurement
Saudi Arabia
Project specification & import inputs
Confirm the standard and edition, grade, shape, nominal dimensions, tolerance regime, quantity and required-on-site date so the estimate and logistics stay aligned to the governing project specification.
Saudi Arabia hollow-section procurement
Bahrain
Industrial supply inputs
Coordinate the standard edition, grade, tolerance and inspection requirements, document list and delivery point to the Bahrain requirement so the section and its document set stay aligned.
Bahrain hollow-section procurement
Kuwait
Contractor procurement inputs
Link section selection and any cutting or processing to the fabrication and inspection needs, with the delivery point and Incoterms named place agreed against the requirement.
Kuwait hollow-section procurement
Oman
Port-oriented supply inputs
Confirm the specification, nominal dimensions, quantity, document package, port and Incoterms rule so the Oman quotation and logistics stay aligned to the order.
Oman hollow-section procurement
Qatar
Specification & delivery inputs
State the standard and edition, grade, shape, nominal dimensions, delivery condition, documents and delivery location so the Qatar quotation is fixed on a verified basis.
Qatar hollow-section procurementCommercial inputs
Commercial inputs that remain quotation-dependent
Before a JIS order can be quoted, the supplier needs the standard and edition, the grade, the shape and dimensions with units, the quantity and unit basis, the delivery condition, the required documents, the destination and the named Incoterms place. Any requirement your project adds beyond the standard is quoted as its own line, and freight, availability and timing are confirmed against the live shipment.
Packing
Sections bundled, strapped, tagged and marked by shape, nominal size, wall, grade, heat and lot, matched to the declared route. Packing expectations are confirmed in the enquiry.
Delivery point & schedule
Name the consignee or importer, the port or inland delivery point and the required-on-site date. Timing is checked for the live shipment and stated on the quotation.
Incoterms rule & named place
State the Incoterms rule and the named place so packing, transport and document obligations are explicit, and name the party responsible for each action.
Carry the enquiry into the commercial department
Turn the JIS standard and edition, grade, shape, dimensions, delivery condition, tests, documents, quantity, destination and Incoterms named place into one copyable summary. The commercial department reviews the order against the standard before quoting, so anything the standard does not cover is raised rather than assumed.
Price on request — freight, duty, availability and delivery timing are confirmed with your quotation.
Technical reference
Confirm the source scope, then compare it with the requirement
Use the JIS standard to confirm its published scope — the shapes and grades it covers — and the design code separately for what the member may carry. Neither replaces the contract documents for the actual order.
Japanese Standards Association — JIS G 3466
Published standard scope · reviewed for scope and terminology
JIS G 3466 is the published standard for carbon steel square and rectangular tubes for general structure. Use the edition your contract documents cite to confirm its own published scope and terminology — the tube types it covers, the grade provision it sets and the requirements it places on ordering — then compare that scope with the project requirement for the actual order. JIS editions are revised, so confirm the applicable edition rather than relying on the one shown anywhere else.
What this means for your order: the reference helps fix the questions that must be answered in the RFQ — the standard and edition, the full grade designation, the section shape, the nominal dimensions with units and the tolerance regime. Conformity, certification and commercial outcomes remain separate, verification-dependent steps after the technical product description is complete.
What it does not cover: the reference does not prove Noor Deira Steel inventory, price, certification, local presence or project approval, and it does not replace the contract documents for the actual order. Verify the purchase order and the current licensed edition, because a project specification can impose requirements beyond the standard.
What a complete enquiry improves
A complete enquiry makes three things easier
A JIS enquiry that names its standard, edition and grade gives a supplier something to say yes or no to. That is the practical benefit: fewer offers that turn out to be priced against a different designation, and a clearer record of what was actually ordered if anyone questions it later.
Buyer concern
Specification from a grade designation
Evidence-led answer
Every value is forced against the governing standard and edition, the full grade designation, shape, nominal dimensions, tolerance regime and condition — never assumed from the designation alone.
A section whose basis is an auditable, order-driving input set.
Buyer concern
Automatic substitution between nearby grades
Evidence-led answer
The enquiry keeps the standard, edition, grade, product form, delivery condition, dimensions, tolerance regime and testing as separate decisions, so a nearby grade or standard is only a comparison until the governing requirement accepts it.
A section that matches the governing document rather than a similar-sounding grade line.
Buyer concern
Dimension and tolerance ambiguity
Evidence-led answer
Nominal dimensions with units, the tolerance regime referenced by the governing specification, and any length or cut requirement are carried together.
A section a fabricator can cut, weld and re-check against the governing document.
Buyer concern
Undocumented testing or traceability
Evidence-led answer
Testing, inspection and document needs are named explicitly, with the expected issuer, before any value is quoted — and only where the standard and order require them.
An evidence set that matches the steel actually shipped, not an assumed certificate.
Buyer concern
Quotation gaps and destination surprises
Evidence-led answer
Processing, packing, destination, Incoterms named place, documents and required-on-site date are separate explicit fields, never buried in a price.
A quotation that states delivery and import expectations instead of hiding them.
From requirement to quotation
Every step names its owner, input and open item
Seven steps take a JIS requirement to a delivered consignment, with the standard and its edition fixed at the first and the project's additions separated from the standard's own requirements throughout.
Requirement
Buyer
In: Governing standard and edition, full grade designation, shape, nominal dimensions with units, quantity and unit basis.
Out: Service and governing document defined; route identified.
No standard or edition named.
Next: Name the standard and edition.
Condition & tolerance
Buyer + technical
In: Delivery condition, tolerance regime, length or cut requirement, surface requirement.
Out: Condition and tolerance basis stated.
Condition left implicit.
Next: Fix condition and tolerance inputs.
Tests & documents
Technical / inspection
In: Testing and inspection scope, required document list with expected issuer.
Out: Evidence and document package named.
Documents assumed, not requested.
Next: Confirm the document checklist.
Destination & importer
Buyer + commercial
In: Consignee / importer details, port or inland delivery point, Incoterms rule and named place.
Out: Destination and clearance owner explicit.
Importer or named place not confirmed.
Next: Add importer and named place.
Quotation
Commercial
In: Quantity and unit basis, processing scope, packing, documents and required-on-site date.
Out: Availability, commercial terms and document package confirmed for the live enquiry.
Open items carried into the offer.
Next: Receive the confirmed offer.
Packing & shipping
Supplier / forwarder
In: Strapping, tagging, marking, Incoterms rule, port.
Out: Coordinated to the named delivery point.
Document delay.
Next: Track to the delivery point.
Delivery & follow-up
Commercial
In: Site handover, closed-out documents.
Out: Handed to site with the document set.
Open claims.
Next: Close out.
Review unresolved items before quotation
Standard and edition, the full grade designation, product form, dimensions, condition, testing and document inputs, quantity, destination and commercial terms enter the enquiry together so the specification, the evidence and the delivery terms stay aligned.
Request a QuoteBuyer FAQ
Questions to settle before ordering
What a JIS order has to settle before it can be compared: how the standard is named, what the standard does and does not govern, and how a fabricator's size series fits alongside it.
How should the JIS standard be named on the enquiry?
Does the standard tell me what the member can carry?
What if the fabricator works to a different size series?
What belongs in the RFQ?
Qualified RFQ
Request a qualified STKR400 Hollow Section quotation
Send the governing standard/edition, grade or material route, section shape and dimensions with units, quantity/unit basis, intended service, fabrication or connection notes, tests/inspection, required documents, destination and named delivery place. If an item is still undecided, mark it open rather than guessing. The quotation will confirm availability, commercial terms and the supply-specific document package.
Price on request · availability and commercial terms confirmed against the live enquiry
Related routes worth comparing
Open a related page to resolve one decision
This page covers one JIS designation. To settle which standard governs the order, or where STKR400 sits against the cold-formed and hot-formed European series, use the standard and comparison pages linked here — the structural steel family is offered as context, not as a substitute.
Structural steel products
Structural steel is linked for comparison only. An open profile behaves differently at the connection and is governed by its own standards, so use it to weigh a design choice against a hollow section, not as a substitute for the JIS designation this order cites.
Compare the structural steel form