Description
STRUCTURAL & MECHANICAL TUBES / HIMOUNT
EN 10305 Seamless Precision Steel Tube
Precision steel tubes for hydraulic, mechanical, automotive, machining, and high-tolerance fabrication projects. Buyers should confirm tolerance class, straightness, surface condition, delivery condition, and inspection scope.
Product codeHM-PRECISION-002
Product familyPrecision steel tube
ProcessPrecision cold drawn tube
Grade referenceProject-specified precision tube grade
Product Categories
RFQ Checklist
- Standard and grade
- OD/section size
- Wall thickness
- Length and tolerance
- Surface or coating
- Certificate and inspection
Manufacturing & Service
Product Overview
Precision steel tubes for hydraulic, mechanical, automotive, machining, and high-tolerance fabrication projects. Buyers should confirm tolerance class, straightness, surface condition, delivery condition, and inspection scope.
Key Specifications
| Product family | Precision steel tube |
|---|---|
| Primary standard / project reference | EN 10305 |
| Grade / material reference | Project-specified precision tube grade |
| Manufacturing route | Precision cold drawn tube |
| Size range | OD, ID, wall thickness, length, tolerance class, straightness, surface roughness, and delivery condition by EN 10305, DIN reference, SANS reference, or drawing. |
| Order details to confirm | Standard, grade, size, wall thickness, length, tolerance, surface/coating, quantity, inspection scope, and destination port. |
International Model Search Index
Common international standard, grade, size and RFQ phrases buyers use when searching or preparing a steel enquiry.
Standards and grade calls
EN 10305-1 E235E355E420DIN 2391 St37.4St52ASTM A519 10201026 precision tube
Size and order phrases
BKBKWBKSNBK delivery conditionhoned tubeskived tubeOD/ID tolerancehydraulic cylinder tube
Buyer search phrases
EN 10305 E355 precision tubeDIN 2391 ST52 seamless tubecold drawn precision steel tube
Index terms are for RFQ routing and search visibility. Final supply must follow the ordered standard edition, project specification, drawing, MTC and inspection plan.
Common International Models And Size Keywords
| Common standards | EN 10305-1/2/3/4/5/6, DIN 2391 legacy, ASTM A519 comparison |
|---|---|
| Common grade families | E235, E355, E420, St37.4, St52, 1020/1026 comparison |
| Common size keywords | Precision tube, cold drawn tube, honed tube, OD/ID tolerance, BK/BKW/BKS/NBK |
| RFQ confirmation | EN part number, grade, OD/ID/wall, delivery condition, tolerance, surface and MTC |
These common model, grade and size keywords are included to help international buyers route RFQs. They are not automatic equivalents; final supply follows the ordered standard, project specification, MTC and inspection plan.
Common RFQ Model Search Keywords
| Grade model examples | EN 10305-1 E235, E355, E420, DIN 2391 St37.4, St52, ASTM A519 1020, 1026 precision tube |
|---|---|
| Size / order examples | BK, BKW, BKS, NBK delivery condition, honed tube, skived tube, OD/ID tolerance, hydraulic cylinder tube |
| Buyer search phrases | EN 10305 E355 precision tube; DIN 2391 ST52 seamless tube; cold drawn precision steel tube |
These buyer-style keyword examples are for inquiry matching and Google indexing. They should be confirmed against the buyer drawing, ordered standard edition, project specification and MTC before quotation.
International Standard Reference
| Reference | Buyer-facing use |
|---|---|
| EN 10305 | Precision steel tube technical delivery condition reference. |
| DIN 2391 / DIN 2445 | Legacy or project precision tube references. |
| SANS 657-3 | Regional precision tube reference; confirm buyer specification. |
Common Export Specification Examples
| Standard family | Common grade / model | Typical export wording | Search phrase examples |
|---|---|---|---|
| EN 10305 family | E235, E355, E420 | Cold drawn precision tube; BK/BKW/BKS/NBK delivery; OD/ID tolerance | EN 10305 E355 precision tube, cold drawn precision steel tube |
| DIN legacy | DIN 2391 St37.4, St52 | Hydraulic cylinder, honed or skived tube enquiry routing | DIN 2391 ST52 seamless tube, honed tube supplier |
| ASTM mechanical comparison | ASTM A519 1020, 1026 | Confirm tolerance and finish system before quotation | ASTM A519 1026 precision tube |
These examples are practical RFQ and search terms used by international buyers. Final quotation should follow the ordered standard edition, project drawing, mill test certificate and inspection plan.
Comparable International References
| Reference family | How buyers use it | Quotation note |
|---|---|---|
| EN 10305 precision steel tube family | European precision tube reference family for cold-drawn or cold-rolled tubes with tighter dimensions and surface control. | Confirm part number, steel grade, delivery condition, tolerance, and surface. |
| DIN 2391 / DIN 2393 legacy references | Legacy precision tube references still seen in buyer RFQs. | Map carefully to current EN 10305 part and grade. |
| ASTM A519 / SAE mechanical tube references | North American mechanical tubing comparison families. | Material grade and tolerance system must be confirmed before quotation. |
International references are for procurement comparison only. They are not direct substitutions unless the buyer specification, project code, and engineering review approve the change.
Applications
- Hydraulic and pneumatic cylinders
- Automotive and machinery components
- Precision mechanical parts
- Machining stock
- High-tolerance fabrication
Testing And Documentation
- Dimensional and straightness inspection
- Surface and roughness inspection when required
- MTC to ordered standard
- Hardness or mechanical tests when specified
- Eddy current or NDE when ordered
Packing And Delivery
Pipes and tubes can be bundled, capped, strapped, oiled, galvanized, painted, wrapped, labeled, or seaworthy packed according to product type and shipment method.
Inquiry Information
Please send EN 10305 part number, grade, OD, ID or wall thickness, tolerance class, delivery condition, length, quantity, surface requirement, destination port, and certificate or inspection requirements.
