Material designation
01
State the requested tube material designation and the applicable material standard. Equivalent grades should be reviewed against the drawing and agreed in writing rather than assumed to be interchangeable.
COLD DRAWN
HYDRAULIC TUBE
Specify tube material, dimensions and surface requirements for your drawing and application.
PRODUCT OVERVIEWPRODUCT DETAILSMYLER
PRODUCT OVERVIEWPRODUCT DETAILSMYLER2026
OUR APPROACH
Choose the tube function first: cylinder stock, a blank for subsequent honing/SRB, or hydraulic circuit tubing.
The result is a written set of requirements for your order — material, dimensions, surface condition and agreed inspection records.
OUR APPROACH
Choose the tube function first: cylinder stock, a blank for subsequent honing/SRB, or hydraulic circuit tubing.
The result is a written set of requirements for your order — material, dimensions, surface condition and agreed inspection records.
TECHNICAL REFERENCE
Product specifications.
| Parameter | Reference value | Application / confirmation |
|---|---|---|
| H9 tube — construction | Seamless or welded | Separate construction choices; state the required route. |
| H9 tube — material | E355+C / E355+SR | Source website lists both conditions; confirm the chosen construction and condition. |
| H9 tube — bore tolerance | H9 | Does not establish the surface finish of a finished honed/SRB tube. |
| Cylinder tube — published size notation | [50–40] mm / [270–220] mm | Source OD/ID notation is not explicitly defined. Confirm the actual pair. |
| Ready-to-hone / SRB blank | E355+SR | Further bore finishing is required. Specify machining allowance. |
| Blank — construction standard | Seamless: EN 10305-1 · Welded: EN 10305-2 | Confirm the order requirement with your quotation. |
| Hydraulic circuit tube — material | E235+N / E355+N | Do not apply E355+SR cylinder-tube mechanical properties to this condition. |
| Circuit tube — standard | EN 10305-4 | Confirm the order requirement with your quotation. |
| Circuit tube — published size notation | 4 × 1 to 80 × 12.50 | Confirm OD × wall interpretation, units and available combinations with the quotation. |
| Circuit tube — finish | Oiled / phosphated / galvanized | Separate finish selections in the source catalogue. |
| Straightness / roughness / hardness | Confirm by tube type and condition | No universal values are given for the three distinct tube groups. |
| Length / pressure requirement | Per drawing and order | Do not infer a system pressure rating from these catalogue dimensions. |
WHAT TO SPECIFY
Specify one size or several drawing references. Confirm the material, dimensional tolerances, finish and documentation for each line item before an order is agreed.
Dimensions & tolerances
02
Provide diameter, length and the tolerances that affect fit and assembly. Include any straightness, roundness or related geometric requirements shown on your drawing so the complete dimensional scope can be confirmed.
Supply condition
03
Distinguish H9 cylinder stock, honing blanks and hydraulic circuit tubing. Confirm the condition and finish.
Surface roughness
04
State the required surface roughness and the surface to be measured. If the drawing includes a measurement method, sampling length or acceptance limit, include it with the enquiry for confirmation.
End details
05
Cutting, turning, drilling, tapping, chamfering and end machining can be specified. Include threads, shoulders, holes and the current drawing revision so finished dimensions remain clear.
Inspection documents
06
Request an MTC or EN 10204 3.1 inspection certificate with the inquiry when required. Confirm document scope, material condition and traceability alongside dimensional, roughness, hardness and geometric inspection requirements.
Packing requirements
07
Our standard packing is paper wrapping followed by wooden cases. The paper helps protect rod and tube surfaces from scratches, while the outer wooden case helps guard against knocks during handling and transport. Include any special packing requirements with your inquiry.
WHAT TO SPECIFY
Specify one size or several drawing references. Confirm the material, dimensional tolerances, finish and documentation for each line item before an order is agreed.
Material designation
01
State the requested tube material designation and the applicable material standard. Equivalent grades should be reviewed against the drawing and agreed in writing rather than assumed to be interchangeable.
Dimensions & tolerances
02
Provide diameter, length and the tolerances that affect fit and assembly. Include any straightness, roundness or related geometric requirements shown on your drawing so the complete dimensional scope can be confirmed.
Supply condition
03
Distinguish H9 cylinder stock, honing blanks and hydraulic circuit tubing. Confirm the condition and finish.
Surface roughness
04
State the required surface roughness and the surface to be measured. If the drawing includes a measurement method, sampling length or acceptance limit, include it with the enquiry for confirmation.
End details
05
Cutting, turning, drilling, tapping, chamfering and end machining can be specified. Include threads, shoulders, holes and the current drawing revision so finished dimensions remain clear.
Inspection documents
06
Request an MTC or EN 10204 3.1 inspection certificate with the inquiry when required. Confirm document scope, material condition and traceability alongside dimensional, roughness, hardness and geometric inspection requirements.
Packing requirements
07
Our standard packing is paper wrapping followed by wooden cases. The paper helps protect rod and tube surfaces from scratches, while the outer wooden case helps guard against knocks during handling and transport. Include any special packing requirements with your inquiry.
OUR PROCESS
From drawing review to agreed supply
Each enquiry starts with the drawing and ends with an agreed scope. Material, dimensions, finish and inspection requirements are reviewed together before supply is confirmed.
Step
Drawing review
001
Start with the requirement
Send your drawing, revision, quantity and application. State the requested tube material condition and any requirements that are not shown on the drawing so the enquiry can be reviewed as a complete specification.
Step
Material review
002
Confirm the designation
Review the requested material standard and delivery condition. Where a grade alternative is proposed, its suitability must be checked against the specified requirements and accepted before it replaces the original material.
Step
Dimensions
003
Define the fit
Check diameter, length and all specified tolerances against the drawing. Record straightness, roundness and end details wherever they affect the intended fit or assembly.
Step
Surface review
004
Confirm the working surface
Review the surface finish and tube condition requirements. Acceptance limits and the inspection method need to be confirmed against the drawing before an order is agreed.
Step
Order agreement
005
Put the scope in writing
Confirm the reviewed specification, quantity, documentation and packing requirements. Delivery timing and any remaining technical questions must be resolved in the written order agreement.
Step
Release review
006
Match the agreed records
Review the records required by the order alongside the identification and packing details. Any deviation from the agreed scope requires review before the material is accepted for dispatch.
OUR PROCESS
From drawing review to agreed supply
Each enquiry starts with the drawing and ends with an agreed scope. Material, dimensions, finish and inspection requirements are reviewed together before supply is confirmed.
StepDrawing review
001Start with the requirement
Send your drawing, revision, quantity and application. State the requested tube material condition and any requirements that are not shown on the drawing so the enquiry can be reviewed as a complete specification.
StepMaterial review
002Confirm the designation
Review the requested material standard and delivery condition. Where a grade alternative is proposed, its suitability must be checked against the specified requirements and accepted before it replaces the original material.
StepDimensions
003Define the fit
Check diameter, length and all specified tolerances against the drawing. Record straightness, roundness and end details wherever they affect the intended fit or assembly.
StepSurface review
004Confirm the working surface
Review the surface finish and tube condition requirements. Acceptance limits and the inspection method need to be confirmed against the drawing before an order is agreed.
StepOrder agreement
005Put the scope in writing
Confirm the reviewed specification, quantity, documentation and packing requirements. Delivery timing and any remaining technical questions must be resolved in the written order agreement.
StepRelease review
006Match the agreed records
Review the records required by the order alongside the identification and packing details. Any deviation from the agreed scope requires review before the material is accepted for dispatch.
FREQUENTLY ASKED QUESTIONS
What to confirm before placing your order.
No. H9 cylinder stock, ready-to-hone blanks and hydraulic circuit tubing serve different purposes. A honing blank needs further bore processing; circuit tubing has its own standard and condition.
Send your drawing and required parameters for review. Material, dimensions, surface requirements and acceptance criteria are confirmed in the quotation.
Send the exact product, material, delivery condition, dimensions, quantity and drawing. Specify tolerances, roughness, straightness, hardness, inspection records and any special packing requirements.
A drawing can be used to review the material and dimensional requirements. Include the current revision, applicable standards and any supplementary acceptance criteria so open points can be confirmed before ordering.
List each size or drawing reference as a separate line item with its quantity and required condition. The specification, documentation and delivery requirements for each item can then be reviewed clearly.
Need to confirm another requirement?
View all FAQ’sFREQUENTLY ASKED QUESTIONS
What to confirm before placing your order.
No. H9 cylinder stock, ready-to-hone blanks and hydraulic circuit tubing serve different purposes. A honing blank needs further bore processing; circuit tubing has its own standard and condition.
Send your drawing and required parameters for review. Material, dimensions, surface requirements and acceptance criteria are confirmed in the quotation.
Send the exact product, material, delivery condition, dimensions, quantity and drawing. Specify tolerances, roughness, straightness, hardness, inspection records and any special packing requirements.
A drawing can be used to review the material and dimensional requirements. Include the current revision, applicable standards and any supplementary acceptance criteria so open points can be confirmed before ordering.
List each size or drawing reference as a separate line item with its quantity and required condition. The specification, documentation and delivery requirements for each item can then be reviewed clearly.
Need to confirm another requirement?
Check out complete FAQ’sEvery drawing is different
Every detail matters.
Each cold drawn hydraulic tube enquiry begins with the material, dimensions and working surface required by your drawing.
From there, confirm the inspection, documentation and packing requirements for the order.