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.
Specify tube material, dimensions and surface requirements for your drawing and application.


OUR APPROACH
Chrome plating is on the outer working surface. A hollow chrome plated tube is different from an internally finished honed cylinder tube.
The result is a written set of requirements for your order — material, dimensions, surface condition and agreed inspection records.
OUR APPROACH
Chrome plating is on the outer working surface. A hollow chrome plated tube is different from an internally finished honed cylinder tube.
The result is a written set of requirements for your order — material, dimensions, surface condition and agreed inspection records.
TECHNICAL REFERENCE
| Parameter | Reference value | Application / confirmation |
|---|---|---|
| Material | E355+SR · EN 10305-1 | Confirm the order requirement with your quotation. |
| Variants | Chrome plated / induction hardened and chrome plated | Select the substrate treatment explicitly. |
| Diameter | 35–160 mm outer diameter | Confirm the order requirement with your quotation. |
| Diameter tolerance | f7 | Confirm the order requirement with your quotation. |
| Chrome thickness | ≥20 | Raw source minima: units are omitted in the coating-thickness column. Confirm the unit before using these values in an order. |
| Chrome-layer hardness | ≥1000 HV0.1 | Chrome coating only. This value does not describe the core or induction hardened layer. |
| Surface roughness | Ra ≤0.10 · Rt ≤1.00 | Raw source Ra/Rt values; the chrome tables omit their unit. Confirm the unit, test method and sampling length. |
| Ovality | ≤ ½ of the diameter tolerance | Confirm the selected diameter tolerance and measurement method. |
| Straightness | ≤0.2 mm/m | Agree measurement length and support conditions. |
| Microcrack density | ≥6000 microcracks/mm² | Catalogue coating characteristic; not a MYLER inspection result. |
| NSS corrosion reference | R10: 250 h · R9: 500 h | Source finish classes only. Test: ISO 9227; evaluation: ISO 10289. Request order-specific test evidence. |
| Length | Confirm for the order | No universal length is stated in the referenced product table. |
| Chemistry — C / Si / Mn | C ≤0.22%; Si ≤0.55%; Mn ≤1.60% | Confirm the order requirement with your quotation. |
| Chemistry — P / S | P ≤0.025%; S ≤0.025% | Confirm the order requirement with your quotation. |
| E355+SR mechanical reference | Rp0.2 ≥450 MPa · Rm ≥580 MPa · A 10% | Source E355+SR row; verify delivery condition, sample direction and applicable tube standard. |
| Induction variant — case depth | Ø35–60: 1.4–2.5 mm; Ø61–80: 2.5–2.7 mm; Ø81–160: 3.2–5.0 mm | Catalogue page 16. Exact diameters in gaps and effective-depth method need confirmation. |
| Induction variant — case hardness | Confirm separately | The chrome plated tube table provides depth, but no case-hardness value. Do not borrow the solid-rod HRC range. |
| Inside diameter / wall thickness | Per drawing | The published outer diameter does not define bore geometry or a pressure rating. |
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.
External chrome surface
03
Specify the outer working surface, wall thickness and any induction treatment separately.
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 and traceability alongside dimensional, roughness, hardness and chrome-thickness checks.
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.
External chrome surface
03
Specify the outer working surface, wall thickness and any induction treatment separately.
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 and traceability alongside dimensional, roughness, hardness and chrome-thickness checks.
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 external chrome 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
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.
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.
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.
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.
Confirm the working surface
Review the surface finish and external chrome requirements. Acceptance limits and the inspection method need to be confirmed against the drawing before an order is agreed.
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.
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.
FREQUENTLY ASKED QUESTIONS
What to confirm before placing your order.
No. HV0.1 coating hardness describes chrome. HRC and case depth describe the treated steel substrate. Use only the values listed for the selected product and variant.
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. HV0.1 coating hardness describes chrome. HRC and case depth describe the treated steel substrate. Use only the values listed for the selected product and variant.
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’sEach chrome plated 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.