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Forms and finishes
Request a perforated stainless tube quote with your drawing, grade, OD, wall, hole pattern and open-area requirement.
Request a quoteTechnical reference
| Field | Order reference |
|---|---|
| Standard | Perforation and fabrication drawing plus parent tube specification |
| Product or route | Round tube with a specified pattern and unperforated areas |
| Critical dimensions and fit | State hole diameter, pitch, layout, blank end bands and seam zone |
| Supply enquiry | Confirm sizes, lengths, route, documentation and lead time for your order |
Examples below assume circular holes on a square pitch. Pattern open area is π × hole diameter² ÷ (4 × pitch²), expressed as a percentage. Solid margins and unperforated seam bands reduce open area over the whole tube.
| Hole diameter (mm) | Pitch (mm) | Pattern open area |
|---|---|---|
| 3 | 5 | 28.3% |
| 4 | 6 | 34.9% |
| 5 | 8 | 30.7% |
Use the drawing or approved assembly design for fit and service. Verify permitted loads or flow requirements and the acceptance criteria for the finished part.
The grade on the purchase line controls chemistry. Specify the grade with the finished product standard or drawing.
| Check | What to match |
|---|---|
| Grade and specification | TP or UNS on the quotation and material report |
| Heat analysis | Full limits and any stabilising or alloy additions under the ordered edition |
Reference ASTM steel standards
Use the ordered grade, delivery condition and product standard to review the actual tensile, yield, elongation or hardness results required by the order.
| Check | What to verify |
|---|---|
| Condition | Heat treatment or cold-work condition stated for the offered form |
| Acceptance | Project-specified dimensions and relevant test records |
Reference ASTM steel standards
Measure burrs, perforated length and orientation from the drawing datum.
| When | What to check |
|---|---|
| Before ordering | Document the required test method, edition and any witness points |
| At delivery | Match the material report and heat or lot identification to the shipment |
Distinguish open area of the pattern from open area over the whole tube.
For the enquiry, state hole diameter, pitch, layout, blank end bands and seam zone.
Perforation and fabrication drawing plus parent tube specification · 3 × 5 mm. Add quantity, lengths, delivery city and the required reports.
Ordering guidance
Specify outside diameter, wall and length before adding the hole requirements. Include hole diameter, pitch, pattern, perforated length and any plain end margins. If open area is critical, give the required value and how it is measured.
Include seam and edge requirements if they affect fit or handling. When a drawing and a written description disagree, identify which controls before asking for price or tolerances.
Check pricing and availability →
Buyer’s guide
Include finished tube OD, wall and length, then state the hole size and shape, pitch, pattern and the exact perforated length. Show any solid margins near the ends and an unperforated band near a seam. If the pattern must align with a bracket or flow direction, give its orientation and datum on the drawing.
If open area is an acceptance value, state whether it applies only within the patterned region or across the full surface including blank ends. Specify burr limits and which side must be clean for an insert, mesh or process stream. If weld seams or perforations cannot cross a particular zone, mark the zone before fabrication begins.
A filter support, vent guard and equipment screen can use similar-looking patterns with very different tolerances. Give the mating dimensions, mounting details and required grade. For a repeat order, share a drawing or sample and clarify whether the supplier is quoting a trial piece or the full batch.
Quote an example as finished OD and wall per drawing, round staggered holes within the marked active length, solid end bands and burr limits on the bore. Attach the developed pattern and quantity.
If pitch, pattern or edge clearance affect flow, strength or fit, give those constraints explicitly alongside the open-area requirement.
Prepare your enquiry
| Item | What to send |
|---|---|
| Product details | OD × wall × length · hole diameter · pitch and pattern · open area · plain ends |
| Delivery | Quantity with units, delivery city and required date if known |
| Acceptance | Required certificates and inspection scope; attach the drawing revision where applicable |
Provide the function, dimensional envelope and any permitted hole size or pattern. Ask for a drawing review before ordering.
Project enquiries
Send your dimensions, quantities and delivery city. Include any inspection or material certificate requirements so they can be quoted against the same line items.
Request a quote → Call +91 99204 92715