Forms and finishes

Stainless Steel Rectangular Tube

Enquire for rectangular stainless steel tubing by width, height, wall thickness, length and finish.

Technical reference

Specifications and ordering data

Specification

Field	Order reference
Standard	A554 welded mechanical tubing when specified
Product or route	Unequal outside sides with formed corners
Critical dimensions and fit	Mark the reference face, seam position, corner radius and cut tolerance
Supply enquiry	Confirm sizes, lengths, route, documentation and lead time for your order

Dimensions and weight

Drawing examples in millimetres. Enter the corner radius and the tolerances separately. Corner geometry affects clearance and weight.

Outside side A (mm)	Outside side B (mm)	Nominal wall (mm)	Drawing checks
40	20	1.5	Corner radius, seam and cut length
60	30	2	Corner radius, seam and cut length
80	40	3	Corner radius, seam and cut length

Service and pressure basis

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.

Chemical composition

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

Mechanical properties

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

Testing and certificates

Check twist, straightness and face finish where specified.

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

Application and product comparison

Square tube simplifies side orientation but has its own corner clearance.

For the enquiry, mark the reference face, seam position, corner radius and cut tolerance.

Example request for quotation

A554 welded mechanical tubing when specified · 40 × 20 × 1.5 mm. Add quantity, lengths, delivery city and the required reports.

Request a quote

Ordering guidance

Use width × height × wall

Specify the two outside dimensions, wall thickness, length and grade. For a replacement that slides into another section, note the mating dimensions, corner radii and tolerances that affect fit.

State the required finish on visible surfaces and any limits on straightness or twist when they affect fabrication. A width and height alone are not enough for comparable offers.

Check pricing and availability →

Illustration: Square and rectangular hollow sections with perforated tubing

Buyer’s guide

Rectangular stainless tube dimensions and finish for fabrication

Use the orientation shown on the drawing

Specify the long outside side, short outside side, wall and finished length. Mark the orientation when holes, slots or mounting plates reference one face. If the part locates in a fixture, include the permitted side-size tolerance, corner radius and any twist or straightness limits the assembly requires.

Plan visible surfaces before ordering

When a tube will form part of a handrail, enclosure or equipment frame, identify the show faces and finish direction. State the preferred seam position if it affects welding or appearance. Compare finishes against an agreed sample where visual consistency matters across adjoining parts.

Choose the right purchase specification

A554 includes rectangular welded mechanical tube. For a specified structural role, use the grade, properties and specification given by the project. If the shop needs ready-to-assemble cut pieces, agree length tolerance, square cuts, deburring and bundle identification before comparing to full-length offers.

Example enquiry

For a machine guard frame, give a line such as 60 × 30 × 2 mm, grade and finish per drawing, with slots referenced to the 60 mm face. Mark whether the supplier should quote full bars or finished cut lengths.

Can a 60 × 30 section be turned around on the fabrication drawing?

Only if orientation has no effect on holes, fit, loads or finish. Show the reference face when orientation matters.

Technical references ASTM A554 mechanical tubing scope · ASTM steel standards directory

Prepare your enquiry

What to put on the purchase list

Item	What to send
Product details	Outside width × height × wall · length · corner requirement · finish
Delivery	Quantity with units, delivery city and required date if known
Acceptance	Required certificates and inspection scope; attach the drawing revision where applicable

Should width and height be stated even if only one side is critical?

Yes. Include both, and identify the dimension and tolerance that control the fit.

Continue your product search

Back to the Pipe & Tube Product Catalogue

Project enquiries

Request pricing and availability

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