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STAINLESS STEEL MATERIALS

Stainless Steel Tubes

Round, square and rectangular stainless steel tubes for fabrication and assembly. Compare section dimensions, wall thickness, supply route and inside or outside finish requirements for the part you are making.

Thin-walled round, square and rectangular stainless steel tubes arranged side by side with clearly open hollow ends

PRODUCT RANGE

Sizes, Grades & Finishes

Compare the sizes, grades and finishes below for your product. If you need a different size or have not chosen a grade, send the drawing or requirements you have. Specific combinations are confirmed for your order.

Round Tubes

Outside diameter 6–168 mm; wall thickness 0.5–6 mm

Reference length 6000 mm or cut to requested length.

Delivery: Welded · Seamless / cold-finished requirements by order

Square Tubes

Welded reference: outside side 10–203.2 mm; wall 0.8–8.0 mm.

Cut length to your requirement; include the length and quantity in your enquiry.

Delivery: Welded · Seamless / cold-finished requirements by order

Rectangular Tubes

Welded reference: outside sections 10 × 20 to 101.6 × 203.2 mm; wall 0.8–6.35 mm.

Cut length to your requirement; include the length and quantity in your enquiry.

Delivery: Welded · Seamless / cold-finished requirements by order

Grade Options
201-series304304L316316L321347410904L220523042507
Surface Options
Bright annealed, No.4, Hairline, Mirror, Pickled, 2B, Grit 180 / 320 / 400 by section and wall
View Grades & Finishes by Product Type

Use these details to compare the grade and finish options for each product type. Your enquiry can include sizes or processing requirements beyond the listed ranges.

Round Tubes

Grades
201-series304304L316316L321347410904L220523042507
Finishes and processing
Bright annealed, No.4, Hairline, Mirror, Pickled
Order details
State grade, outside diameter, wall thickness, length, quantity, manufacturing route, weld and inspection requirements.

Square Tubes

Grades
201-series304304L316316L2205
Finishes and processing
Bright annealed, 2B, No.4, Hairline, Mirror, Grit 180 / 320 / 400 by section and wall
Order details
State grade, outside side, wall, length, quantity and manufacturing route. Add tolerances, straightness / twist, corner radius, weld, polishing grit, cut ends, inspection and packaging. ASTM A554 or CNS 5802 may be specified for order review.

The paired welded sizes below relate to 304, 304L, 316 and 316L references. Dimensions for 201-series, 2205 or a seamless / cold-finished route are confirmed separately. Polishing grit is not a roughness value.

Welded tube section and wall-thickness combinations — mm
Outside sectionWall thickness
10 × 10 / 12.7 × 12.70.8, 0.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65
15 × 15 / 18 × 180.8, 0.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65
19 × 19 / 20 × 20 / 22.2 × 22.20.8, 0.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11
25 × 25 / 25.4 × 25.4 / 30 × 300.8, 0.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
31.8 × 31.8 / 35 × 350.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
38.1 × 38.10.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5
40 × 401, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
50 × 50 / 50.8 × 50.81.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5, 6, 6.35
60 × 601.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5
63.5 × 63.5 / 70 × 70 / 75 × 75 / 76.2 × 76.2 / 80 × 801.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5, 6, 6.35
90 × 90 / 100 × 100 / 101.6 × 101.62, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5, 6, 6.35
120 × 1203, 3.05, 4, 4.57, 5, 6, 6.35
150 × 150 / 152.4 × 152.4 / 200 × 200 / 203.2 × 203.23, 3.05, 4, 4.57, 5, 6, 6.35, 8

Rectangular Tubes

Grades
201-series304304L316316L2205
Finishes and processing
Bright annealed, 2B, No.4, Hairline, Mirror, Grit 180 / 320 / 400 by section and wall
Order details
State grade, outside width and height, wall, length, quantity and manufacturing route. Add tolerances, straightness / twist, corner radius, weld, polishing grit, cut ends, inspection and packaging. ASTM A554 or CNS 5802 may be specified for order review.

The paired welded sizes below relate to 304, 304L, 316 and 316L references. Dimensions for 201-series, 2205 or a seamless / cold-finished route are confirmed separately. Polishing grit is not a roughness value.

Welded tube section and wall-thickness combinations — mm
Outside sectionWall thickness
10 × 200.8, 0.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65
12 × 25 / 10 × 30 / 10 × 40 / 10 × 500.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65
15 × 25 / 15 × 30 / 20 × 30 / 20 × 400.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11
19.05 × 38.10.9, 1, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11
22.4 × 28.31, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11
25 × 38 / 25.4 × 38.11, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
30 × 40 / 30 × 50 / 25 × 50 / 25.4 × 50.81, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
30 × 601, 1.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5
25 × 75 / 25.4 × 76.21.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
20 × 60 / 20 × 801.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11
40 × 601.2, 1.25, 1.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05
40 × 80 / 45 × 751.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5
45 × 95 / 50 × 100 / 50.8 × 76.2 / 50.8 × 101.61.5, 1.6, 1.65, 2, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5, 6, 6.35
50 × 150 / 50.8 × 152.4 / 60 × 1202, 2.11, 2.5, 2.77, 3, 3.05, 4, 4.57, 5, 6, 6.35
100 × 150 / 101.6 × 152.4 / 100 × 200 / 101.6 × 203.23, 3.05, 4, 4.57, 5, 6, 6.35
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Detailed Product SpecificationsOptional — add the specifications you have

Select Product Options

Choose the form and grade, or select Need advice. Dimensions and quantity complete your specification; surface, tolerance, packing and performance requirements are optional.

Product Shape
Tube shapeRequired
Material Grade
Dimensions
Quantity

You may enter an estimated quantity. Note this under Additional Requirements.

Quantity unitRequired
Surface and Delivery
Tube constructionOptional
Delivery conditionOptional
Surface, Edge and Packaging RequirementsOptional — add requirements if needed
Surface, Edge and Packaging RequirementsCompare Surface Solutions
Base surface finishOptional
Additional RequirementsOptional — add requirements if needed
Additional Requirements

Describe the final processing condition and the magnetic inspection requirements for your request.

About Non-Magnetic Requirements

YOUR ENQUIRY

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Stainless Steel Tubes

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Supplier processing routes

Tube Processing

Stainless steel tubes are sourced through suppliers. The required cross section, construction method, dimensions and delivery condition define the sourcing and processing route.

PACKING AND ORDER COORDINATION

Packing, Quality & Delivery for Your Order

Material selection, surface protection and delivery need to work together. We review these requirements with your specification so they can be included in the quotation and order.

Packaging and Handling

Tube bundling and end protection should suit the section and finish. We review separation, inside / outside surface protection and crate requirements with your order.

Surface Protection & Packing

Specification and Quality Review

We review the grade, dimensions, tolerances and finish against your drawing or sample reference. Any required tests, inspection records and material documents are included in the order discussion.

Sampling & Quality Control

Identification and Delivery

We coordinate the agreed material and processing requirements with identification, packing-list information and delivery arrangements. Share the destination and any shipping or document requirements your project needs.

PURCHASING DETAILS

Tell Us About the Material You Need

A section drawing can provide the tube dimensions. Add the use, supply route and surface requirements that affect your fabrication or inspection.

  1. Round-tube outside diameter, or square / rectangular external dimensions.

  2. Wall thickness, length, grade and welded or seamless requirement.

  3. Quantity, inside / outside finish, weld, inspection and packing requirements.

Explore Surface Solutions

Explore texture, colour, functional topcoats and protection options for the product form you need.

PURCHASING QUESTIONS

Your Product & Ordering Questions

Which dimensions do you need for my tube?

For round tube, provide outside diameter and wall thickness. For square or rectangular tube, provide the external section dimensions and wall thickness. Add the required length and quantity, and any welded, seamless or cold-finished requirement.

Which grades do the square and rectangular size tables cover?

The paired welded section and wall sizes shown apply to 304, 304L, 316 and 316L. If you need 201-series, 2205, seamless or cold-finished tube, include that requirement so we can review its dimensions and delivery condition separately.

How do I specify a polished tube or weld appearance?

Identify the inside and outside surfaces that matter, then add the weld condition, polishing grit or reference sample and any inspection requirements. If surface roughness is required, specify it separately from the polishing grit.

Can I send a tube drawing instead of entering every dimension?

Yes. Attach your drawing or specification and add any grade, quantity and delivery details you already know. You can discuss the remaining requirements with our team.

General Purchasing FAQ