Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long
Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long

Stainless Steel Square Tube by the Foot, 3 ft to 19.7 ft Long

TBE.SQU.157.3.26M.BLK

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Stainless Steel Square Tube is commonly used as a handrail or top rail for premium modern railing systems. Tubes are available by the foot in pre-cut standard lengths from 3 ft up to 19.7 ft.

  • Dimensions: 1.57" x 1.57" / 40mm x 40mm
  • Wall Thickness: 0.102" / 2.6mm / Gauge 12
  • Approximate Weight: 2.09 lb/ft
  • Material & Finish Options:
    • Satin Finish: AISI 316 Marine-Grade Stainless Steel (Ideal for coastal, pool, and heavy outdoor environments)
    • Black Matte Powder-Coated: AISI 304-Grade Stainless Steel (Optimized for interior or standard inland outdoor environments)

Heavy-duty value: This 40mm x 40mm square tube weighs approximately 2.09 lb/ft. While some budget handrail sections may appear cheaper per linear foot, many use thinner rectangular profiles and do not clearly publish wall thickness or weight.

Long continuous lengths: Available up to 19.7 ft to reduce visible joints and create a cleaner, more solid railing installation compared with shorter handrail sections that require splices.

Joining option: Multiple tube sections can be joined together using our Stainless Steel Flush Angle Square 180 Degree Connector. This allows longer handrail or top rail runs to be assembled from shorter sections when needed.

This heavy-duty stainless steel square tube can be used for a variety of applications, including:

  • Hand railing
  • Top rail for cable railing or glass railing systems
  • Foot rail / bar railing
  • Queue railing
  • Pony rail mounted on top of a wall
  • Bathroom vanities
  • Shelving systems

Shipping Note: Lengths over 8 ft must be shipped by LTL freight.

When shipped by LTL, shorter pieces may be combined with longer pieces in the same crate. For example, if an order includes a 12 ft piece and a 7 ft piece, we may ship them together in one 19.7 ft wooden crate by LTL freight.

Standard vs. Custom Cuts: All lengths listed in the dropdown menu are standard pre-cut sizes; the pricing covers all handling and cuts with no extra fees. If your project requires an exact custom cut (e.g., exactly 6 ft 4 in), a custom setup fee will apply to cover labor and material waste. Please contact Sales at (425) 405-4405 for custom cut orders and shipping quotes.

Explore our range of modern railing systems including cable railing systems, glass railing systems, and stainless steel railings — perfect for indoor and outdoor applications.

These directions will assist the user in properly cutting Premium-grade stainless steel tubes.

Inline Design recommends using a cold saw,band saw, preferably oil-fed. These saws will leave minimal burr and no heat marks. For round tubing, use 65S Premium-grade stainless steel Pipe Cutters.

For demonstration purposes, Inline Design is providing directions based on the use of the cut-off saw.

Caution: Wear protective AISI-approved safety glasses, work gloves, and masks all the time.

Tools Required

  1. Cut-off saw
  2. Duct tape
  3. Abrasive disk/blade
  4. Paper towel
  5. Disk sander
  6. Inner/outer reamer tool*

Instructions

  1. Place duct tape on the clamp of the cut-off saw and to all other areas where the tube will touch the metal to protect the surface from getting scratched while being cut
  2. Mark cutting point, clamp the tubing in place, and commence the cut
  3. Immerse the cut end into water to cool the cut tube
  4. File any sharp edges evenly with a fine metal file
  5. Clean the tube using a paper towel and some household cleaner
  6. Note: if necessary, ream/deburr the outside and inside of the tube. Be careful not to scratch the tubing while deburring; keep the deburr tool straight
  7. To polish the cut, follow instructions formaintaining Premium-grade stainless steel surface

NOTE:A small amount of surface corrosion is not uncommon after exposure to weather or salty conditions. We recommend using ourpassivation solutionto prevent any surface corrosion from happening; more information is available on ourEngineering Specifications Page.

Downloads

PDF Instructions

 

Explore our range of modern railing systems including cable railing systems, glass railing systems, and stainless steel railings — perfect for indoor and outdoor applications.

Overview

This document contains the comprehensive information for how to drill and tap holes for brackets use or handrail brackets

Caution:Wear protective AISI approved safety glasses, working gloves and breathing mask at all times • Inspect before installation or use; do not use if parts are loose or damaged

Tools Required

    1. Center Punch
    2. Hand drill
    3. Cobalt Drill bit
    4. Tap bit
    5. Cutting oil
    6. Marker Pen

Guide Bit and Tab Guide

Bracket/Screw Drill Size AISI Size Tap Size
Pyramid 4mm 5/32" M5 x 0.8
Cone 4mm 5/32" M5 x 0.8
HBWA.005 4mm 5/32" M5 x 0.8
HBWA.006 5mm 3/16" M6 x 1.0
HBWA.008 4mm 5/32" M5 x 0.8
HBWA.009 5mm 3/16"
M6x1.0
HBWA.010 4mm 5/32" M5 x 0.8
HBWA.011 4mm 5/32" M5 x 0.8
HBWA.012 4mm 5/32" M5 x 0.8
HBWA.013 4mm 5/32" M5 x 0.8
HBWA.014 4mm 5/32" M5 x 0.8
HBWA.015 4mm 5/32" M5 x 0.8
HBWA.016 4mm 5/32" M5 x 0.8
M8 6.9mm 17/64" M8 x 1.25

Instructions

  1. Mount the posts to the floor or the brackets to the wall before installing the handrail tube. Please referto other instructions document found on our website for help in that operation
  2. Place the handrail tubing on the saddles. Mark the drilling points using a marker
  3. It’s very important not to skip this point otherwise the drill bit will skid. Remove the handrail then place it on a working table. Mark the drilling points with acenter punch tool. Repeat this several times in the same locationto give a good guide for the drill bit.
  4. Use the corresponding drill bit size shown in table above.
  5. Apply cutting fluid on the drill bit.
  6. Hold firm but without pressing too hard the hand-drill then gradually apply pressure to drill through the top rail with stopping a couple of times to reapply the cutting fluid. Complete all marked location.
  7. Replace the drill bit with the corresponding tap bit shown in table.
  8. Apply cutting fluid on the tap. Tapping is to be done at a slower speed then drilling. Start at a slow speed then increase the speed once the tap catches a couple of threads.
  9. Reverse the direction of the drill to remove the tap remembering to carefully keep the tap bit straight.

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