Tube & Structural Tube
Round, square and rectangular tube in steel, aluminum and stainless.
Also searched as: square tuberound tubedom tubestructural tubebox section
-
Copper Round Tube Pipe Capillary
Length: 100-1000 mmOuter Diameter: 2-20 mm
-
DOM ASTM A513/5 Tube
Inside Diameter: 1.25 inLength: 3 ftOutside Diameter: 1.75 inWall Thickness: 0.250 in
-
DOM CDS St52-3 BK+S Seamless Honed Tube
Thickness: 0.5-5 mm
-
DOM Carbon Steel Round Tube
Gauge: 18Inside Diameter: 0.277 inLength: 10 ftOutside Diameter: 0.375 inWall Thickness: 0.049 in
-
DOM Carbon Steel Round Tube
Gauge: 1/4Inside Diameter: 4.5 inLength: 10 ftOutside Diameter: 5 inWall Thickness: 0.250 in
-
DOM Carbon Steel Round Tube
Gauge: 16Inside Diameter: 0.745 inLength: 10 ftOutside Diameter: 0.875 inWall Thickness: 0.065 in
-
DOM Carbon Steel Round Tube
Gauge: 1/4Inside Diameter: 7.5 inLength: 10 ftOutside Diameter: 8 inWall Thickness: 0.250 in
-
DOM Carbon Steel Round Tube
Gauge: 1/4Inside Diameter: 4.25 inLength: 10 ftOutside Diameter: 4.75 inWall Thickness: 0.250 in
-
DOM Carbon Steel Round Tube
Gauge: 1/4Inside Diameter: 8.5 inLength: 10 ftOutside Diameter: 9 inWall Thickness: 0.250 in
-
DOM Carbon Steel Round Tube
Gauge: 16Inside Diameter: 1.12 inLength: 10 ftOutside Diameter: 1.25 inWall Thickness: 0.065 in
-
DOM Carbon Steel Round Tube
Gauge: 1/4Inside Diameter: 1.75 inLength: 10 ftOutside Diameter: 2.25 inWall Thickness: 0.25 in
-
DOM Mild Steel Round Tube
Length: 12 inOutside Diameter: 1 inShape: RoundWall Thickness: 0.120 in
-
DOM Seamless Round Tube, Mild Steel, 2" OD x 1/4" Wall, 1-1/2" ID
Inside Diameter: 1.5 inOutside Diameter: 2 inShape: RoundWall Thickness: 0.25 in
-
DOM Steel Round Tube
Length: 24 inOutside Diameter: 1.25 inShape: RoundWall Thickness: 0.065 in
-
DOM Steel Round Tube
Length: 12 inOutside Diameter: 2.5 inShape: RoundWall Thickness: 0.065 in
-
DOM Steel Round Tube
Inside Diameter: 0.435 inLength: 6 ftOutside Diameter: 0.625 inShape: RoundWall Thickness: 0.095 in
-
DOM Steel Round Tube
Length: 5 inOutside Diameter: 3 inShape: RoundWall Thickness: 0.5 in
-
DOM Steel Round Tube
Inside Diameter: 0.745 inLength: 3 ftOutside Diameter: 0.875 inShape: RoundWall Thickness: 0.065 in
-
DOM Steel Seamless Round Tube
Inside Diameter: 2.5 inLength: 72 inOutside Diameter: 3 inSeamless: TrueWall Thickness: 0.25 in
-
DOM Steel Tube
Length: 12 inOutside Diameter: 2.125 inWall Thickness: 0.25 in
-
DOM Steel Tube 0.875in OD, 0.065in Wall, 0.745in ID, 7in Length
Inside Diameter: 0.745 inLength: 7 inOutside Diameter: 0.875 inWall Thickness: 0.065 in
-
DOM Steel Tube 0.937in OD, 0.109in Wall, 0.719in ID, 30in Length
Inside Diameter: 0.719 inLength: 30 inOutside Diameter: 0.937 inWall Thickness: 0.109 in
-
DOM Steel Tube 1.063in OD, 0.156in Wall, 0.751in ID, 30in Length
Inside Diameter: 0.751 inLength: 30 inOutside Diameter: 1.063 inWall Thickness: 0.156 in
-
DOM Steel Tube 1.563in OD, 0.375in Wall, 0.813in ID, 36in Length
Inside Diameter: 0.813 inLength: 36 inOutside Diameter: 1.563 inWall Thickness: 0.375 in
-
DOM Steel Tube 1.875in OD, 0.250in Wall, 1.375in ID, 48in Length
Inside Diameter: 1.375 inLength: 48 inOutside Diameter: 1.875 inWall Thickness: 0.250 in
-
DOM Steel Tube, 1.25" OD x 1/4" Wall
Nominal Wall Thickness: 0.25 inOutside Diameter: 1.25 in
-
DOM Steel Tube, Seamless, Mild, 1.00" OD x .065" Wall
Nominal Wall Thickness: 0.065 inOutside Diameter: 0.75 in
-
-
Double Tube Clamp
Pipe Size: 0.75 in
-
Drawn Over Mandrel (DOM) Tube, 1-1/4" OD x .188" WALL
Length: 60 inOutside Diameter: 1.25 inWall Thickness: 0.188 in
-
-
Electric Metallic Tube (EMT) Conduit
Diameter: 2 inchLength: 10 ft
-
Extended Tube Insert
Pipe Size: 2 inTensile Strength: 32510 lb
-
Extruded Aluminum Structural Tube with Tight Tolerance
Tolerance: Tight
-
F-50 Centre Trunnion Mounting Kit for 50mm Round Tube Cylinders
Bore Size: 50.00mmCylinder Type: ISO 15552Style: TrunnionType: Mounting Kit
-
FRP Round Tube
Shape: Round
from $0.50Made-in-China $0.50
About tube & structural tube
Tube and structural tube are hollow profiles utilized in construction, mechanical assemblies, and architectural applications for their strength-to-weight ratio and rigidity. This category encompasses round, square, and rectangular cross-sections, primarily manufactured from steel (including mild steel, DOM, and various alloys), aluminum (e.g., 6061-T6, 6063-T5), and stainless steel (e.g., 304, 316). Key selection parameters include outside diameter (OD) or side dimensions, wall thickness (gauge), and overall length. Steel tubing often conforms to standards such as ASTM A500 for cold-formed welded and seamless carbon steel structural tubing, or ASTM A513 for electric-resistance-welded carbon and alloy steel mechanical tubing. Aluminum tubing frequently adheres to ASTM B221 or B429. Surface finishes vary from mill finish to galvanized, painted, or anodized, depending on corrosion resistance and aesthetic requirements. DOM (Drawn Over Mandrel) tubing is characterized by its superior concentricity, dimensional accuracy, and smooth internal and external surfaces, making it suitable for hydraulic cylinders and precision shafts. Structural tube, often referred to as box section, is designed for load-bearing applications where high strength and torsional rigidity are critical.
How to choose
Selecting the appropriate tube begins with defining the application's structural requirements. First, determine the necessary cross-sectional shape: round for fluid transfer or aesthetics, square/rectangular for structural framing and torsional rigidity. Second, specify the material based on strength, weight, and environmental exposure; steel offers high strength, aluminum provides a lighter alternative, and stainless steel ensures corrosion resistance. Third, calculate the required outer dimensions (OD for round, side length for square/rectangular) and wall thickness to meet load-bearing and deflection criteria. Thicker walls increase strength but also weight and cost. Finally, consider the manufacturing process (e.g., seamless for pressure, DOM for precision) and any required surface finishes for environmental protection or appearance.