Kam Kiu Aluminum Group Drawn Tube & Seamless Tube Information
What is Drawn Tube ? ¾
An extruded tube brought to final dimension by cold drawing through a die and over a mandrel. This process reduces the cross sectional area of the tube, increases strength and refines the tube surface.
Tube Drawing Diagram
Die
Bench Rod
Mandrel
Tube Draw Die And Mandrel
Tube Drawing Process
Drawn Tube
Die Assembly Front View
Draw Die Die Bearing
Die Mandrel
Drawn Tube
Drawn Tube Products - Bow Rails
Drawn Tube Products - Swaged Tube
Drawn Tube Products - Expanded Tube
Drawn Tube Products - Flared Tube
Drawn Tube Products - Ping Golf
Drawn Tube Products - Anodizing Colors
Swimming Pool Blue
Gold
Black
Drawn Tube End Use Products
Water Wand
Golf Ball Retriever
Nifty Nabber Shovel
Extension Pole
Drawn Tube End Users
Drawn Tube Advantages Vs Extruded Tube
Drawn Tube Advantages Vs Extruded Tube
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Dimensional Tolerances - Because the tube is drawn over a mandrel and through a die, consistent dimensions can be achieved.
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Superior Strength - Coldwork increases tube strength and is stronger that an equivalent extruded tube.
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Attractive Appearance - The drawing process enhances tube cosmetics by producing a bright finish with no weld lines.
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Machining - The drawn tube’s superior strength and hardness characteristics enhance tube machinability. This assures a better machined surface with less gumming.
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Bending - Better dimensional and temper characteristics greatly enhance tube bending operations. Consistent dimensions and temper reduce bender setup time and require less machine adjustments. Tube spring back is enhanced. Precise bends can be obtained.
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Anodizing - The draw process refines the surface of the tube eliminating extrusion die lines and other surface irregularities. This provides a superior finish for bright dip and etch and clear anodizing.
Porthole VS Seamless - Market Look
¾ Porthole drawn tube is suitable for many tube applications - flagpoles, antennas, conveyor rolls, textile spools, orthopedic applications, recreational, marine applications. ¾ Seamless tube is better suited for high stress applications such as hydraulic cylinder tube used in trench shoring devices, photocopiers, bicycle, kicking scooters, etc.
Drawn Tube Shapes ¾ Upon special inquiry, we offer drawn shapes including squares,triangles, and flutes. Square and triangular shapes are not supported by the tube straightening process, therefore straightness is not guaranteed.
Drawn Tube Shapes
TriFlat
Drawn Tube Shapes
Square
Drawn Tube Shapes
Fluted Tube
Tube Fabrication A broad range of value added services are available.
Hydraulic End Forming Cut To Length Deburring Flaring Punching Chamfering Threading Bending
Finishing A broad range of finishes are available.
Bright Dip Clear Bright Dip Gold Black Dip Black Etch & Clear Etch & Gold Etch & Black Swimming Pool Blue 2 Step Organic Black
Certifications
Drawn Tube is certifiable to the following specifications:
Metallurgical Considerations The following table highlights common tube sizes in 6063-T832 that are produced and their minimum bend radius based on a fully tooled radial draw bender. Other considerations may be need on other types of benders.
Tube Bending Considerations Tube Size Minimum Radius .750 X .035 2.000” .750 X .042 1.750” .750 X .049 1.562” .750 X .065 1.312” .875 X .035 2.562” .875 X .042 2.250” .875 X .049 2.000” .875 X .065 2.687” 1.000 X .035 3.250” 1.000 X .042 2.812” 1.000 X .049 2.500” 1.000 X .065 2.125”
Physical Properties Alloy And Temper 1100-0 1100-H14 1100-H16 1100-H18
