Rectangular stainless steel tube and pipe is available in dull polished and mirror polished finish, in various diameters, wall thickness and material grade. Rectangular stainless steel tube has a has a shiny and aesthetically pleasing finish and a good resistance to corrosion.
Square Galvanized Mild Steel Welded Tube with a Zinc plated coating that provides a level of corrosion protection while having the ability to be painted or powder coated for aesthetic purposes. The steel tube material is quality assured through our rigorous supplier selection process and is supplied to you in full compliance to BS EN 10305-3/5 Grade E220.

Tube Forming Machinery

The term “tube forming machinery” refers to any and all equipment that contributes to tube forming. In this case, tube forming does not refer to the formation of tubing, which is called tube fabrication, but rather process of altering tubing into complex shapes. Note that a tube is a thin, hollow shape used as a passage to convey gas or fluid or as structural components. A tube is typically cylindrical but can be rectangular or square.Common forming services include cutting, bending, and joining. Other processes performed by tube forming machinery include packing, tube flaring, threading, coining, and nitinol heat setting.

Packing

Packing is a bending process that works by filling, or packing, a tube with material that helps form it. One example of this is ice packing, and another is sand-packing/hot-slab forming.

Ice packing is pretty straightforward. During this process, manufacturers fill a tube with a water solution, freeze it, then bend it. The solution contains properties that make ice flexible. Most often, this technique is used to make trombones.

Sand-packing/hot-slab forming starts when manufacturers fill a tube with fine sand. They continue the process by capping the tube at its ends and place it in a furnace. There, the furnace heats it up to at least 1600℉. Once appropriately heated, the machine or the operator moves the tube on a slab with built-in pins. Here, the manufacturer bends it around the pins using a mechanical force like a crane or a winch. Once the tube has cooled, he or she removes the sand. The sand decreases distortion in the tube’s cross-section.

Tube Flaring

The objective of tube flaring is to form the end of a length of tubing into a funnel shape, or tube flare. This straightforward process is performed by tube end forming machines.

Tube Threading

Next, tube threading is the process by which the end of a tube acquires raised helical ribs, or threads. Tubes may receive external threading or internal threading. Either way, internal threading and external threading are designed to connect to each other and allow separate pieces of tubing to connect as well.

Coining

In the context of tube forming, to coin means to flatten. So, coining is actually a process during which manufacturers flatten the tubing using custom tooling, dies, and power presses.

Nitinol Heat Setting

Finally, nitinol heat setting is a much more specific process than those above. Manufacturers perform it only on nickel titanium, which is a half nickel-half titanium shape-memory alloy, in nitinol heat setting. During this process, the tubing is forced through a die and then bake it at high temperatures. They repeat the baking several times until the shape is heat-set.
Metal C-Profile & Box Channels
Since 2010, BAICHAO has manufactured Metal Profile including C-Profile & Box Channels. We also specialize in Open Seam Tubing including Square Tubing, Square Steel Tubing, Rectangular Tubing, and Rectangular Steel Tubing.

C-profile standard

sheet metal c channel build your own metal u channel define the measurements you need sheet metal channel galvanized sheet metal u channel.

Channels standard size Hot rolled dimensional tolerances and grades according to ASTM A276, ASTM A484, ASTM A479, ASME SA479, MTC EN 10204 3.1
Laser fused according to ASTM A1069, dimensional tolerances and grades, according to ASTM A276, ASTM A484, ASTM A479, ASME SA479, MTC EN 10204 3.1 Stainless steel Standard stainless steel grades 304/L and 316/L ， lengths of 6000 -0/+100 mm

C-profile & Box Channel-Thickness & Length

C Channel & Box Channel thicknesses vary from 0.5mm thick up to 10mm thick. On 1/4 & 1/2 hard aluminum, Aluminum C Channel & Aluminum Box Channel thicknesses can reach up to 6 thick. Many different decorative pre-coated metals are generally not recommended when more than 7.5 thickness is required unless larger than normal corner radii can be used. Some coatings can be used, however, up to 3mm thick such as a pre-finished Hot Dip Galvanized coating. Box Channel & C-Channel Lengths may be from 3 thru 40 feet long with close tolerances. Many different lengths can be put on one purchase order.

C Channels & Box Channels – Differences
C Channels are different than Box-Channels in the manner in which they appear in print, on Drawings, Sketches, and other images. C-Channels are shown with the opening or gap on the side of the image whereas on a Box Channel and Open Seam-Square or Rectangular Tubing, the opening or gap is on the top or bottom side as seen in the image. All of these 3 products are different names for the same part. Our Standard Sizes Chart on this page gives a summary of sizes with existing tooling that is available. The size chart gives dimensions, as they would be on a print with the opening or gap on the top or bottom, not on the side. With the part’s image in this configuration, the sides are considered the legs and the width is considered the web. The flanges on both sides of the opening are considered the returns. Johnson bros has the capacity to manufacture the sides or legs up to 5″ tall and the width can be as wide as 18″ depending on the size of the legs and returns. There is a maximum raw material flat coil width of 19″ that can be used. Inward flanges can also be added to the returns to turn the Box Channel into a Strut Channel or what is also called Framing.