A flange is an external or internal rib, or rim (lip), for strength, as the flange of an iron beam or I-beam (or a T-beam); or for a guide, as the flange of a train wheel; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc, or on the lens mount of a camera. Thus a flanged rail is a rail with a flange on one side to keep wheels, etc., from running off. The term "flange" is also used for a kind of tool used to form flanges. By using flanges, pipes can be assembled or disassembled very easily.
  There are many kinds of flanges, such as slip on flange, bind flange, stainless flange, plate flange and so on.
  Although flange generally refers to the actual raised rim or lip of a fitting, many flanged plumbing fittings are themselves known as 'flanges'. Common flanges used in plumbing are the Surrey flange or Danzey flange, York flange, Sussex flange and Essex flange. Surrey and York flanges fit to the top of the hot water tank allowing all the water to be taken without disturbance to the tank. They are often used to ensure an even flow of water to showers. An Essex flange requires a hole to be drilled in the side of the tank.

  Many types of pallet racks are available with different designs to fulfill specific functions or create specific advantages. When deciding on the type of a pallet racking system to use, several basic considerations have to be taken into account:
  1.Desired storage density
  2.Floor space and building height
  3.Placement of building doors and columns
  4.Inventory accessibility
  5.Inventory rotation Item/load size and weight
  6.Optimal storage design
  7.Cost of materials and installation

Anyone who has been in the Military knows how to polish military boots ,what about you? Here is a sure fire way to “spit-shine” your boots.
First of all: Clean the dirt off the boot with a large stiff brush or a cloth.
Secondly: Take the small stiff brush and apply black shoe polish liberally all over the boot.
Step 3: Take the large soft brush and run it over the boot to put a gentle shine on the boot, there is no need to polish it hard at this time.
Step 4: Fill the shoe polish container lid with water.
Step 5: Take an old shirt, one that has been washed and worn several times and is very soft, and dip one small part of one corner in the shoe polish. Rub this on the boot in small circular motions, start on the toe and work in one part at a time.
 Step 6: Dip the same part of the shirt into the water, use just a very little (the spit) and rub it on the same part of the boot that you just rubbed the polish. As you rub, you will notice that the boot is getting shinier. Continue around the boot until it has polish on all parts.
Step 7: Take a clean portion of the same t-shirt; pull it across the toe to buff it. You will have one end in one hand and the other in the other. The more you buff, the shinier it will get. Do the same on the heel and the upper shoe.
 Step 8: Repeat the process on the other boot. Now, you know how to polish your military boots.