â¢ Surname is the family name or the last name of a person, whereas first name is the unique name given to a person at birth, also referred to as his Christian name. â¢ Surname is passed down generations, whereas first names are unique depending upon physical attributes or circumstances at birth of a kid.
PVC pipe is available in a wide range of wall thicknesses and strengths (pipe. stiffness). PVC pipe is routinely perforated (slotted) and used as well screen. This same slotted pipe can also be used for toe drains. Slotting is done at the. factory, and slots are available in a wide range of slot widths and POA.
  RTRP stands for Reinforced Thermosetting Resin Pipe and FRP stands for Fiberglass Reinfoced Plastic Pipe. FRP is a composite material consisting of a thermosetting polym â¦ er, often a type of polyester, reinforced with glass or other fibers.Glass fibers provide strength and stiffness to a composite material.  In fact,the RTR pipe have a m â¦ ore approperiate name as GRE(Glass  Reinforced Epoxy) Pipe, since that uses Epoxy Resin instead of  Polyester.    GRE Pipe have much superior properties than common RTR Pipe,  especially in properties of high pressure resistant.