Self-Test D-1.2 Describe the Methods of Manufacture of Piping and Tubing

Complete Self-Test D-1.2 and check your answers.

1. What pipe is manufactured by passing strips of high-temperature metal through rollers until shaped and electrically welded at a seam?
   1. Cast iron
   2. Ductile iron
   3. Stainless steel
   4. Carbon steel
2. What tube or piping is manufactured by forcing a heated billet through a die orifice and over a mandrel?
   1. Brass
   2. Copper
   3. Ductile iron
   4. Cast iron
3. What copper tube is identified by its outside diameter?
   1. Type ACR
   2. Type L
   3. Type K
   4. Type DWV
4. What piping is made from a heated raw pellet material, continuously extruded through an annular die, then cooled into a particular size?
   1. Carbon steel
   2. Plastic
   3. Aluminum
   4. Stainless
5. What piping is manufactured using the (Engel) method?
   1. PEX
   2. ABS
   3. PE
   4. PB
6. What pipe is manufactured using an extruding head that allows air to be inserted in the middle of the pipe?
   1. PEX
   2. ABS
   3. PE
   4. PB
7. What is one of several methods used to manufacture steel pipe?
   1. Extrusion
   2. Mandrel piercing
   3. Electro-resistant weld
   4. Pressure weld
8. What method of manufacturing steel pipe starts with a coiled ribbon of steel plate called a skelp?
   1. Seamless weld
   2. Mandrel piercing
   3. Electro-resistant weld
   4. Pressure weld
9. What pipe is manufactured in sizes from 1/8–26″ diameter and is typically used in construction, oil refining, chemical, and petro-chemical industries where chemical and oxidation are an issue?
   1. PE
   2. Copper
   3. PVC
   4. Seamless steel
10. What pipe is produced in a cupola furnace and uses either casting molds or a centrifugal casting process?
    1. Cast iron soil pipe
    2. PVC pipe
    3. Galvanized iron
    4. Seamless steel

Answer Key: Self-Test D-1.2 is on the next page.