Which of the following is used to hold pipes between ϕ 50 mm and

Which of the following is used to hold pipes between ϕ 50 mm and
| Which of the following is used to hold pipes between ϕ 50 mm and ϕ 150 mm?

A. Chain pipe wrench

B. Footprint wrench

C. Bench Vice

D. Socket wrench

Please scroll down to see the correct answer and solution guide.

Right Answer is: A

SOLUTION

Explanation:

Wrench

A wrench is a tool used for gripping and turning a cylindrical object (such as a pipe) usually by use of two jaws so designed as to grip the pipe when turning in one direction only.

There are following types of wrenches:

 Stillson pipe wrench
  • It is a heavy-duty tool to withstand rough handling and heavy work. 
  • The jaws give an immediate and positive grip.
  • It may be used for all pipes with 15 mm to 50 mm diameters.

 Chain wrench
  • It is used for gripping cylindrical or irregular objects.
  • It is used for pipes with diameters of 50 mm to 150 mm.

 Strap wrench
  • It is used on finished tubular surfaces to avoid marking or damaging.
  • These wrenches have metallic straps by which the surfaces can be tightly gripped.
  Footprint wrench

 
  • It is used for gripping and turning pipes and round stocks in confined places.
  • The required size is adjusted by placing the pivot pin in the different holes of the solid handle.
    The grip is obtained by squeezing both the solid handles together.
  • The selection of holes should be such that the handles are not too far as this may result in the uncomfortable holding of the handle.

 

Bench vice

  • Vices are used for holding the work-pieces. They are available in different types.
  • The vice used for bench work is the bench vice or called Engineer’s vice.
  • A bench vice is made of cast iron or cast steel and it is used to hold work for filing, sawing, threading, and other hand operations. 

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