They don't need to be. :P
That is because they are made to a certain tone or note. This note is determined by its diameter and the thickness of the metal part of the bell. Some small adjustments can be made to the bell after casting or the bell can be hung as cast (a Maiden bell)
The tone (i.e. - the overall sound quality) is determined by all sorts of factors, including where the bell is struck and its composition as well as its nominal tuning. The note of a bell is made up of several overtones or partials and these affect how the bell sounds overall.
The Tubular bells (or Chimes) originated in the 1880s
Tubular Bells III was created on 1998-09-22.
The Orchestral Tubular Bells was created on 1975-08-28.
They sound like church bells
Tubular bells produce by striking to them with a hammer. It can play different notes. Therefore it is a percussion instrument with indefinite pitch.
The Tubular bells (or Chimes) originated in the 1880s
In England
Tubular bells
Orchestral chimes, additionally known as orchestral bells or tubular bells, are a sequence of tuned brass tubes of extraordinary lengths, suspended inside a body through skinny wire or cord. These tubes are struck with mallets to produce a sound.
There are many different styles of wind chimes available on the market. One such popular style is Corinthian bells, which are known for their tubular shape.
From the Tubular bells album by Mike Oldfield
The Best of Tubular Bells was created in 1972.
Tubular Bells was created on 1973-05-25.
Some easy to make musical instruments for kids are tambourines, drums, chimes, horns, cymbals, xylophones, comb buzzers, guitars, tubular bells, and hand bells.
It includes establishments making bells and chimes
Tubular Bells III was created on 1998-09-22.
Tubular Bells II was created on 1992-08-31.