Normas
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Fuel Gas PipingCOPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME B 3 L - 2 68
m 0759670
0548052 840 m
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C O D E
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F O R
P R E S S U R E
P I P I N G
Fuel Gas Piping
USAS B31.2 - 1968
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The American Society of Mechanical Engineers
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T H EA M E R I C A NS O C I E T Y
United Engineering Center
OF M E C H A N I C A LE N G I N E E R S
York, N. Y. 1 O01 7
3 4 5 East 47th Street New
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME 8 3 3 . 2 68
0759670 0548053 7 8 7
m
AMERICAN NATIONAL STANDARD
This standard i s one of more than 4000 approved as either a
USA
Standard or as an American Standard. I t became an American National Standard in October 1969 when the Institute changed its name to American National Standards Institute, Inc.
Any part of thisstandardmaybequoted.Creditlinesshouldread: “Extracted from US A StandardCode for PressurePiping,FuelGas Piping,USASB31.2-1968,withthepermissionofthepublisher,The American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, N . Y. 10017.”
Library of Congress Catalog Card Number 72-76015
Copyright @ , 1968, by THE AMERICAN SOCIETY OF MECHANICAL Prmted U.S.A.
ENGINEERS
II
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COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
Foreword
T
HE need for a national code for pressure piping became increasingly evident from 1915 to 1925. To meet this need, the American Engineering Standards Committee (later changed to American Standards Association and then to United States of America Standards Institute) initiated Project B31 in March, 1726, at the request of the American Society of Mechanical Engineers and with that of the wide field involved, Standards ComSociety a s the sole administrative