Fitting Types
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The purpose of a fitting is to change the direction or volume of the flow in piping.
Welding Fittings -
These fittings are made from wrought materials and manufactured in both
Seamless and Welded construction.
Seamless - The tubing or pipe is heated to a temperature at which the metal is workable
and is forced over a mandrel into its final shape. The rough fitting is cooled
and machined to apply bevels, then cleaned and marked.
Welded - A plate is cut to size and formed in dies. The two sides are welded together,
X-rayed on the weld and then beveled. Fittings can also be manufactured from
welded pipe in the same manner as seamless.
Screwed Fittings -
These fittings are made in sizes 1/8" through 4" and in pressure ratings of 150 lb. (300 lbs. WOG), 300 lb. (1000 lbs. WOG), 2000, 3000, and 6000 lbs.
The 150 lb. and 300 lb. fittings are made in cast material. The others are of forged material.
Socket Weld Fittings -
This fitting design has a socket or recess for the pipe to slip into. A back weld is applied to hold the pipe in the fitting.
Socket Weld fittings are formed by either the drop forge or upset forging method. They are forged solid and require
complete maching. These fittings can be made of carbon, alloy, or stainless steel and in nickel alloys in 3000, 6000, and 9000 lb. ratings.
The bore or waterway is machined to conform with Schedule 40, 160 and XXH pipe. They are available in the same
shapes and sizes as Screwed Fittings including reducing insert bushings. Special bores may be purchased by agreement.
BPS wishes to thank NASPD for the above information.
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Disclaimer
This information is provided "as is" and BPS makes no warranty
of any kind with respect to the subject matter or accuracy of the
information contained herein. BPS specifically disclaims all
warranties, expressed, implied or otherwise, including without limitation,
all warranties of merchantability and fitness for a particular purpose.
In no event shall BPS be liable for any special, incidental,
indirect or consequential damages of any kind or any damages
whatsoever resulting from loss of use, data, profits, whether or not
advised of the possibility of damage, and on any theory of liability,
arising out of or in connection with the use of the information contained
herein.This publication may include technical inaccuracies or typographical
errors. Changes may be periodically made to the information herein.
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