very useful ppt regarding pipe fittings

1. PIPE
FLANGE & FITTING
SPECIFICATIONS
Madhur Mahajan
PIPING ENGINEER

2. ALL METAL PIPE IS TO BE MADE OF A LONG HOLE, SURROUNDED BY
METAL CONCENTRIC WITH THE HOLE.
ALL PIPE IS TO BE HOLLOW THROUGHOUT ENTIRE *LENGTH.
*LENGTH – ie. JOINTS TO BE 21 FEET LONG.
ALL METAL PIPE IS TO BE OF VERY BEST QUALITY METAL, PERFECTLY
TUBULAR OR PIPULAR.
ALL ACID PROOF METAL PIPE IS TO BE MADE OF ACID PROOF METAL.
OUTSIDE DIAMETER (O.D.) OF ALL PIPE MUST EXCEED THE INSIDE
DIAMETER (I.D.) OTHERWISE, THE HOLE WILL BE ON THE OUTSIDE.

3. ALL PIPE IS TO BE SUPPLIED WITH NOTHING IN THE HOLE SO THAT WATER,
STEAM OR OTHER STUFF CAN BE PUT INSIDE AT A LATER DATE.
• ALL PIPE IS TO BE SUPPLIED WITHOUT
RUST, AS THIS CAN BE MORE READILY
PUT ON AT JOBSITE.
• ALL PIPE IS TO BE CLEANED FREE OF
ANY COVERING SUCH AS MUD, TAR,
BARNACLES OR ANY FORM OF
MANURE BEFORE PUTTING UP.
OTHERWISE, IT WILL MAKE LUMPS
UNDER THE PAINT.
• ALL PIPE CLOSERS ARE TO BE OPEN ON
ONE END.
• ALL COMPLETED PIPING LINES MUST
GO SOMEWHERE AND CONNECT TO
SOMETHING. THE FITTER IS REQUIRED
TO VERIFY THIS BEFORE TURNOVER.

4. ALL PIPE OVER 500 FOOT LONG MUST HAVE WORDS “LONG PIPE”
CLEARLY PAINTED ON EACH END SO THAT THE FITTER(S) WILL KNOW
THAT IT IS LONG PIPE.
• PIPE OVER TWO MILES LONG
MUST HAVE THESE WORDS
“LONG PIPE” PAINTED IN THE
MIDDLE SO THAT THE FITTER(S)
WILL NOT HAVE TO WALK THE
FULL LENGTH OF PIPE TO
DETERMINE IF IT IS LONG PIPE
OR NOT.
• ALL PIPE OVER 12 INCHES IN
DIAMETER IS TO HAVE THE
WORDS “LARGE PIPE” PAINTED
ON IT, SO THAT THE FITTER(S)
WILL NOT USE IT FOR SMALL
PIPE.

5. ALL METAL PIPEFITTINGS ARE TO BE MADE OF THE
SAME METAL STUFF AS PIPE
• NO FITTINGS ARE TO BE
PUT ON PIPE UNLESS
SPECIFIED. IF YOU DO,
STRAIGHT PIPE BECOMES
CROOKED PIPE.
• FITTINGS COME IN ALL
SORT OF SIZES AND SHAPES.
BE SURE TO SPECIFY THE
DIRECTION YOU ARE GOING
WHEN ORDERING.

6. FITTINGS COME FLANGE BOLTED, BUTT AND SOCKET WELDED
OR SCREWED… ALWAYS USE WELDING WHEN JOINING
WELDED PIPE.
• ALL PIPE WELDS ARE TO BE
CIRCUMNAVIGANT AND
CONTINUOUS.
• ALL CIRCULAR WELDS MUST
HAVE A START AND STOP.

7. FITTINGS COME BOLTED, WELDED OR SCREWED… ALWAYS USE
SCREWED WHEN JOINING SCREWED PIPE.
THEY ARE THE BEST KIND.
• THE SCREWED JOINT (THREADED
MALE AND FEMALE SCREWED
TOGETHER).
• LUBRICANT IS GOOD. PUT IT ON
MALE THREADS ONLY.
• LUBRICANT REDUCES FRICTION.

8. FITTINGS COME BOLTED, WELDED OR SCREWED… ALWAYS
USE SCREWED WHEN JOINING SCREWED PIPE.
THEY ARE THE BEST KIND.
• ALL BOLTS ARE TO BE
SCREWED.
• ALL BOLTS MUST HAVE A
HEAD ON ONE END AND A
NUT ON THE OTHER END.

9. BOLTS WITHOUT HEADS ARE TO BE FURNISHED AS
STUDS.
• ALL STUDS WITHOUT HEADS ARE TO
BE SCREWED ALL OVER AND HAVE
TWO NUTS WHICH IS STANDARD.
• ALL STUDS WITH THREE NUTS ARE
NOT TO BE USED SINCE THEY WOULD
BE ODD.
• ALL NUTS ARE TO BE FURNISHED IN
SACKS. SACKS MUST BE SOUND AND
FREE FROM HOLES AND TEARS.
MINIMUM TWO NUTS PER SACK.
• PAPER SACKS FOR NUTS WILL NOT BE
TOLERATED.

10. FLANGES TO BE USED ON ALL PIPE: FLANGES MUST HAVE
HOLES FOR BOLTS QUITE SEPARATE FROM THE BIG HOLE IN
THE MIDDLE OF FLANGE.
• IF FLANGES ARE TO BE BLANK OR
BLIND, THE BIG HOLE IN THE
MIDDLE MUST BE FILLED WITH
METAL.

11. ALL FLANGES MUST BE CAST OR FORGED OF VERY BEST QUALITY
IRON METAL, CLOSE GRAINED, FREE FROM BLOWHOLES, LUMPS,
CAVITIES, POCKMARKS, PINPRICKS AND WARTS. OTHERWISE WE
CAN’T USE THEM.
• GASKETS ARE TO BE MADE OF
CLOTH, FABRIC, METAL, PAPER,
PLASTIC, RUBBER, OR SOME KIND
OF *“GOOP”. DO NOT USE COW
OR SHEEP MANURE; IT CRACKS
WHEN IT GETS DRY. *“GOOP” – IE.
DOPE TO BE SUPPLIED IN 5
GALLON BUCKETS.
• GASKETS ARE TO USED TO FILL
SPACE BETWEEN FLANGES.

12. ALL PIPING MUST BE INSTALLED WITH VALVES.
• ALL VALVES MUST HAVE AN OPENING ON
EACH END WITH A FLAPPER IN THE MIDDLE
THAT GOES UP AND/OR DOWN, ROUND &
ROUND, OR SIDEWAYS WHEN YOU TURN
THE WHEEL OR CRANK SO THAT IT WILL
OPEN OR CLOSE. OTHERWISE, THE STUFF
WILL OR WILL NOT RUN OUT OF THE HOLE.
• ALL COMPLETED PIPING LINES MUST GO
SOMEWHERE AND CONNECT TO
SOMETHING. THE FITTER IS REQUIRED TO
VERIFY THIS BEFORE TURNOVER.

13. ALL PIPING VALVES ARE TO BE FURNISHED BY THE
KIND REQUIRED AS FOLLOWS:
• ANGLE VALVES HAVE AN ANGLE INSIDE.
• BALL VALVES HAVE A BALL INSIDE. (BALL VALVES ARE
NOT TO BE USED ANYWHERE WITH A FEMALE
CONNECTION)
• BUTTERFLY VALVES HAVE A BUTTERFLY INSIDE.
• CHECK VALVES HAVE A CHECK INSIDE.
• DIAPHRAGM VALVES HAVE A DIAPHRAGM INSIDE.
(DIAPHRAGM VALVES ARE ONLY TO BE USED WITH A
FEMALE CONNECTION)
• GATE VALVES HAVE A GATE INSIDE.
• GLOBE VALVES HAVE A GLOBE INSIDE.
• NEEDLE VALVES HAVE A NEEDLE INSIDE.
• PLUG VALVES HAVE A PLUG INSIDE.

14. THANK YOU
FOR WATCHING