PIPE FLANGE & FITTINGSPECIFICATIONS

Madhur Mahajan PIPING ENGINEER

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

THANK YOU

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