PA1106 - ASTM A-106 GROOVED END CARBON STEEL PIPING SYSTEMS
The grooved piping system joins together two pipe ends by using a coupling that is seated in grooves at the end of each pipe. When the coupling is assembled, the coupling keys engage the grooves around the circumference of both pipes, providing a secure connection.
There are two types of grooving: roll grooving and cut grooving. Roll grooving uses a special machine that rotates the end of a pipe through a roll set, displacing the metal and forming a groove on the outside surface of the pipe. Roll grooving is limited to use with pipe having a hardness value of HB180 or less. Roll grooving can be accomplished on carbon steel, stainless steel, copper, and aluminum. However, care must be taken to use the proper equipment and roll sets (which may vary with piping material) to create the groove. Consult the grooving machine manual or roll set instructions.
Cut grooving is performed by turning the pipe on a lathe, removing metal from the outside surface of the pipe to create the groove. Cut grooving is intended to be used with Schedule 30 and heavier wall pipe.
- The maximum allowable tolerances for IPS Pipe from square cut ends are:
1 to 3 (DN25 to DN80) 0.030 inch (0,76 mm)
4 to 6 (DN100 to DN150) 0.045 inch (1,14 mm)
8 to 24 (DN200 to DN600) 0.060 inch (1,52 mm)
26 to 42 (DN650 to DN1050) 0.125 inch (3,18 mm)
- Gasket Seating Surface “A” must be free from score marks, ridges, in - dentations, projections, loose paint, scale, dirt chips, grease, and rust that would prevent a positive seal.
- Groove Diameter “C” must be uniform depth around the circumference of the pipe.
- Groove Depth “D” is a reference dimension of the distance from the pipe outer surface to the groove bottom, with regards to groove concentricity about the pipe. This dimension is a reference only. The actual dimension “C” must be maintained.
- Minimum Wall Thickness “T” is the minimum pipe wall thickness that should be roll or cut grooved.
- Maximum allowable pipe end flare diameter is measured at the pipe end diameter. (Roll Grooved Pipe only)
Process and steam piping installed based on using A-53 carbon steel pipe, from 26" to 48" , cost does not include fittings, valves, support devices or erection joint buttwelds, which must be added.All field fabricated and erected. FOB Prices (USD):
- The pipe prices are for plain end pipe. For threaded and coupled pipe add 30%.
- The prices do not include fittings, valves or support devices also pipe coating and wrapping which must be added
- For MH Installation It is assumed “OSBL outside a building-man-hours installation”.
- For ISBL add 120% on Mhrs. values.
- For work inside a multistory building with a maximum floor to ceiling height over 12'0" to 20'0", add 20% to the Manhours shown.
- For work inside an industrial building with unlimited ceiling heights and the piping being installed at various floor and platform levels, add 125% to the Manhours shown for work inside a multistory building.
- For piping in an open trench Inside Battery Limits of a Process Area installed during foundation construction and before erection of Process Equipment, deduct 50% from Manhours below.
Cost Reference in USD 2Q 2017 - USGC
MH/m 1 - INSIDE TUNNEL
MH/m 2 - ON PIPE RACK
MH/m 3 - UNDER SLAB ON GRADE
MH/m 4 - ON SLEEPERS
MH/m 5 - OPEN TRENCH
ASTM A-106 GROOVED END CARBON STEEL PIPING COST ESTIMATION APP
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