Additional Coupling Methods for Fibertech Pipes
Fibertech pipes can be joined to each other or to other equipment by various means.
Flanged Joints with O-Ring Seals
A flanged joint is used for connecting GRP pipes to other pipes and equipment made of varying
materials. Flanged joints can be used with O-Ring seals or plate seals.
Flange drilling is carried out according to the required standard
Plate Flange
Counter flange from
structure material
Plate Flange
Flanged Joint with O-Ring Seal
Flange with a channel
for a round seal
Flanged Joint with O-Ring Seal
Flanges must be fastened carefully, paying close attention to the closing moment and bolts closing order,
as appropriate for the type of seal.
Bolt Fastening Torque for O-Ring Flanges
Fastening Torque
Pipe Grade
[Nm]
[Bar]
Pipe diameter X 50 (in meters)
6
Pipe diameter X 100 (in meters)
10
Pipe diameter X 200 (in meters)
16 , 20
Pipe diameter X 225 (in meters)
25
Flanges with O-Ring seals require a fastening torque which is lower than plate flanges.
F ibe r te c h In d u s tries F iberglass Pipes Lt d. | Te l : 0 9 -7 9 2 9 4 4 1 | Fa x: 0 9 -7 9 2 9 4 4 2 | w w w.fi b e rte c h. c o. il
Additional Coupling Methods for Fibertech Pipes
Bolt fastening must be done in stages, moderately and gradually
• Flanges up to 450mm in diameter must be fastened in 12Nm intervals
• Flanges with a diameter from 500mm to 600mm must be fastened in 27Nm intervals
• Flanges over 600mm in diameter must be fastened in 34Nm intervals
Flange bolt fastening order is important and based on the number of bolts in a flange, and
according to the following illustrations:
Flange bolt fastening order
Mechanical Joint Connections
GRP pipes can be connected to each other or to other pipes from different
materials using mechanical joints such as Teekay, Staub, Krausz, Aropl.
The joint utilizes an external metal fastening ring and a shaped internal seal.
The standard materials used for the structure are painted iron, galvanized iron
or varied stainless steel types.
Mechanical joints cannot carry the axial loads formed inside the pipelines.
F ibe r te c h In d u s tries F iberglass Pipes Lt d. | Te l : 0 9 -7 9 2 9 4 4 1 | Fa x: 0 9 -7 9 2 9 4 4 2 | w w w.fi b e rtec h. c o. il