Flanged connection (PN6)
Flanged connection (PN10)
Flanged connection (PN16)
Certified expansion joints
When a body has an increase of temperature it’s subjected thermal expansion, that depends on the material and is proportional. If this physical phenomenon is considered in pipelines subjected to thermal excursions, the problem is clear: a plastic deformation of the pipe. The solution to this problem is given by compensating dilatation.
Expansion joints are elements that could be installed in pipelines to discharge tensions.
These items are built of thin sheets of stainless steel with longitudinal welds, to not increase thickness with consequent concentration of efforts
The bellows are cold formed with an hydraulic/mechanical process cenceived not to alter the initial structure and yield strenght of the material.
Bellows are welded to steel flanges or sleeves to allow easy installation in the pipelines.
They can be combined together and tied to systems able to meet the most varied compensation requirements. Based on the type of movement absorbed can be selected among various geometries of expansion joints:
Our expansion joints are projected and manufactured following the standards:
Nominal Pressure = Maximum operating pressure;
Rx: Internal diameter;
P: Internal pressure;
F: Bottom thrust caused by P = r*r*p*P;
Am: Medium area= F/P/
Bellows made of AISI321 or AISI316L stainless steel, pipes or flanges in carbon steel, on request even in stainless steel AISI304L, AISI316L, AISI321.
On request it’s possible to manufacture bellows even with Nickel alloy and special stainless steels such as Duplex.
All expansion joints are subjected to dimensional and functional testing, and need a hydraulic test 1.5 times the operating pressure, shown on our tables, for a minimum time of 60 seconds, unless otherwise indicated by the customer. If there is no hydraulic test requested, joints will undergo a pneumatic test with air immersed in water at 5 bar/g maximum pressure for a minimum time of 60 seconds.
Any type and material (UNI, ANSI. ecc.), Welded (GTAW).
Our expansion joints can be supplied with different type of accessories, depending on the customer requests.
can be supplied with the following accessories:
Corrugated hoses are fully Customizable according to customer’s requests