The base axial expansion joint for absorbing thermal expansion in a pipeline. Weld-end connections. Manufactured to project parameters.
| Type | Axial, single- and double-section |
| Nominal diameter, DN | 50–1400 mm (up to 3000 mm to order) |
| Working pressure, PN | 1.0 / 1.6 / 2.5 MPa (10 / 16 / 25 kgf/cm²); higher to order |
| Medium temperature | −60 … +450 °C |
| Working medium | water, steam, gas, petroleum products and other non-aggressive media |
| Bellows material | corrosion-resistant steel 12Kh18N10T |
| Connecting ends | steel 20, weld ends |
| Service life | from 50 to 1,000 cycles |
| Manufacturing | to project parameters (DN, PN, travel) |
Exact axial travel (compensating capacity) and face-to-face length depend on the size and are determined during selection from the completed data sheet.
Other diameters and designs — flanged (KSO.F), threaded (KSO-R) and high pressure (KSO.VD) — are manufactured to order.
The axial bellows expansion joint (KSO) is a pipeline compensating element that absorbs thermal expansion through the compression and extension of a corrugated metal shell, the bellows. It is used on straight runs to compensate axial movement between fixed supports.
The bellows is made of corrosion-resistant steel and remains leak-tight through repeated compression and extension cycles. The base design has weld ends; flanged (KSO.F), threaded (KSO-R) and high pressure (KSO.VD) designs are also available.
OnePROM manufactures KSO joints to project parameters: diameter, working pressure, medium temperature and required compensating capacity. We handle selection, calculation and supply, with installation and commissioning where required. To start the selection, send a completed data sheet or a specification.
We receive the data sheet or specification and select the type and parameters of the KSO joint.
We calculate the compensating capacity and prepare a quotation.
We manufacture the expansion joint to project parameters under quality control.
We ship to site and, where required, provide installation, installation supervision and commissioning.
The base axial expansion joint for absorbing thermal expansion in a pipeline. Weld-end connections, manufactured to project parameters. Applications: district heating networks, steam lines, process pipelines, hot and cold water systems, boiler houses and heating substations, oil and gas facilities.
The KSO joint is manufactured to project parameters: nominal diameter 50–1400 mm (up to 3000 mm to order); working pressure 1.0 / 1.6 / 2.5 MPa (10 / 16 / 25 kgf/cm²), higher to order; temperature −60 to +450 °C; working medium — water, steam, gas, petroleum products and other non-aggressive media.
Complete the data sheet on the site or request a quote — we will select the size for your parameters (DN, PN, working travel, medium). Made to order, delivered across Russia and the CIS.
Send a data sheet or specification — we will prepare a calculation and a quotation.
Request a quote