Franta has a full range of products to meet the different design needs of the connection, DN15-100 series have clamping type series, socket arc series can be selected, DN100 and above have groove connection and butt welding connection can be selected.

D-type series:

traditional clamping connection, through the deeper indentation on one side of the pipe fittings and tubes effectively connected, while it effectively eliminates the deformation of stainless steel pipe due to the clamping brought about by the deformation of the high-precision pipe fittings socket, seals and tubes are tightly matched, so as to obtain a reliable connection.

S-type series:

through the sealing mouth bilateral indentation makes the fittings and the camp material double connection, the fittings mouth unique extension edge design, ensure the sealing ring bilateral clamping to form a high pressure area, so as to get a better sealing performance.

Test Item	National Standard	D-Type Test Result	S-Type Test Result
Air Tightness Test	GB/T19228.1 (Test Pressure: 0.6MPa, Stabilization Time ≥20s)	Test Pressure: 0.6MPa, Stabilization for 30min, No leakage or detachment at the connection.	Test Pressure: 0.6MPa, Stabilization for 30min, No leakage or detachment at the connection.
Pressure Resistance Test	GB/T19228.1 (Test Pressure: 2.5MPa, Pressure Holding for 1min)	No leakage or detachment at the connection.	No leakage or detachment at the connection.
Negative Pressure Test	GB/T19228.1 (Vacuum Reduced to 80KPa, Maintained for 1h, Pressure Difference in Pipe ≤5KPa)	Test Result: 21.0	Test Result: 21.0
Pull-Out Test	Required Face Load: 3.46kN	Test Result: 8.56kN	Test Result: 8.6kN
Pressure Impulse Test	GB/T19228.1 (Test Pressure: 3.6MPa, Then Reduced to 0.5MPa, 100,000 Cycles)	No leakage, detachment or other abnormal phenomena at the connection.	No leakage, detachment or other abnormal phenomena at the connection.
Hydraulic Vibration Test	GB/T19228.1 (1.7MPa Water Pressure Filled in Pipe, Continuous Vibration for 1,000,000 Times)	No leakage, detachment or other abnormal phenomena at the connection.	No leakage, detachment or other abnormal phenomena at the connection.

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