ALGAHER-IS Incorporated joint, is anchored to concrete in the plug-in zone as the tube is undergoing the manufacturing process. The joints are manufactured to fit in the annular space between the tubes being its position secured in the anchorage points.

The incorporated joint “IS”, is manufactured in three different sections: IS - 12, IS – 14 and IS – 18, for tubes from ND 250 till ND 1200.

The incorporated joint is mounted on the previously cleaned base hoop. As this process is being undergone, the joint is fixed to the hoop, 35º gradient, testing the right emplacement of the upper and lower sealing lips. The tube mould is filled with concrete.

In order to get the right precision, the base hoop must not be removed till the concrete get harden (under normal circumstances, the day after)

Joints are manufactured taking into account the reaction force over the tube under different temperature conditions, avoiding in this way cracking and breakage.

The male and female coupling zones must be clean and the male ending must be greased with the right lubricant (specially in the curved zone). The male ending is centred on the female and then is pushed, with a minimum force power insertion of 2,5 X tube weight (under normal conditions)

The installation process must be done under the ISO UNE-EN 1610.