The welding equipment ST-110 / ST-200 enables butt welding in continuously adjustable angles 0° to 30°. It consists of a frame and two pairs of clamping jaws. One pair is fixed and the other pair can be slid along the guide bars and driven by a control wheel. The welding device is fitted with a thrust indicator. Exchangeable inserts according to diameters of the welded pipes are put into the clamping jaws. Washers secure the inserts against release. Clamping of pipes is executed using a tiltable clamping screw. The equipment also includes a removable welding machine POLYS P - 4, a bench plane and a set of exchangeable inserts.

Angle weld:
The equipment ST-110 / ST-200 enables welding of pipes under angles. Setting of these angles can be executed in the range from 0 to 30°(2 x 15° resp.). For angle welding wide clamps can be used, which enable more fixed clamping of the welded pipe and prevent its deformation at higher thrust during welding.

Weld at the tank wall:
Narrow clamps can be used with welding of short necks (e.g. close to mouth of a tank). A fitting of 70 mm is long enough to be welded with ST-110, a 90 mm fitting can be welded with ST-200.

Welding of any fittings:
The equipment enables welding of fittings with minimum requirements for clamping. It is possible to weld fittings which are cut in any angle.

Alignment of co-axiality of pipes:
Sliding supports enable setting of vertical and horizontal corrections of the welded pipe. This can be used particularly with welding of deformed thin-walled pipes.