Key Features:-

• Weld seams without temperature discolouration every time
• Easy and fast location even in confined areas
• Cost savings due to short purging times, low gas consumption and easy fast positioning
• Even gas coverage through special patented diffusers (Schnorrer system)
• Custom tailored designs
• Suitable for all processes
• Several fixing methods
• For all seam welding on tubes, vessels and sheet metal components

SC Profi:-

A range of models for tubes with internal diameters from 13mm to 215mm. The unit consists of two triple lip-sealing elements (temperature resistant up to 340 C for one hour), and a connecting axis which can be either flexible, rigid or a spring. This particular design guarantees not only an extremely short purging time (1.5 minutes max) but also a constant gas flow over the complete welded seam root area.

WS Plus Gas Cylinder:-

Gas cylinder made from corrugated CrNi steel profile fitted with temperature resisting lips and a gas diffuser, which ensures an even laminar flow of the protection gas to the weld seam root, with a maximum purging time of 2.5 minutes. Sizes for tubes with internal diameters of 190mm to 905mm. All models can be pulled through one or several bends easily.

Protection gas welding means the use of gas to protect a welded seam, usually the welded underside or root, in order to prevent oxidation which develops through contact with oxygen when the material is heated to welding temperature. In order to guarantee protection the residual oxygen in the welding area must be reduced to under 50 PPM (0.005%).

This is particularly the case with protection gas welding (any process) of not only austenitic but also ferritic steels and non ferrous metals such as titanium. The gas protection on the underside to the welding not only prevents oxidation but also assists with the shaping of the seam (e.g. a smooth surface with notch free flange fusion), thus producing a quality welded seam.

Discoloration resulting from different levels of residual oxygen in the welding atmosphere