Quality control is an essential part of fabrication and erection of penstocks. Depending upon the basic steel material used for penstocks, the matching welding consumables are selected. Particularly, while using 'quenched' and 'tempered' steel, electrodes with low hydrogen content are to be baked and kept dry before use and while welding this steel, it is very essential to strictly control the pre-heat temperatures, inter-pass and post-heat temperatures. The company has wide experience in the welding of special steels requiring rigorous quality control procedures and our technicians have  mastered these techniques.