Quality control Stainless reputation of ZAO "Lengazteplostroy Trust", top professionalism of its employees and up-to-date technical base make it possible to render to the customers the following exclusive services: 1. non-destructive control of welded joints- roentgenography 2. visual-measuring control 3. welding electrode testing - check of welding and technological properties and defining of covering humidity 4. technological control over welding and insulating materials 5. mechanical testing of welding samples for rupture and bending - defining of strength limit, fluidity limit and bending angle 6. control over thickness and adherence of hydro-insulating lining 7. control over gas pipe lines insulation by DI-74 (spark defectoscope) 8. defining of soil compaction coefficient 9. communications search by cable detector The testing construction laboratory has the Certificate of Accreditation for technical competence in accordance with the field of accreditation and licenses for all executed works. We are ready to fulfill orders of any complexity!