TK251. RDS technology of pipes 57-426mm, t.4-16mm

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42510. Typical operational flow chart TK-1 for assembling and welding pipe joints made of carbon steel 57-426mm with a wall thickness of 4-16mm performed by electrodes with the main coating type: LB-52U, diameter 3.0 mm (weld root layer) and OK 48.04 (or OK 53.70), diameter 4.0 mm (filling and facing layers