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| двушовная дуговая сварка под флюсом (generally used to describe pipe manufactured from rolled steel plate using a simultaneous internal and external submerged arc welding process to form the longitudinal seam; DSAW); двухсторонняя дуговая сварка под флюсом (generally used to describe pipe manufactured from rolled steel plate using a simultaneous internal and external submerged arc welding process to form the longitudinal seam) | |||
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