AWS B2.1-1-211:2001(R2012)
Действует
STANDARD WELDING PROCEDURE SPECIFICATION (SWPS) FOR GAS TUNGSTEN ARC WELDING WITH CONSUMABLE INSERT ROOT FOLLOWED BY SHIELDED METALARC WELDING OF CARBON STEEL, (M-1/P-1/S-1, GROUP 1 OR 2), 1/8 THROUG1-1/2 INCH THICK, INMS-1, ER70S-2
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