AWS B2.1-1-021:2018
Действует
STANDARD WELDING PROCEDURE SPECIFICATION (SWPS) FOR GAS TUNGSTEN ARC WELDING FOLLOWED BY SHIELDED METAL ARC WELDING OF CARBON STEEL, (M-1/P-1/S-1, GROUP 1 OR 2), 1/8 THROUGH 1-1/2 INCH THICK, ER70S2 AND E7018, AS-WELDED OR PWHT CONDITION
— 33 стр.
