K-81TB2 description: K-81TB2 is formulated for butt and fillet welding of 1.25%Cr-0.5%Mo steels used for high pressure vessels, oil refining industries, steam pipes of boilers etc.(ASTM A182 Gr. F2,F11,F12; A193 Gr. B7; A234 Gr. WP11,WP12; A250 Gr.T11; A336 Gr. F11,F12 A356 Gr. 5,6,8,9; A387 Gr. 2,11,12; A389 Gr. C23; A672 Gr. H75, 80)