SMAW- GROOVE WELDS WITH BACKING

(Blank)

100

One backing material used in groove welding is

an inert gas

200

Single-groove welds with metal backing are used for

high-strength ,high-quality welds 

300

When preparing weld coupons for V-groove welds with backing, cut the metal backing strips so that they are at least

1" * 8" ( 6 mm X 2.5 cm X 20.3cm )

400

To conform with AWS limited-thickness test coupon reequipments, weld coupons should be carbon steel that is 

3/8" thick