GLOSSARY

Resistance of a metal to plastic deformation, usually indentation. Sometimes refers to stiffness or temper.

The chemical analysis representative of a heat of steel, determined by analyzing a test sample obtained during the pouring of the steel.

A spud barge is a type of barge that is moored by through-deck pilings or steel shafts, which are pipes driven into the sand at the bottom of a river or sea to provide extra stability. These pipes are often called “spuds,” which is how the spud barge got its name. Spud Barges are favored for their size and steadiness in offshore work zones, but they’ve been adapted to serve other purposes as well.

Hydrogen Induced Cracking. Used to evaluate the resistance of pipeline and pressure vessel plate steel to cracking caused by hydrogen absorption from aqueous sulfide corrosion.

Welding technique used during ERW.

Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig.

(sometimes also called pipe jacking) is a trenchless method for installation of steel pipes and casings.

Mill test where the pipe ends are sealed, and high pressure water is introduced at predetermined pressures.