| API |
American Petroleum Institute — issues standards for oil & gas industry |
| ASTM |
American Society for Testing Material — issues standards for line pipe |
| AWWA |
American Water Well Association — issues standards for water well pipe |
| A53A/A53B/A53F |
ASTM grades of carbon steel pipe — ERW & CW |
| A106 |
ASTM grade of carbon steel pipe — Seamless |
| BW |
old term for continuous weld pipe in sizes 4 inches and under |
| Bevel (BEV) |
angle formed between the prepared edge of the end of pipe and a plane perpendicular to the surface. Standard line pipe bevel is 30 degrees. |
| Black Pipe (BLK) |
denotes lacquered OD finish (as opposed to bare or galvanized) |
| Bundle |
number of pieces (same length) banded together for shipping. Height and width is usually 1-2 feet but pounds per bundle vary by size of pipe. |
| Burst |
internal pressure at which pipe will yield — often tested hydrostatically |
| Casing |
pipe used as a structural retainer for the walls of a drilled hole |
| Cold drawn |
pipe or tubing that is pulled through a die to reduce diameter and wall. This process usually produced closer tolerances and higher strength. |
| Coupling |
short piece used to connect to lengths of pipe |
| CW |
Continuous Weld — method of producing smaller diameter pipe in sizes 4 and under. Also known as BW. |
| Cft |
hundred foot (used in pricing, i.e. $425.97/cft vs. $4.2597/ft) |
| Cwt |
hundred weight. Often used in handling or trucking pricing, i.e. .30/cwt loadout charge or $1.65/cwt (freight) with a minimum such as 40,000 pounds. |
| DRL |
Double Random Length - usually 35ʼ to 45ʼ lengths of pipe |
| DSAW |
Double Submerged Arc Weld — welding process wherein the welding arc is submerged in flux while the welding takes place. Both inside and outside welds are required and are usually accomplished in separate processes. Used in producing very large OD pipe. |
| ERW |
Electric Resistance Weld — most common form of manufacture for pipe in sizes from 2 3/8 - 22 inch OD |
| FOB |
Free on Board — used to denote where pipe is to be provided to buyer |
| Fiber Optic Casing |
carbon steel pipe, bare or galvanized, usually in HRL, threaded on both ends, with a coupler on one end, and a thread protector on the other end. |
| GRC |
Galvanized Rigid Conduit |
| GALV |
galvanized carbon steel pipe |
| HRL |
Half Random Length — half length of steel pipe usually 10ʼ-0 to 10ʼ-6, but can vary from 8ʼ-0 to 12ʼ-0. |
| ID |
Inside Diameter |
| Joint |
one length of pipe |
| LS |
Limited Service — pipe not meeting specifications, usually rejected at the mill |
| MTR |
Mill Test Report — report prepared by a certified metallurgist certifying that the pipe meets the physical and chemical properties required. |
| Mid-weld |
two or more joints welded to form a larger one |
| Nipple |
short length of pipe (usually less than 12 inches) threaded on one or both ends |
| Nominal |
pipe size or wall thickness as specified (not actual). Sizes refer to approximate ID, even though OD is the fixed dimension. |
| OCTG |
Oil Country Tubular Goods — pipe made to API specification |
| OD |
Outside Diameter |
| PE |
Plain End |
| Psi |
pounds per square inch |
| Prime |
refers to first quality pipe for which MTRʼs can be provided |
| R2 |
Range 2 — pipe in random lengths from 23ʼ-0 to 35ʼ-0 |
| Reject |
pipe that has failed one or more certification tests at the mill and for which no MTRʼs will be provided and to which no guaranties or warranties can be made |
| Schedule |
numbers assigned to different wall thickness of pipe (i.e. sch 40) |
| Secondary |
same as reject |
| Smls |
seamless — pipe with no weld in the circumference |
| Spec |
specification |
| SRL |
Single Random Length — line pipe in random length from 16ʼ-0 to 24ʼ-0 |
| Std. |
Standard — reference to the wall thickness of pipe (equals sch 40 for 1/8 through 10”) |
| Stencil |
identification painted on pipe. Specification, size, wall, grade, test pressure, method of manufacture and mill are usually indicated. |
| Structural |
pipe intended for structural use and for which hydrostatic pressure test is not provided (i.e. A500) |
| T&C |
Threaded & Coupled. Male threads are cut into the pipe and a coupling provides female threads for both lengths being joined. |
| TBE |
Threaded Both Ends |
| TOE |
Threaded One End |
| Tensile Strength |
rating of steelʼs resistance to being pulled apart |
| Tolerance |
specified allowance +/- of the given dimension of a finished product due to inaccuracies in manufacturing, usually quite small (thousands of an inch or a very small percentage) and often part os a standard such as ASTM or API. |
| Type E |
ERW pipe |
| Type F |
CW pipe |
| Type S |
Seamless pipe |
| UL |
Underwriters Laboratories |
| Victaulic Groove |
rolled or cut grooves in the end of a pipe to accommodate a victaulic coupler |
| Xhy |
Extra heavy — pipe about 50% thicker than standard pipe |
| Xxhy |
Double Extra Heavy — about twice as thick as xhy |
| Yield |
tensile stress required to produce permanent elongation of steel pipe |
