API 5L Terms and Definitions 

For the purpose of this document, the API 5L terms and definitions

in ISO 6929 or ASTM A 941 for steel products,

in ISO 4885 or ASTM A 941 for heat treatment,

in ISO 377, ISO 404, ISO 10474 or ASTM A 370, whichever is applicable, for the types of sampling procedures, inspection and inspection documents, except as given in API 5L, 4.1 to 4.53, shall apply.

1

as agreed

requirement to be as agreed upon by the manufacturer and the purchaser, and specified in the purchase order

NOTE Associated, for example, with items covered by 7.2 a).

2

as-rolled

delivery condition without any special rolling and/or heat-treatment

3

cold-expanded pipe

pipe that, while at ambient mill temperature, has received a permanent increase in outside diameter or circumference throughout its length, by internal hydrostatic pressure in closed dies or by an internal expanding mechanical device

4

cold-sized pipe

pipe that, after forming (including sizing on EW), while at ambient mill temperature, has received a permanent increase in outside diameter or circumference for all or part of its length, or permanent decrease in outside diameter or circumference for all or part of its length

5

cold finishing

cold-working operation (normally cold drawing) with a permanent strain greater than 1,5 %

NOTE The amount of permanent strain generally differentiates it from cold expansion and cold sizing.

6

cold forming

process in which a strip or plate is formed into a pipe without heating

7

continuous welding

process of forming a seam by heating the strip in a furnace and mechanically pressing the formed edges together, wherein successive coils of strip had been joined together to provide a continuous flow of strip for the welding mill

8

COW pipe

tubular product having one or two longitudinal seams or one helical seam, produced by a combination of gas metal-arc and submerged-arc welding wherein the gas-metal arc weld bead is not completely removed by the submerged-arc welding passes

9

COWH pipe

tubular product having one helical seam produced by a combination of gas metal-arc and submerged-arc welding wherein the gas-metal arc weld bead is not completely removed by the submerged-arc welding passes

10

COWL pipe

tubular product having one or two longitudinal seams produced by a combination of gas metal-arc and submerged-arc welding wherein the gas-metal arc weld bead is not completely removed by the sub-merged arc welding passes

11

COW seam

longitudinal or helical seam produced by a combination of gas metal-arc and submerged-arc welding wherein the gas-metal arc weld bead is not completely removed by the submerged-arc welding passes

12

CW pipe

tubular product having one longitudinal seam produced by continuous welding

13

defect

imperfection of a size and/or population density greater than the acceptance criteria specified in this International Standard

14

EW pipe

tubular product having one longitudinal seam produced by low- or high-frequency electric-welding

15

EW seam

longitudinal seam produced by electric welding

16

electric welding

EW

process of forming a seam by electric-resistance welding, wherein the edges to be welded are mechanically pressed together and the heat for welding is generated by the resistance to flow of electric current applied by induction or conduction

17

gas metal-arc welding

welding process that produces melting and coalescence of metals by heating them with an arc or arcs between a continuous consumable electrode and the work, wherein the arc and molten metal are shielded by an externally supplied gas or gas mixture

NOTE Pressure is not used and the filler metal is obtained from the electrode.

18

HFW pipe

EW pipe produced with a welding current frequency equal to or greater than 70 kHz

19

if agreed

requirement to be as prescribed, or more stringent than is prescribed, if agreed upon by the manufacturer and the purchaser and specified in the purchase order

NOTE Associated, for example, with items covered by 7.2 c).

20

imperfection

discontinuity or irregularity in the product wall or on the product surface that is detectable by inspection methods outlined in this International Standard

21

indication

evidence obtained by non-destructive inspection

22

inspection

activities, such as measuring, examining, testing, weighing or gauging one or more characteristics of a product, and comparing the results of such activities with the specified requirements in order to determine conformity

Other than the above part 1 API 5L Terms and Definitions, there are another part 2 API 5L Terms and Definitions we will show you in next post. HYSP would like to share with you the API 5L specification details and help you to understand the API 5L Spec better.

You can DOWNLOAD API 5L Specification Line Pipe (1) – API 5L Terms and Definitions – part 1