Annex L (normative)
STEEL NUMBER / STEEL DESIGNATION

Table L.1 gives guidance on steel designations (steel numbers) which are used in Europe additionally to the steel name.

Tolerance for Diameter and Out - of - Roundness

Specified Outside Diameter D mm(in)	Diameter Tolerance mm (in)				Out-of-Roundness Tolerance mm (in)
	Pipe Except the End a		Pipe End a,b,c		Pipe Except the End a	Pipe End a,b,c
	SMLS Pipe	Welded Pipe	SMLS Pipe	Welded Pipe
< 60,3 (2.375)	- 0,8 (0.031) to + 0,4 (0.016)		- 0,8 (0.031) to + 0,4 (0.016)		1,2 (0.048)	0,9 (0.036)
≥ 60,3 (2.375) to ≤ 168,3 (6.625)	± 0,007 5 D		-0,4 (0.016) to +1,6 (0,063)		0,020 D for for d / t ≤ 75 by agreement for d / t > 75	0,015 D for for d / t ≤ 75 by agreement for d / t > 75
>168,3 (6.625) to ≤ 610 (24.000)	± 0,007 5 D	± 0,007 5 D but maximum of + 3,2 (0.125)	± 0,005 D, but maximum of ± 1,6 (0.063)		0,020 D	0,015 D
> 610 (24.000) to ≤ 1 422 (56.000)	± 0,01 D	± 0,005 D, but.maximum of + 4,0 (0.160)	± 2,0 (0.079)	±1,6 (0.063)	0,015 D but maximum of 15 (0.6), for d / t ≤ 75 by agreement for d / t > 75	0,01 D, but maximum of 13 (0.5). for d / t ≤ 75 by agreement for d / t > 75
> 1 422 (56 000)	as agreed

9.8.3 Pipe weld and HAZ tests

The minimum average (of a set of three test pieces) absorbed energy for each pipe weld and HAZ test, based upon full-size test pieces and a test temperature of 0 °C (32 °F), or if agreed a lower test temperature, shall be
a) 27 J (20 ft.lbf) for pipe with D < 1 422 mm (56.000in) in grades ≤ L555 or X80;
b) 40 J (30 ft.lbf) for pipe with D ≥ 1 422 mm (56.000 in);
c) 40 J (30 ft.lbf) for pipe in grades > L555 or X80.

NOTE      The HAZ of the longitudinal seam weld in HFW welded pipe is usually too narrow to permit accurate sampling for Charpy testing. The requirement for Charpy testing of the seam weld HAZ applies only to SAWL/SAWH and COWL/COWH pipe.

Tolerance for Wall Thickness

Wall thickness t mm (in)	Tolerances a mm (in)
SMLS pipe b
≤ 4,0 ( 0.157)	+ 0,6 (0.024) - 0,5 (0.020)
> 4,0 ( 0.157) to < 25,0 (0.984)	+ 0,150 t - 0,125 t
≥ 25,0 (0.984)	+3,7 (0.146) or + 0,1 t, whichever is the greater - 3,0 (0.120) or - 0,1 t, whichever is the greater
Welded pipe c, d
≤ 5,0 (0.197)	± 0,5 (0.020)
> 5,0 (0.197) to <15,0 (0.591)	± 0,1 t
≥ 15,0 (0.591)	±1,5 (0.060)

a   if the purchase order specifief a minus tolerance for wall thickness smaller than the applicable value given in this table, the plus tolerance for wall thickness shall be increased by an amount sufficient to maintain the applicable tolerance range.
b   for pipe with D ≥ 355,6 mm (14.000 in) and t ≥ 25,0 mm (0.984 in) the wall-thickness tolerance locally may exceed the plus tolerance for wall thickness by an additional 0,05 t, provided that the plus tolerance for mass (see 9.14) is not exceeded.
c   The plus tolerance for wall thickness does not apply to the weld area.
d   See 9.13.2 for additional restrictions.