PN-EN 10216-1, DIN 2448 / DIN 1629 ||| Seamless non-alloy steel tubes for pressure purposes with specified room temperature properties

PN-EN 10216-1, DIN 2448 / DIN 1629 Seamless non-alloy steel tubes for pressure purposes with specified room temperature properties – line pipes

Steel pipes for pressure and thermal purposes with specified room temperature properties – line pipes.

The pipes are used almost in all fields of industry. Thanks to their variety of types and sizes, they can also be used for general purposes. The pipes are manufactured through hot rolling or cold drawing.

The pipes are manufactured with the diameters between 21,3 - 660 mm and with the wall thickness of up to 100 mm in the case of hot rolling, and with the diameters between 10,2 - 108 mm and the wall thickness of up to 12,5 mm in the case of cold drawing.

PN-EN10216-1

Types used	Details: Table 1
Dimensions and tolerances	Details: Table 2
Pipe lengths	Pipes with precise lengths are manufactured with the following tolerance values: - for pipes 0-6m -0/+10% - for pipes 6-12m -0/+15% - for pipes longer than 12m -0/ to be negotiated
Tightness	Pipes should be subject to water testing (7Mpa) or electromagnetic testing.
Straightness	< 0,0015 of pipe length (below 3mm per every meter of pipe length)
Tests	Details: Table 3

Table 1

Pipe types	Steel grades	Mechanical properties							Resilience
		Upper yield limit Re min for wall thickness T mm			Tensile strength Rm	Elongation A min			Minimum energy average absorbed KV J at the temperature of 0°C
		T<\=16	16<T<\=40	40<T<\=60					1		t
		MPa	MPa	MPa	MPa	1		t	0	-10		0
Line pipes P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2	P195TR1	195	185	175	320-440	27	25		-	-		-
	P195TR2	195	185	175	320-440	27	25		40	28		27
	P235TR1	235	225	215	360-500	25	23		-	-		-
	P235TR2	235	225	215	360-500	25	23		40	28		27
	P265TR1	265	255	245	410-570	21	19		-	-		-
	P265TR2	265	255	245	410-570	21	19		40	28		27

Steel grades	CHEMICAL COMPOSITION (LADLE ANALYSIS)
Steel grades	C% max	Si% max	Mn% max	P% max	S% max	Cr% max	Mo% max	Ni% max	Al. cał% min	Cu% max	Nb% max	Ti% max	V% max	Cr + Cu+ Mo +Ni % MAX
P195TR1	0,13	0,35	0,70	0,025	0,020	0,030	0,08	0,030	-	0,030	0,010	0,04	0,02	0,70
P195TR2	0,13	0,35	0,70	0,025	0,020	0,030	0,08	0,030	0,02	0,030	0,010	0,04	0,02	0,70
P235TR1	0,16	0,35	1,20	0,025	0,020	0,030	0,08	0,030	-	0,030	0,010	0,04	0,02	0,70
P235TR2	0,16	0,35	1,20	0,025	0,020	0,030	0,08	0,030	0,02	0,030	0,010	0,04	0,02	0,70
P265TR1	0,20	0,40	1,40	0,025	0,020	0,030	0,08	0,030	-	0,030	0,010	0,04	0,02	0,70
P265TR2	0,20	0,40	1,40	0,025	0,020	0,030	0,08	0,030	0,02	0,030	0,010	0,04	0,02	0,7

Table 2

Outside diameter and wall thickness tolerances
Outside diameter D mm		Permissible deviations of outside diameter D	Permissible deviations of wall thickness t depending on the T/D ratio
			<\=0,025		>0,025 <\=0,050	>0,050 <\=0,10	>0,10
D<\=219,1	+\- 1% or =\- 0,5mm depending on which is greater			+\- 12,5% or 0,4 mm depending on which is greater
D>219,1				=\- 20%	=\- 15%	=\- 12,5%	=\- 10%
For the outside diameter of D>\=355,6 mm, local deviation outside of the upper deviation limit by further 5% of the wall thickness T is permitted

Table 3

Summary of quality inspections and tests TR1

Inspection and test type		Test frequency
		Internal inspection	Acceptance inspection
Mandatory tests	Ladle analysis	One representative result for the deliveries	One ladle
	Tensile testing		One per every tested batch
	Tightness testing	Every pipe
	Dimensional testing	-
	Dimension verification	-
Optional tests	Wall thickness measurement at a distance from pipe ends	-

Summary of quality inspections and tests TR2

Inspection and test type		Test frequency
Mandatory tests	Ladle analysis	One ladle
	Tensile testing	One per every tested batch
	Resilience testing at the temperature of 0ºC	One per every tested batch
	Tightness testing	Every pipe
	Dimensional testing	-
	Visual inspection	-
Optional tests	Ladle analysis	One ladle
	Resilience testing on longitudinal samples at the temperature of -10ºC	One per every tested batch
	Wall thickness measurements at a distance from pipe ends	-
	Non-destructive testing in order to identify any longitudinal discontinuity	Every pipe

DIN2448/DIN1629

Mechanical properties
Pipe types	Steel grades	Upper yield limit Re min for wall thickness in mm min			Tensile strength Rm MPa	Elongation A% min
ROUND SEAMLESS CARBON STEEL PIPES FOR SPECIAL REQUIREMENTS St37.0, St44.0, St52.0 according to DIN 1629	Steel grades	16	16 40	40 65	Tensile strength Rm MPa	1	t
	St37.0	235	225	215	350-480	25	23
	St44.0	275	265	255	420-550	21	19
	St52.0	355	345	335	50-650	21	19

CHEMICAL COMPOSITION (LADLE ANALYSIS)
Steel grades	Weld deoxidation type ( semi-killed steel only) RR special killed	C%	P%	S%	N%	Addition of nitrogen binding elements e.g. min 0,020% total Al
St37.0	R	0,17	0,040	0,040	0,009	-
St44.0	R	0,21	0,040	0,040	0,009	-
St52.0	RR	0,22	0,040	0,035	-	YES

Tests		Test scope	Test execution status	Material test certification type
No	Type	Test scope	Test execution status	Material test certification type
1	Tensile testing	1 pipe from the batch 1 try	To be negotiated	DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C
2	Ring testing	From one pipe end for testing according to 1 for wall thickness of 40mm, 1 try	To be negotiated	DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C
3	Tightness testing	All pipes	Manufacturer	DIN 50049 2.1
4	Surface inspection	All pipes	To be negotiated	DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C
5	Dimensional testing	All pipes	To be negotiated	DIN 50049 3.1.A OR DIN 50049 3.1.B OR DIN 50049 3.1 C
6	Check analysis	After negotiation	Manufacturer	DIN 50049 3.1.B