EN10216-3 Seamless Steel Tube For Pressure Purposes Technical Delivery Conditions

EN10216-3 Seamless Steel Tube For Pressure Purposes Technical Delivery Conditions

 We are manufacturer of Seamless Steel Tubes in China, if you want to buy Seamless Carbon Steel Tube, Oil Cylinder Steel Tube, Precision Seamless Steel Tube, Hydraulic Cylinder Steel Tube, please contact us.

Steels are fully killed made to fine grain.

The tubes are manufactured by a seamless process

 

Option 1:  The tubes shall be cold finished before heat treatment

 

Forming operation and delivery condition

Forming operation	Heat treatment condition	Symbol for delivery condition
Hot finished	Normalised	+N
Hot finished	Quenched and tempered	+QT
Hot finished + cold finished	Normalised	+N
Hot finished + cold finished	Quenched and tempered	+QT

 

Chemical composition

Steel GradeSteel Grade		C	Si	Mn	P	S	Cr	Mo	Ni	Al	Cu	N	Nb	Ti	V	Nb+Ti+V
Steel Name	Steel Number	max	max		max	max	max	max	max	min	max	max	max	max	max	max
P275NL1	1.0488	0.16	0.40	0.50-1.50	0.025	0.020	0.30	0.08	0.50	0.020	0.30	0.020	0.05	0.040	0.05	0.05
P275NL2	1.1104	0.20	0.40	0.50-1.50	0.025	0.015	0.30	0.08	0.50	0.020	0.30	0.020	0.05	0.040	0.05	0.05
P355N P355NH	1.0562 1.0565	0.18	0.50	0.90-1.70	0.025	0.020	0.30	0.08	0.50	0.020	0.30	0.020	0.05	0.040	0.10	0.12
P355NL1 P355NL2	1.1106 1.0566	0.20	0.50	0.90-1.70	0.025	0.015	0.30	0.08	0.50	0.020	0.30	0.020	0.05	0.040	0.10	0.12
P460N P460NH P460NL1	1.8905 1.8935 1.8915	0.20	0.60	1.00-1.70	0.025	0.020	0.30	0.10	0.80	0.020	0.70	0.020	0.05	0.040	0.20	0.22
P460NL2	1.8918	0.20	0.60	1.00-1.70	0.025	0.015	0.30	0.10	0.80	0.020	0.70	0.020	0.05	0.040	0.20	0.22
P620Q P620QH	1.8876 1.8877	0.20	0.60	1.00-1.70	0.025	0.020	0.30	0.10	0.80	0.020	0.30	0.020	0.05	0.040	0.20	0.22
P620QL	1.8890	0.20	0.80	1.00-1.70	0.025	0.015	0.30	0.10	0.80	0.020	0.30	0.020	0.05	0.040	0.20	0.22
P690Q P690QH P690QL1	1.8879 1.8880 1.8881	0.20	0.80	1.20-1.70	0.025	0.015	0.30	0.70	2.50	0.020	0.30	0.020	0.05	0.040	0.12	-
P690QL2	1.8888	0.20	0.80	1.20-1.70	0.020	0.010	1.50	0.70	2.50	0.020	0.30	0.015	0.06	0.05	0.12	-

 

Mechanical Properties at room temperature:

Steel Grade		Heat Treat -ment Cond -ition	Upper yield strength or proof strength Reh or Rp0.2  min  for wall thickness   T in mm           Mpa							Tensile Strength Rm for wall thickness T in mm				Elongation  A  min
			≤12	＞12 to≤20	＞20 to≤40	＞40 to≤50	＞50 to≤65	＞65 to≤80	＞80 to≤100	≤20	＞20 to≤40	＞40 to≤65	＞65 to≤100	l	t
Steel Name	Steel Number	+N
P275NL1 P275NL2	1.0488 1.1104	+N	275			265	255	245	235	390-530	390-510		360-480	24	22
P355N P355NH	1.0562 1.0565	+N	355		345	335	325	315	305	490-650	490-630		450-590	22	20
P355NL1 P355NL2	1.0566 1.1106	+N	355		345	335	325	315	305	490-650	490-630		450-590	22	20
P460N P460NH P460NL1 P460NL2	1.8905 1.8935 1.8915 1.8918	+N	360	350	440	425	410	400	390	560-730			490-690	19	17
P620Q P620QH P620QL	1.8876 1.8877 1.8890	+QT	620			580	540	-	-	740-930	690-860	630-800	-	16	14
P690Q P690QH P690QL1	1.8879 1.8880 1.8881	+QT	690			650	615	540	500	770-960	720-900	670-850	620-800	16	14
P690QL2	1.8888	+QT	690			690	650	580	540	770-960		700-880	680-860	16	14

 

Tolerances on OD an WT:

Outside diameter D mm	Toleances on D	Tolerances on T for a T/D ratio
		≤0.025	＞0.025≤0.050	＞0.050≤0.10	＞0.10
D ≤219.1	±1% or ±0.5mm whichever is the greater	±12.5 or ±0.4mm whichever is the greater
D ＞219.1		±20%	±15%	±12.5%	±10%

 

 

Number of tubes per test unit

Outside diameter D(mm)	Maximum number of tubes per test unit
D≤114.3	200
114.3＜D≤323.9	100
D＞323.9	50

 

Tolerances on exact lengths

Length L	Tolerance on exact length
2000＜L≤6000	﹢10 0
6000＜L≤12000	﹢15 0
L＞12000	﹢by agreement 0

 

Apperance:

The tubes are free from external and internal surface defects, that can be detected by visual examination

 

  

 

Normative References:

 

EN10002-1, Metallic materials-Tensile testing- Part 1: Method of test(at ambient temperature).

 

EN10002-5, Metallic materials-Tensile testing- Part 5: Method of testing(at elevated temperature).

 

EN10020, Definitions and classification of grades of steel.

 

EN10021, General technical delivery requirements for steel and iron products.

 

EN10045-1, Metallic materials-Charpy impact test-Part 1: Test method

 

EN10052, Vocabulary of heat treatment terms for ferrous products.

 

EN 10204, Metallic products - Types of inspection documents

 

EN10027-1, Designation systems for steels - Part 1:  Steel names, principle symbols.

 

EN10027-2, Designation systems for steels - Part 2:  Numerical systems.

 

EN10220,  Seamless and Welded steel tubes  -  Dimension and masses per unit length

 

EN10233,  Metallic materials -  Tubes -  Flattening test

 

EN10234,  Metallic materials -  Tubes -  Drift expanding test

 

EN10236,  Metallic materials -  Tubes -  Ring expanding test.

 

EN10237,  Metallic materials -  Tubes -  Ring tensile test

 

EN10246-1,  Non-Destructive Testing of steel tubes  Part 1:  Automatic electromagnetic testing of

                     seamless and welded (except submerged arc welded) ferromagnetic steel tubes for 

                     verification of hydraulic leaktightness

 

EN10246-5,  Non-Destructive Testing of steel tubes -  Part 5:  Automatic full peripheral magnetic

                     transducer /flux leakage testing of seamless and welded( except submerged arc-welded)

                     ferromagnetic steel tubes for the detection of longitudinal imperfections.

 

EN10246-6,  Non-Destructive Tesing of steel tubes - Part 6:  Automatic full peripheral ultrasonic tesing

                     of seamless steel tubes for the detection of transverse imperfections

 

EN10246-7,  Non-Destructive Tesing of steel tubes - Part 7:  Automatic full periheral ultrasonic tesing

                     of seamless steel tubes for the detectin of longitudinal imperfections