En 10216-2 25crmo4 1.7218 Seamless Steel Tube for Pressure Purposes

• Customization: Available
• After-sales Service: Technical/Sample/Quality
• Type: Seamless
• Model NO.: 1.7218
• Technique: Hot-Rolled+Cold-Drawn
• Material: Alloy Steel
• Surface Treatment: as Required
• Usage: for Oil Equipment
• Section Shape: Round
• Cutting Service: Available
• Mtc: 3.1 or 3.2 Certificate
• Delivery Condition: a, N, Q+T
• Transport Package: Seaworthy Standard Package
• Specification: 30-850mm
• Trademark: SHUNFU
• Origin: China
• HS Code: 7304192000
• Production Capacity: 50000tons/Year

Product Description

EN 10216-2 25CrMo4 1.7218 Seamless Steel Tube For Pressure Purposes

We are leading Manufacturer, Supplier & Exporter of high quality EN 10216-2 Alloy Steel Seamless Pipes. These are manufactured in conformance with the international quality standards. These are used in varied engineering applications as well as in high temperature pipelines, boiler tubes and other areas. We offer these seamless pipes in different size, grades, thickness & Specification demanded by the clients. These pipes are used in various application industry like petrochemical, engineering, chemical, oil and gas and other industrial etc. We also offer our clients in competitive prices in the market.

This EN 10216 specifies the technical delivery conditions in two test categories for seamless tubes of circular cross section,with specified elevated temperature properties,made of non-alloy and alloy steel. NOTE This Part of EN 10216 may also be applied for tubes of non-circular cross section;necessary modification should be agreed a the time of enquiry and order.
 

25CrMo4 1.7218 Standard:

BS EN 10216 Seamless steel tubes for pressure purposes - Technical delivery conditions
Part2: Non-alloy and alloy steel tubes with specified elevated temperature properties
 

25CrMo4 1.7218 Seamless Steel Tube Chemical component

Steel name

Steel number

C

Si

Mn

P max

S max

Cr

Mo

Ni

Al

Cu

Nb

Ti max

V

Cr+Cu+Mo+Ni

Others

25CrMo4

1.7218

0.22 to 0.29

≤0,40

0.60 to 0.9

0.025

0.020

0.90 to 1.20

0.15 to 0.30

≤0.30

≤0.040

≤0.30

-

-

-

-

-

 

25CrMo4 1.7218 Seamless Steel Tube Heat Treatment

Steel grade	Steel number	Heat treatment	Austenizing Temperature °C	Cooling Medium	Tempering Temperature °C	Cooling medium
25CrMo4	1.7218	+QT	860 to 900	Air or Liquid	620 to 680	air

+QT = Quenching +Tempering (air or liquid),
 

25CrMo4 1.7218 Seamless Steel Tube Mechanical Property

Steel name	Steel number	Tensile properties at room temperature				Tensile Strength MPa	Elongation A min.%		Impact properties  Minimum avornge absorbed energy KV J
		T≤16	16<T≤40	40<T≤60	60<T≤100				l		t
		MPa	MPa	MPa	MPa		I	t	20	0	-10	20	0
25CrMo4	1.7218	345	345	345	-	540 to 690	18	15	40	-	-	27	-

 

25CrMo4 1.7218 Seamless Steel Tube Minimum proof strength at elevated temperature

Steel name	Steel number	Wall thickness mm	Minimum proof strength MPa at temperature of ºC
			100	150	200	250	300	350	400	450	500	550	600
25CrMo4	1.7218	≤60	-	315	305	295	285	265	225	185	-	-	-

 

INFORMATION TO BE SUPPLIED BY THE PURCHASER

Mandatory information: The following information shall be supplied by the purchaser at the time of enquiry and order:
a)the quantity(mass or total length or number);
b) the term "tube";
c)the dimensions(outside diameter D and wall thickness T or a set of dimensions covered by Option 11)
d)the designation of the steel grade in accordance with this Part of EN 10216;
e) the test category for non-alloy steel.
 

25CrMo4 1.7218 Seamless Steel Tube manufacture and delivery conditions

All NDT activities shall be carried out by qualified and competent level 1,2 and/or 3 personnel authorised to operate by the employer. The qualification shall be in accordance with EN 10256 or,at least,an equivalent to it. It is recommended that the level 3 personnel be certified in accordance with EN 473 or,at least,an equivalent to it. The operating authorisation issued by the employer shall be in accordance with a written procedure. NDT operations shall be authorised by level 3 NDT individual approved by the employer. NOTE The definition of level 1,2 and 3 can be found in appropriate Standards,e.g.EN 473 and pr EN 10256. The tubes shall be manufactured by a seamless process. Unless option 1 is specified,the tubes may be either hot or cold finished at the discretion of the manufacturer. The terms-hot finished"and"cold finished"apply to the condition of the tube before it is heat treated. Option 1:The tubes shall be cold finished before heat treatment. The tubes shall be supplied in the relevant heat treatment conditions as specified.
 

25CrMo4 1.7218 Seamless Steel Tube Appearance

The tubes shall be free from external and internal surface defects that can be detected by visual examination.The internal and external surface finish of the tubes shall be typical of the manufacturing process and, where applicable, the heat treatment employed. Normally the finish and surface condition shall be such that any surface imperfections requiring dressing can be identified. It shall be permissible to dress, only by grinding or machining, surface imperfections provided that, after doing so, the wall thickness in the dressed area is not less than the specified minimum wall thickness. All dressed areas shall blend smoothly into the contour of the tube. Any surface imperfection, which is demonstrated to be deeper than 5 % of the wall thickness T or 3 mm whichever is the smaller, shall be dressed. This requirement does not apply to surface imperfection with a depth equal or less 0,3 mm. Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects and tubes containing these shall be deemed not to conform to this Part of EN 10216.
 

25CrMo4 1.7218 Seamless Steel Tube Internal soundness

Leak Tightness: The tubes shall pass a hydrostatic test or electromagnetic test for leak-tightness. Unless option 7 is specified, the choice of the test method is at the discretion of the manufacturer. Option 7: The test method for verification of leak-lightness in accordance with 11.8.1 or 11.8.2 is specified by the purchaser.
Non-Destructive Testing: The tubes of test category 2 shall be subjected to a non-destructive testing for the detection of longitudinal imperfections. Option 8: The tubes of test category 2 shall subjected to a non-destructive testing for the detection of transverse imperfections in accordance. Option 9: The Tubes of test category 2 shall be subjected to a non-destructive testing for the detection of the laminar imperfections in accordance .
 

25CrMo4 1.7218 Seamless Steel Tube Straightness

The deviation from straightness of any tube length L shall not exceed 0,0015 L. Deviations from straightness over any one metre length shall not exceed 3 mm.
 

25CrMo4 1.7218 Seamless Steel Tube Mandatory inspection and tests

1. Cast analysis
2. Tensile test at room temperature
3. Flattening test  
4. Ring tensile test  
5. Drift expanding test
6. Ring expanding test
7. Impact test
8. Leak tightness test
9. Dimensional inspection
10. Visual examination
11. NOT for the detection of longitudinal imperfections
12. Material identification of alloy steels

 

25CrMo4 1.7218 Seamless Steel Tube Optional inspection and tests

1. Product analysis
2. Tensile test al elevated temperature
3. Impact test
4. Longitudinal impact test
5. Wall thickness measurement away from tube ends
6. NDT for the detection of transverse imperfections
7. NDT for the detection of laminar imperfections