EN10216-3 620QH Carbon Steel Seamless Tube , Seamless Alloy Pipe Fine Grain

Product Details:
Place of Origin: China
Brand Name: VANFORGE
Certification: ISO9001, ISO10012, ISO14001, OHSAS18001, ABS, BV, DNV, Lloyd, NK, PED
Payment & Shipping Terms:
Minimum Order Quantity: 10 metric tons
Price: Negotiable
Packaging Details: Seaworthy package for export
Delivery Time: 60 days
Payment Terms: L/C, T/T
Supply Ability: 1000 metric tons per month

Detail Information

Material: Alloy Steel Process: Hot Rolled
Type: Seamless Surface: Painted Or Ground
Shape: Round Length: Cut To Length On Request
Feature: High Strength
High Light:

seamless carbon steel pipe

,

seamless pressure pipe

Product Description

EN10216-3 620QH Carbon Steel Seamless Tube , Seamless Alloy Pipe Fine Grain

 

Seamless steel tubes for pressure purposes

Alloy fine grain steel tubes

 

The requirements of this European Standard rule when they differ from those in the standards and documents referred to below:

EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test (at ambient temperature).

EN 10002-5, Metallic materials - Tensile testing - Part 5: Method of testing (at elevated temperature).

EN 10020, Definitions and classification of grades of steel.

EN 10021, General technical delivery requirements for steel and iron products.

EN 10045-1, Metallic materials - Charpy impact test - Part 1: Test method.

EN 10052, Vocabulary of heat treatment terms for ferrous products.

EN 10204, Metallic products - Types of inspection documents.

EN 10027-1, Designation systems for steels - Part 1: Steel names, principle symbols.

EN 10027-2, Designation systems for steels Part 2: Numerical systems.

ENV 10220, Seamless and welded steel tubes - Dimensions and masses per unit length

EN 10233, Metallic materials - Tubes - Flattening test.

EN 10234, Metallic materials - Tubes - Drift expanding test.

EN 10236, Metallic materials - Tubes - Ring expanding test.

EN 10237, Metallic materials - Tubes - Ring tensile test.

EN 10246-1, 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 leak tightness.

EN 10246-5, 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.

EN 10246-6, Non-Destructive Testing of steel tubes - Part 6: Automatic full peripheral ultrasonic testing of seamless steel tubes for the detection of transverse imperfections.

EN 10246-7, Non-Destructive Testing of steel tubes - Part 7 : Automatic full peripheral ultrasonic testing of seamless and welded (except submerged arc welded) steel tubes for the detection of longitudinal imperfections.

EN 10246-14, Non-Destructive Testing of steel tubes - Part 14: Automatic ultrasonic testing of seamless and welded (except submerged arc welded) steel tubes for the detection of laminar imperfections.

EN 10256, Non-Destructive Testing of steel tubes - Qualification and competence of level 1 and level 2 NDT personnel.

EN ISO 377, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997)

EN ISO 2566-1, Steel - Conversion of elongation values – Part 1: Carbon and low-alloy steels (ISO 2566-1:1984)

prEN 10168), Iron and steel products - Inspection documents - List of information and description

prEN 10266), Steel tubes, fittings and structural hollow sections - Symbols and definition of terms for use in product standards

EURONORM 103), Microscopic determination of ferritic grain size of steel.

ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition

CR 10260, Designation systems for steel - Additional symbols

CR 10261, ECISS Information Circular IC 11 - Iron and steel - Review of available methods of chemical analysis.

 

fine grain steel

steel having a ferritic grain size equal to or finer than 6 in accordance with EURONORM 103

 

Deoxidation process

Steels shall be fully killed and be made to a fine grain practice

 

Tube manufacture and delivery conditions

1 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 EN 10256

 

2 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 in accordance with 3.

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

 

3 The tubes shall be supplied in the relevant heat treatment conditions.

 

Forming operation and delivery condition

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

 

4 In case of steel grade P355N and P355NH normalising may be replaced by normalising forming.

 

5 For steel grade P460 it may be necessary to apply delayed cooling or additional tempering after normalising. For N-steel grades accelerated cooling after austenitizing may be necessary in order to achieve the intended structure and material properties in case of wall thickness above 25 mm or T/D > 0,15

In both cases, the decision shall be left to the discretion of the manufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated with accelerated cooling shall be designated by the steel name supplemented by the symbol “+QT “.

 

Chemical composition, %

Steel grade

C

max

Si

max

Mn

P

max

S

max

Cr

max

Mo

max

Ni

max

Al

min

Cu

max

N

max

Nb

max

Ti

max

V

max

Nb+Ti+V

max

P355NL1 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
P460NL1 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
P620QH 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
P690QH 0.20 0.80 1.20-1.70 0.025 0.015 1.50 0.70 2.50 0.020 0.30 0.015 0.06 0.05 0.12  
P690QL1 0.20 0.80 1.20-1.70 0.025 0.015 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 treatment

Upper yield strength or proof strength, ReH or Rp0.2, min.

for wall thickness T in mm

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

I t
MPa MPa MPa MPa MPa MPa MPa MPa MPa MPa MPa % %
P355NL1 +N 355 355 345 335 325 315 305 490-650 490-630 490-630 450-590 22 20
P460NL1 +N 460 450 440 4245 410 400 390 560-730 560-730 560-730 490-690 19 17
P620QH +QT 620 620 580 540 500 - - 740-930 690-860 630-800 - 16 14
P690QH +QT 690 690 650 615 580 540 500 770-960 720-900 670-850 620-800 16 14
P690QL1 +QT 690 690 650 615 580 540 500 770-960 720-900 670-850 620-800 16 14

 

 

Appearance

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

 

2 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.

 

3 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.

 

4 Any surface imperfection, which is demonstrated to be deeper than 5 % of the wall thickness T or 3mm whichever is the smaller, shall be dressed. This requirement does not apply to surface imperfection with a depth equal or less 0,3 mm

 

5 Surface imperfections which encroach on the specified minimum wall thickness shall be considered defects and tubes containing these shall be deemed not to comply with this Part EN 10216.

 

Leak-tightness

The tubes shall pass a hydrostatic test or electromagnetic test for leak tightness.

 

Non-Destructive testing

The tubes of test category 2 shall be subjected to a Non-Destructive testing for the detection of longitudinal imperfections.

 

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.

 

Preparation of ends

Tubes shall be delivered with square cut ends. The ends shall be free from excessive burrs.

 

Types of inspection documents

An inspection certificate 3.1.B, in accordance with EN 10204, shall be issued.

 

Content of inspection documents

The content of the inspection document shall be in accordance with prEN 10168.

The inspection certificate or inspection report shall contain the following codes and information:

- commercial transactions and parties involved;

- description of products to which the inspection document applies;

- direction of the test pieces and testing temperature;

- tensile test;

- impact test;

- other tests (e.g. flattening);

- chemical composition on cast analysis (product analysis if applicable);

- marking and identification, surface appearance, shape and dimensional properties;

- leak-tightness test, NDT, material identification if applicable;

 

Test methods

1 Tensile test

1.1 Tensile test at room temperature, the test shall be carried out at room temperature in accordance with EN 10002-1

1.2 Tensile test at elevated temperature, the test shall be carried out in accordance with EN 10002-5 at 400 °C or 300°C

2 Flattening test shall be carried out in accordance with EN 10233.

3 Ring tensile test shall be carried out in accordance with EN 10237.

4 Drift expanding test shall be carried out in accordance with EN 10234.

5 Ring expanding test shall be carried out in accordance with EN 10236.

6 Impact test shall be carried out in accordance with EN 10045-1,

7 Leak tightness test

7.1 Hydrostatic test

7.2 Electromagnetic test

8 Dimension inspection

9 Visual examination

10 Non-destructive test

Tubes of test category 2 shall be subjected Non-Destructive Testing for the detection of longitudinal imperfections, in accordance with EN 10246-7, to acceptance level U2 sub-category C or EN 10246-5 acceptance level F2.

 

Material identification

Each tube made of steel grades P460 , P620 and P690 shall be tested by an appropriate method to ensure that the correct grade is being supplied.

 

Seamless Steel Tube Specifications

Standard : EN10216-3

Outside Diameter: 325-1067 mm

Wall Thickness: 9.53-140 mm

Length: On the request

 

 

Production procedure

EN10216-3 620QH Carbon Steel Seamless Tube , Seamless Alloy Pipe Fine Grain 0

EN10216-3 620QH Carbon Steel Seamless Tube , Seamless Alloy Pipe Fine Grain 1

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