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Tube finning machine

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Economizer for Boiler

air-cooled heat exchanger (air cooler)

seamless fin tubes with two longitudinal opposite fins

material

cast pipes

standard & specification

 
 
EN 10216-2 16Mo3 Alloy Steel Tubes for Pressure Purpose

DIN EN 10216-2/2004-- Seamless Steel Tubes for Pressure Purpose- Technical Delivery Condition  

Part 2: Non-alloy and alloy Steel Tubes with specified elevated temperature properties. 1.Grade and Chemical Composition  %

Material

C

Si

Mn

P

S

Cr

Mo

Ni

Al

Cu

Nb

Ti

V

Grade No.

Material No.

16Mo3

1.5415

0.12-0.20

0.35

0.40-0.90

0.025

0.020

0.30

0.25-0.35

0.30

≤0.040

0.30

 

 

 

13CrMo4-5

1.7335

0.10-0.17

0.35

0.40-0.70

0.025

0.020

0.70-1.15

0.40-0.60

0.30

≤0.040

0.30

 

 

 

10CrMo9-10

1.7380

0.08-0.14

0.50

0.30-0.70

0.025

0.020

2.0-2.5

0.90-1.10

0.30

≤0.040

0.30

 

 

 

2. longitudinally Mechanical Properties(S<16)

Material

Yield Strength

≥MPa

Tensile Strength ≥MPa

Elongation ≥%

Impact  AKV-J

Grade No.

Material NO.

0°c

-10°c

20°c

16Mo3

1.5415

280

450-600

22

 

 

40

13CrMo4-5

1.7335

290

440-590

22

 

 

40

10CrMo9-10

1.7380

280

480-630

22

 

 

40

3 Ends and straightness

3.1 Square cut ends , ends shall be free from excessive burrs. Ends also can be supplied in beveled ends with 30 degree if customer requires.

3.2The deviation from straightness, of any tubes (pipes) length L shall not exceed 0.15%L. Deviation from straightness over any one meter length shall not exceed 3mm..

4. Size Tolerance
4.1 OD Tolerance:
OD≤219.1,OD TOLERANCE: ±1%,W.T TOLERANCE :±12.5%
OD >219.1,OD TOLERANCE :±1%
4.2 WT Tolerance:
W.T Tolerance :S/D≤0.025 ,±20%
0.025 <S/D≤0.050,±15%
0.050 <S/D≤0.10,±12.5%
0.10 <S/D, ±10%
4.3 Length Tolerance:
L≤6M ..+10/-0mm
6M <L≤12M ..+15/-0mm
>12M:Negotiated

EN10216-1 steel chemical composition: P195TR1, P235TR1, P265TR1

Standard Grade Chemical Composition Mechanical Property
C Si Mn P≤ S≤ Cr≤ Mo (MPa) (MPa) Elongation
L t
EN10216-1 P195TR1 ≤0.13 ≤0.35 ≤0.7 0.025 0.02 0.3 ≤0.08 320~440 ≥195 ≥27 ≥25
P235TR1 ≤0.16 ≤0.35 ≤1.2 0.025 0.02 0.3 ≤0.08 360~500 ≥235 ≥25 ≥23
P265TR1 ≤0.20 0.40 1.40 0.025 0.02 0.3 ≤0.08 410~570 ≥265 ≥23 ≥19
 
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