Name

Austenitic Heat Exchanger Tubes

Material Grade

AISI 304 / 316L

Standard

EN10217-7

Delivery Condition

Bright Annealing Or Anneal and Pickled

Brand Name

KORER

Application

Heat Exchanger

OD

6mm – 101.6mm

WT

0.3mm –3.5mm

Grade

Chemical Composition(%)

Remark

C≤

Mn≤

P≤

S≤

Si≤

Cr

Ni

Mo

N

Cu

304

0.08

2.00

0.045

0.030

0.75

18.0~20.0

8.0~10.50

0~0.1

304L

0.030

2.00

0.045

0.030

0.75

18.0~20.0

8.0~12.0

0~0.1

316

0.08

2.00

0.045

0.030

0.75

16.0~18.0

10.0~14.0

2.0~3.0

0~0.1

316L

0.030

2.00

0.045

0.030

0.75

16.0~18.0

10.0~14.0

2.0~3.0

0~0.1

EN 10217-7 Welded Steel Tubes for pressure purposes-Part 7 Stainless steel tubes

Item

Contents

Requirements

1

Materail

Acc. To EN10028-7

2

Welding Method

TIG Welding

3

ChemicalComposition

Table3,Table4

4

Heat Treatment

Annealing or Bright Annealing

5

Straightness

≤3mm/1000mm

6

Tolerance

OD,WT:Acc.to EN 10217-7 Table 10
Height Of Weld Seam: EN 10217-7 Table 11
Length:Acc.to EN 10217-7 Table 12

7

Mechanical Property

Tension Test, Flattening Test,  Flange Test, Leakage Test, NDT For Welding Seam, Expansion Test

Corrosion Test

Conducted only when specially requested by the client

Chemical Analysis

Test done as per required quality standards

Destructive / Mechanical Testing

Tensile | Hardness | Flattening | Flare | Flange

Reverse-bend and Re. flat tests

Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at