Product Name

Stainless Steel U Tubes

Material Grade

304 / 316L / 317L

Standard

ASTM A688

Delivery Condition

Bright Annealing

Brand Name

KORER

Application

Condenser Tube / Heat Exchanger Tube

A688 Standard Specification For Welded Austenitic Stainless Steel Feedwater Heater Tubes.

Item

Contents

Requirements

1

Materail

TP304, TP304L, TP304H, TP310S, TP316, TP316L, TP316Ti, TP316H, TP317L, TP321

2

Welding Method

TIG

3

Chemical Composition

Acc.to A688 and A480

4

Heat Treatment

Bright Annealing temperature 1040℃

5

Tolerance of Part \"U\"

Leg Length:-0mm - +3mm, Distance of Double Leg:±1.5mmm, Ratio of Radius:±1.5mm, The Bend Level:±1.5mm.

6

Tolerance

OD Acc.to A1016/A1016M, WT 10%

7

Mechanical Property

Flange Test, Reverse-Bend Test, Hardness Test, Hydrostatic or Other Nondestructive Test, Tension Test

8

Intergranular Corrosion

Supplement requirements - Acc.to the Buyer\'s demand

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

317

0.08

2.00

0.045

0.030

0.75

18.0~20.0

11.0~15.0