Bright Annealing Welded SS U Tubes For Thermal Power Generation TP304 / TP316L

Standard

ASTM A249&ASTM A688

Material Grade

TP304 / TP316L

OD(mm)

1/2” – 1 1/2”mm

WT(mm)

0.028” – 0.083”

L(mm)

500mm – 40000mm

Radius(mm)

32mm – 700mm

Delivery Condition

1)Bright Annealing Heat Treatment For the straight Tubes

2)The 2nd Heat treatment For the U bend Parts

Tolerance

According to ASTM A249&ASTM A688

Main ?process

Welding,Heat Treatment

Certificate

ISO 9001:2008

Packing

Bundles With Plastic Bags, Wooden Box With Angle Steel Frame Or others

Payment Terms

T/T, L/C at sight

Delivery Time

Generally 15Days – 45Days Or Depends on the quantity and Customers’ Request

Capacity

1000 Tons Per Month

Test items:

1.Chemical Composition(Spectral analysis )

2.Mechanical Property(Tensile Test Machine)

3.Expansion Test(Tensile Test Machine)

4.Flange Test(Tensile Test Machine)

5.Flattening Test(Tensile Test Machine)

6.? Hardness(sclerometer)

7. Metallo analysis(Metallo microscope)

8.Intergranular Corrosion Test

9.Surface and Dimension Test

10.Hydraulic Test(Hydraulic Test Machine)

11.?Air Pressure Test (Air Pressure Test machine)

12.Eddy Current Test(Eddy Current Machine)

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

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

American standards:

ASTM A249: Standard specification for welded austenitic steel boiler,superheater, heat-exchanger and condenser tubes.

ASTM A688:Standard specification for welded austenitic stainless steel feedwater heater tubes.

Competitive Advantages:

●ISO?System

●Manufacture License of Pressure Tube

●Production experience?about?20?years.

●Raw?Material?are from POSCO,BAO STEEL,TISCO,CRUPP ETC

●Market?-More?t