Duplex Stainless Steel Pipe

Duplex Stainless Steel Pipe

Duplex stainless steel pipes are becoming more and more common.

Product Details

Duplex stainless steel pipes are becoming more and more common. Due to its excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion, duplex stainless steel tubing are being offered by all the major stainless steel mills.

Sheye Metal is one of the leading manufacturers and suppliers of stainless steel products. Duplex stainless pipe is one of the major products in Sheye Metal.

Duplex stainless steel pipe can be divided into two types: seamless and welded stainless steel pipe. Sheye Metal can manufacture stainless steel duplex pipe in S31500, S31803, S32205, S32304, S32520,S32550, S32750, S32760, and others.

Duplex stainless steel pipe are always inventoried in diameter 10mm to 762mm. The wall thickness of duplex stainless tube we produce is 0.5-50mm.

 

Specification

Size

OD: 10 ~ 762mm; WT: 0.5 ~ 50mm; Length: 6m, 12m, Max.18m

Process

Seamless, Welded

Grade

S31500,  S31803,  S32205,  S32304,  S32520, S32550,  S32750,  S32760

Standard

ASTM A789, ASTM A790

Surface

Aid Pickling, Polishing(180#, 220#, 240#, 320#, 400#, 600#)

Theoretical Weight(kg/m)

Weight/meter = (OD-WT)*WT*0.02507    Both OD and WT in mm.

 

Note:
OD is the specified outside diameter.
WT is the specified wall thickness

 

Chemical Composition

UNS

C

Mn

P

S

Si

Ni

Cr

Mo

N

Cu

Others

S31500

0.030

1.20-2.00

0.030

0.030

1.40-2.00

4.2-5.2

18.0-19.0

2.50-3.00

0.05-0.10

S31803

0.030

2.00

0.030

0.020

1.00

4.5-6.5

21.0-23.0

2.5-3.5

0.08-0.20

S32205

0.030

2.00

0.030

0.020

1.00

4.5-6.5

22.0-23.0

3.0-3.5

0.14-0.20

S32304

0.030

2.50

0.040

0.040

1.00

3.0-5.5

21.5-24.5

0.05-0.60

0.05-0.20

0.05-0.60

S32520

0.030

1.50

0.035

0.020

0.80

5.5-8.0

24.0-26.0

3.0-5.0

0.20-0.356

0.5-3.00

S32550

0.04

1.50

0.040

0.030

1.00

4.5-6.5

24.0-27.0

2.9-3.9

0.10-0.25

1.50-2.50

S32750

0.030

1.20

0.035

0.020

0.80

6.0-8.0

24.0-26.0

3.0-5.0

0.24-0.32

0.5

S32760

0.05

1.00

0.030

0.010

1.00

6.0-8.0

24.0-26.0

3.0-4.0

0.20-0.30

0.50-1.00

W0.50-1.00

Note A: Maximum, unless a range or minimum is indicated. Where ellipses(…) appear in this table, there is no minimum and analysis for the element need not to be determined or reported.

 

Tensile and Hardness

UNS Designation

Tensile Strength, min MPa

Yield Strength, min MPa

Elongation in 50mm min, %

Hardness, Max

    

HBW

HRC

S31500

630

440

30

290

30

S31803

620

450

25

290

30

S32205

655

450

25

290

30

S32304

600

400

25

290

30

S32520

770

550

25

310

S32550

760

550

15

297

31

S32750

800

550

15

300

32

S32760

750

550

25

300

 

Tolerances

Group

Size, Outside Diameter, mm

Tolerances in Outside Diameter, mm

Average Wall Tolerance in Wall Thickness, %

Minimum Wall Tolerances in Wall Thickness, %

Tolerances in Cut Length, mm

Thin Wall Tubes

Over

Under

Over

Under

1

Up to 12.7, excl

±0.13

±15

30

0

3

0

2

12.7 to 38.0, excl

±0.13

±10

20

0

3

0

Less than 1.6mm specified

3

38.1 to 88.9, excl

±0.25

±10

20

0

5

0

Less than 2.4mm specified

4

88.9 to 139.7, excl

±0.38

±10

20

0

5

0

Less than 3.8mm specified

5

139.7 to 203.2, excl

±0.76

±10

20

0

5

0

Less than 3.8mm specified

 

Packing Information
Duplex pipes from Sheye Metal are packed according to the customer's requirement. To avoid any damage which might be caused during international transportation, we provide some optional packaging methods, including woven bags, plywood cases, and wooden boxes.

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