Jiangsu Sheye Metal Co.,Ltd
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Duplex Stainless Steel Pipe

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.

Duplex Stainless Steel Pipe

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

Specification of Duplex Stainless Steel Pipe

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 of Duplex Stainless Steel Pipe

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 of Duplex Stainless Steel Pipe


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 of Duplex Stainless Steel Pipe


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 of Duplex Stainless Steel Pipe
Duplex stainless steel 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.

If you are going to buy high quality duplex stainless steel pipe in stock, please feel free to contact Sheye Metal, which is one of the well-known manufacturers and suppliers of good duplex stainless steel pipe.

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