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Boiler / Heat Exchangers Stainless Steel Tube , Annealed Pickled Ss Seamless Pipe

Minimum Order Quantity : 1000kg Price : negotiable
Packaging Details : In bundles in wooden box Delivery Time : 3-4 weeks
Payment Terms : L/C, D/A, D/P, T/T, Western Union Supply Ability : 5000tons per year
Place of Origin: China Brand Name: Torich
Certification: ISO9001 Model Number: GB13296-1991

Detail Information

Standard: GB13296 -1991 Grade: 0Cr18Ni9
Production: Cold Drawn Delivery Condition: Pickled And Annealed
Application: Boiler And Heat Exchanger Type: Straight And U Bend
High Light:

stainless steel round tube

,

large diameter stainless steel tube

Product Description

Boiler and Heat Exchangers Tubes Annealed and Pickled Seamless Stainless Steel Tube

 

Seamless Stainless Steel tubes For Boiler and Heat Exchanger, are made according to the Chinese National Standard GB13296-91.

 

GB13296-91 is a standard applicable for Seamless Stainless Steel pipes which is used for boiler and heat exchanger.

 

GB13296-1991 Seamless Stainless Steel Tubes for Boiler, Heat Exchangers

0Cr18Ni9 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti

 

Technical tandard: GB13296-91

 

Tolerance for seamless stainless boiler tube:

Production Method Size(mm) Tolerance
Hot Rolling(Extrusion) OD ≤140 ±1.25%
>140 ±1.0%
WT ≤10 ±12.5%
>10 ±15%
Cold Drawn(Cold Rolled) OD 8~30 ±0.20mm
>30~50 ±0.30mm
>50 ±0.8%
WT 1.0~3

+12%

-10%

>3.0

±10%

 

Length:
The length or general steel tube:
Hot Rolling(Extrusion) tube: 3~12 m
Cold Drawn(Cold Rolled) tube: 3~8 m
The length for water pipe & boiler steel pipe:
Hot Rolling(Extrusion) tube: 4~12 m
Cold Drawn(Cold Rolled) tube: 4~8 m

 

Bending tolerance:

WT≤15mm, Bending≤1.5mm/m

WT>15mm, Bending≤2.0mm/m

 

End shape:

Both ends of the pipe should be cut at right angles, and remove burrs

 

Mechanical property

Heat treatment of longitudinal mechanical properties of steel pipe shall according to the standard.

Material

Tensile strength MPa

Yield Strength MPa

Elongation

%

0Cr18Ni9 520 205 35
1Cr19Ni9 520 205 35
0Cr19Ni10 480 175 35
1Cr18Ni9Ti 550 205 40
0Cr18Ni12Mo2Ti 530 205 35
0Cr26Ni5Mo2 590 390 18
1Cr17 410 245 20
00Cr27Mo 410 245 20
1Cr25Ti 440 245 17

 

Hardness:

For the tubes which W.T. ≥2 mm, Rockwell hardness tests should be taken.

 

Tests of the seamless boiler tubes:

1.Bending Test:

The tubes should take the bending test when OD ≤22mm. The bending angle is 90 degrees, and the bending radius is 6 times the outer diameter of the steel tube.

 

2. Hydraulic test;

Eddy current testing, ultrasonic testing can be used instead of hydraulic tests. When eddy current testing, GB/T 7735-1995 Gr. A should be followed; when ultrasonic testing, GB/T 5777-1996 Gr. C8 should be followed.

3. Flattening test

4. Flanging test

5. Expand test

 

 Boiler / Heat Exchangers Stainless Steel Tube , Annealed Pickled Ss Seamless Pipe 0Boiler / Heat Exchangers Stainless Steel Tube , Annealed Pickled Ss Seamless Pipe 1

 

 Boiler / Heat Exchangers Stainless Steel Tube , Annealed Pickled Ss Seamless Pipe 2 Boiler / Heat Exchangers Stainless Steel Tube , Annealed Pickled Ss Seamless Pipe 3

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