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Stainless Steel Seamless Pipe

Stainless Steel Seamless Pipe

Stainless steel seamless pipes are made from solid round billets, eliminating the need for welding and joints. Seamless stainless steel pipes are available in sizes and wall thickness specifications ranging from 1/8 inch to 26 inch OD.

  

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Description:

 

 

Stainless steel seamless pipes are also called stainless acid-resistant steel pipes. They are steel pipes that are resistant to corrosion by weak corrosive media such as air, steam, and water, and chemically corrosive media such as acids, alkalis, and salts. .

 

The corrosion resistance of stainless steel seamless pipes depends on the alloying elements contained in the steel. Chromium is the basic element that makes stainless steel corrosion-resistant. When the chromium content in steel reaches about 12%, chromium reacts with oxygen in the corrosive medium to form a very thin oxide film on the steel surface, which can prevent further corrosion of the steel matrix.

 

 

Specifications:

 

Stainless Steel Seamless Tubes/Pipes 

Production Standard

ASTM, AISI,JIS, DIN, EN,GB, GOST,etc.

 

Material

201, 202 , 304 , 304L ,30408, 304H , 309, 309S , 310 , 310S ,316, 316L, 316Ti, 317, 317L, 321, 347,347H , 409L , 420 , 420J1 , 420J2 ,430 , 431,434 , 436L , 439 , 441, 443 , 444 , 625,904L , 2205 ,2520,1.4301, 1.4307, 1.4541, 1.4401, 1.4404 ,1.4571, 1.4438, 1.4539, 1.4547, 1.4529, 1.4562, 1.4410, 1.4878, 1.4845, 1.4828, 1.4876,2.4858, 2.4819etc

 

 

Size

Thickness

0.05-20mm or as required

Outer Diameter

0.1mm - 219.1mm

Length

Any length below 12m

Tolerance

±1%

Surface

BA,2B,NO.1,NO.3,NO.4,8K,HL,2D,1D, or as required

Processing Service

Bending, Welding, Decoiling, Cutting, Punching,Perforated, Cutting special size, Doing flatness, Surface treatment, etc

Pay term

Ex-work, FOB, CIF, CFR, etc

Payment

T/T, L/C, Western Union, etc

Package

Export standard package: bundled wooden box, suit for all kinds of transport,or be required

MOQ

No MOQ for stock Size, 10 KG for our production.

Sample

Free and available

Quality

Mill Test Certificate, ISO9001, CE, SGS, BV,TVE

 

Chemical Properties of Frequently-used Stainless Steel Material Grade:

 

UNS

 ASTM

    EN

   JIS

  C%

 Mn%

   P%

  S%

 Si%

Cr%

Ni%

Mo%

S20100

201

1.4372

SUS201

≤0.15

5.5-7.5

≤0.06

≤0.03

≤1.00

16.0-18.0

3.5-5.5

-

S20200

202

1.4373

SUS202

≤0.15

7.5-10.0

≤0.06

≤0.03

≤1.00

17.0-19.0

4.0-6.0

-

S30100

301

1.4319

SUS301

≤0.15

≤2.00

≤0.045

≤0.03

≤1.00

16.0-18.0

6.0-8.0

-

S30400

304

1.4301

SUS304

≤0.08

≤2.00

≤0.045

≤0.03

≤0.75

18.0-20.0

8.0-10.5

-

S30403

304L

1.4306

SUS304L

≤0.03

≤2.00

≤0.045

≤0.03

≤0.75

18.0-20.0

8.0-12.0

-

S30908

309S

1.4833

SUS309S

≤0.08

≤2.00

≤0.045

≤0.03

≤0.75

22.0-24.0

12.0-15.0

-

S31008

310S

1.4845

SUS310S

≤0.08

≤2.00

≤0.045

≤0.03

≤1.50

24.0-26.0

19.0-22.0

-

S31600

316

1.4401

SUS316

≤0.08

≤2.00

≤0.045

≤0.03

≤0.75

16.0-18.0

10.0-14.0

2.0-3.0

S31603

316L

1.4404

SUS316L

≤0.03

≤2.00

≤0.045

≤0.03

≤0.75

16.0-18.0

10.0-14.0

2.0-3.0

S31703

317L

1.4438

SUS317L

≤0.03

≤2.00

≤0.045

≤0.03

≤0.75

18.0-20.0

11.0-15.0

3.0-4.0

S32100

321

1.4541

SUS321

≤0.08

≤2.00

≤0.045

≤0.03

≤0.75

17.0-19.0

9.0-12.0

-

S40900

409

1.4512

SUS409

≤0.08

≤1.00

≤0.045

≤0.03

≤1.00

10.5-11.75

≤0.50

-

S43000

430

1.4016

SUS430

≤0.12

≤1.00

≤0.040

≤0.03

≤0.75

16.0-18.0

≤0.60

-

S43400

434

1.4113

SUS434

≤0.12

≤1.00

≤0.040

≤0.03

≤1.00

16.0-18.0

-

-

S44400

444

1.4521

SUS444L

≤0.025

≤1.00

≤0.045

≤0.03

≤1.00

17.5-19.5

≤1.00

-

S40300

403

-

SUS403

≤0.15

5.5-7.5

≤0.04

≤0.03

≤0.50

11.5-13.0

≤0.60

-

S410000

410

1.40006

SUS410

≤0.15

≤1.00

≤0.035

≤0.03

≤1.00

11.5-13.5

≤0.60

≤1.00

S42000

420

1.4021

SUS420J1

0.16~0.25

≤1.00

≤0.04

≤0.03

≤1.00

12.0-14.0

≤0.75

≤1.00

N08904

904L

1.4539

 

≤0.0.3

≤2.0

≤0.035

≤0.03

≤1.00

18.0-20.0

23.0-25.0

3.0-4.0

 

Application:

 

Petroleum, chemical, medical, food, light industry, mechanical instrumentation

 

 

Manufacturing process of stainless steel seamless pipe:

 

▪Hot rolling (extruded seamless steel pipe):

 

round tube billet → heating → perforation → three-roller oblique rolling, continuous rolling or extrusion → tube removal → sizing (or reducing diameter) → cooling → straightening → water pressure test (or flaw detection) → marking → storage

▪Cold drawn (rolled) seamless steel pipe:

 

round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multiple cold drawing (cold rolling) → billet tube → heat treatment → straightening → water pressure test (flaw detection) → marking → storage.

What is the difference between hot rolling and cold rolling?

 
The rolling method of cold drawn (rolled) seamless steel pipe
is more complicated than that of hot rolling (extruded seamless steel pipe). The first three steps of their production process are basically the same. The difference starts from the fourth step. After the round tube billet is hollowed out, it needs to be headed and annealed. After annealing, it needs to be pickled with a special acidic liquid. After pickling, oil is applied. Then it is followed by multiple cold drawing (cold rolling) and then billet tube, special heat treatment. After heat treatment, the cooling process is the same as that of steel pipe.

 

FAQ:

 

1.Q: How long can make delivery?

A: For stock products, will make shipments in 5- 7 days after receiving deposit; for products need new production for common materials, usually make shipments in 10-15 days; for products need new production for special and rare materials, usually need 20-30 days to make shipment.

 

2.Q:Can I visit your factory?

A: Sure,welcome to you visit our factory at any time.

 

3.Q:Where are you?

A: Anyang in Henan Province.

 

4.Q: What certifications do your products have?

A: We have ISO 9001,BV, SGS, CE, TUV and other certifications.

 

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