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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:
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Stainless Steel Seamless Tubes/Pipes |
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Production Standard |
ASTM, AISI,JIS, DIN, EN,GB, GOST,etc. |
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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 |
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Size |
Thickness |
0.05-20mm or as required |
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Outer Diameter |
0.1mm - 219.1mm |
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Length |
Any length below 12m |
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Tolerance |
±1% |
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Surface |
BA,2B,NO.1,NO.3,NO.4,8K,HL,2D,1D, or as required |
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Processing Service |
Bending, Welding, Decoiling, Cutting, Punching,Perforated, Cutting special size, Doing flatness, Surface treatment, etc |
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Pay term |
Ex-work, FOB, CIF, CFR, etc |
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Payment |
T/T, L/C, Western Union, etc |
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Package |
Export standard package: bundled wooden box, suit for all kinds of transport,or be required |
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MOQ |
No MOQ for stock Size, 10 KG for our production. |
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Sample |
Free and available |
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Quality |
Mill Test Certificate, ISO9001, CE, SGS, BV,TVE |
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Chemical Properties of Frequently-used Stainless Steel Material Grade：
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UNS |
ASTM |
EN |
JIS |
C% |
Mn% |
P% |
S% |
Si% |
Cr% |
Ni% |
Mo% |
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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 |
- |
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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 |
- |
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S30100 |
301 |
1.4319 |
SUS301 |
≤0.15 |
≤2.00 |
≤0.045 |
≤0.03 |
≤1.00 |
16.0-18.0 |
6.0-8.0 |
- |
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S30400 |
304 |
1.4301 |
SUS304 |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.03 |
≤0.75 |
18.0-20.0 |
8.0-10.5 |
- |
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S30403 |
304L |
1.4306 |
SUS304L |
≤0.03 |
≤2.00 |
≤0.045 |
≤0.03 |
≤0.75 |
18.0-20.0 |
8.0-12.0 |
- |
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S30908 |
309S |
1.4833 |
SUS309S |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.03 |
≤0.75 |
22.0-24.0 |
12.0-15.0 |
- |
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S31008 |
310S |
1.4845 |
SUS310S |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.03 |
≤1.50 |
24.0-26.0 |
19.0-22.0 |
- |
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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 |
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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 |
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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 |
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S32100 |
321 |
1.4541 |
SUS321 |
≤0.08 |
≤2.00 |
≤0.045 |
≤0.03 |
≤0.75 |
17.0-19.0 |
9.0-12.0 |
- |
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S40900 |
409 |
1.4512 |
SUS409 |
≤0.08 |
≤1.00 |
≤0.045 |
≤0.03 |
≤1.00 |
10.5-11.75 |
≤0.50 |
- |
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S43000 |
430 |
1.4016 |
SUS430 |
≤0.12 |
≤1.00 |
≤0.040 |
≤0.03 |
≤0.75 |
16.0-18.0 |
≤0.60 |
- |
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S43400 |
434 |
1.4113 |
SUS434 |
≤0.12 |
≤1.00 |
≤0.040 |
≤0.03 |
≤1.00 |
16.0-18.0 |
- |
- |
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S44400 |
444 |
1.4521 |
SUS444L |
≤0.025 |
≤1.00 |
≤0.045 |
≤0.03 |
≤1.00 |
17.5-19.5 |
≤1.00 |
- |
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S40300 |
403 |
- |
SUS403 |
≤0.15 |
5.5-7.5 |
≤0.04 |
≤0.03 |
≤0.50 |
11.5-13.0 |
≤0.60 |
- |
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S410000 |
410 |
1.40006 |
SUS410 |
≤0.15 |
≤1.00 |
≤0.035 |
≤0.03 |
≤1.00 |
11.5-13.5 |
≤0.60 |
≤1.00 |
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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 |
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N08904 |
904L |
1.4539 |
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≤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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