Seamless Stainless Steel Pipe/ Tubo sin soldadura de acero inoxidable
Seamless stainless steel pipe is made of steel ingot by piercing and then made by hot rolling, cold rolling or cold drawing.
1. Seamless Hot Rolling Processes
Round Pipe Billet → Heating → Perforation → Three Roll Skew Rolling, Continuous Rolling or Extrusion → Off Pipe → Sizing (Or Reducing Diameter)→ Cooling → Billet → Straightening → Water Pressure Test ( Or Flaw Detection) → Marking → Storage
2. Seamless Cold Rolling (Cold drawn) Processes
Round Pipe Billet → Heating → Perforation → Head → Annealing → Pickling → Oil (Copper) → Multi Pass Drawing (Cold Rolling) → Billet → Heat Treatment → Straightening → Water Pressure Test → Marking → Storage
Application: Seamless stainless steel pipe is widely used in boilers, central air conditioning, steel structure, machining, pipeline gas, fire protection, petroleum, chemical industry, medical, power and other industry fields, with high temperature resistant, low temperature resistant, corrosion.
Main Standard: ASTM A213, ASTM A312, ASTM A269
Main Grade: 304, 304L, 316, 316L, 321, 310, 310S, 347, 347H, 904L, 2205; 1.4301, 1.4306, 1.4401, 1.4404, 1.4541, 1.4845, 1.455, 1.4912, 1.4539
Outer Diameter: 6-325mm
Wall Thickness: 0.5-35mm
Length: Random
Surface Treatment: pickling or as customers’ requirement
How is it Measured? Outer Diameter (A) X Schedule or Wall Thickness (B) X Length
PS: Advantages Of Seamless Tubes & Pipes
A. Heavy and thick wall thickness
B. No weld seam. Generally be considered as better properties and corrosion resistance
C. Better ovality, or roundness
| Type |
Grade of Steel |
Size |
Standard |
|
GB |
ASTM |
JIS |
Germany |
|
|
|
|
|
|
DIN17006 |
DIN17007 |
|
|
| Seamless Stainless Steel Pipe |
0Cr18Ni9 |
304/S30400 |
SUS304 |
X5CrNi18-10 |
1.4301 |
OD 6-630mm
WT 0.5-28mm |
GB/T14975-2002 |
|
00Cr19Ni10 |
304L/S30403 |
SUS304L |
X2CrNi19-11 |
1.4306 |
|
GB/T14976-2002 |
|
00Cr25Ni20 |
310S/31008 |
SUS310S |
X12CrNi25-21 |
1.4845 |
|
GB13296-91 |
|
0Cr17Ni12Mo2 |
316/S31600 |
SUS316 |
X5CrNiMo17-12-2 |
1.4401 |
|
|
|
00Cr17Ni14Mo2 |
316L/S31603 |
SUS316L |
X2CrNiMo18-14-3 |
1.4435 |
|
ASTM A213/A213M |
|
0Cr19Ni13Mo3 |
317/S31700 |
SUS317 |
X5CrNiMo11-13-3 |
1.4449 |
|
ASTM A312/312M |
|
00Cr19Ni13Mo3 |
317S/S31703 |
SUS317L |
X2CrNiMo18-16-4 |
1.4438 |
|
JIS G3459 |
|
1Cr18Ni9Ti |
321/S32100 |
SUS321 |
X12CrNiTi18-9 |
1.4878 |
|
DIN2462 |
|
0Cr18Ni10Ti |
|
|
X6CrNiTi18-10 |
1.4541 |
|
|
|
0Cr18Ni11Nb |
347/S34700 |
SUS347 |
X12CrNiNb18-10 |
1.4550 |
|
|
| Item No. |
Steel Grades |
Main Steel Codes |
| 1 |
Austenite |
301, 310S, 304, 316, 316L, 316Ti, 317, 321, 347H, 904L |
| 2 |
Ferrite |
430 |
| 3 |
Bio-phase |
S31803, S2205 |
304, 304L, 316, 316L are the four most popular austenitic grades of stainless steel piping which provide excellent corrosion resistance.
Material is stocked in the annealed and pickled, bright annealed, mill finish and polished conditions.
