Seamless 321 Stainless Steel Pipe Roude Tubewith Enough Reserve
321 stainless steel pipe: It is mainly used to manufacture high-quality carbon structural steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes for steam boiler pipes with high pressure and above. These boiler pipes are often working under high temperature and high pressure. The pipe will be oxidized and corroded under the action of high-temperature flue gas and water vapor. Therefore, the steel pipe is required to have high enduring strength, high oxidation resistance, and good organizational stability, hydraulic prop pipe.
Chemical Composition:
| Unit | C | Mn | P | S | Si | Cr | Ni |
| <= % | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 |
Machine Capability:
| Yield strength (N/mm2) | Tensile strength (N/mm2Mpa) | Elongation | Hardness |
| >=205 | >=520 | >=40 | HB <=187 HRB <=90 |
1. Material:
Carbon Steel:Q235,Q195,Q345,etc
200 series:201 202
300 series :301 304 304L 309S 310S 316L 317L 321 904L
400 series :409L 410 420 430 439 441
2. Size:
Length:5.8-12m
Width: 10-800mm or as customer required
Thickness: 1-3mm
We have a professional processing factory to cut stainless steel sheets.
3. Surface:
| No.4 | It has good gloss and fine lines on the surface. Processing technology: Polishing and tempering rolling of 2D products or 2B with 150 ~ 180 abrasive material (JIS R6002). |
| HL | It is silver-gray with hair streaks. Processing technology: Polish the 2D product or 2B product with a suitable size of abrasive material to make the surface appear continuous grain. |
| 8K | It is in a mirror state. Processing technology: 2D or 2B products are ground and polished to a mirror effect with a suitable abrasive material. |
| 2B | It is silvery white and better gloss and flatness than 2D surface. Processing technology: hot rolling + annealing shot peening pickling+ cold rolling + annealing pickling + quenching and tempering rolling. |
| BA | The surface gloss is excellent and has a high reflectivity, just like the mirror surface. Processing technology: hot rolling +annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenched and tempered rolling. |
| 1D | surface has discontinuous particles, also known as matte. Processing technology: hot rolling + annealing shot peening pickling +cold rolling + annealing pickling. |
| 2D | It is slightly shiny silvery white. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing
pickling. |
| No.3 | has better gloss and rough surface. Processing technology: Polishing and tempering rolling of 2D products or 2B with 100 ~ 120
abrasive materials (JIS R6002). |
| SB | The surface is smooth, the texture is clear, the texture is delicate, the appearance is comfortable, and the taste is high-grade.It is widely praised by consumers especially in kitchen appliances. |
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You could also ask for other special treatment.We have a stainless steel processing factory in Wuxi.
4. Standard:
GB JIS ASTM EN DIN AISI
5. Packing:
Standard stainless steel shipping packaging or as customer required.
Product Tags:
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321 Stainless Steel Tubing Superheated Steam Pipes Images
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