321 Stainless Steel Seamless Pipe Tube
Product Details
Introduction
321 stainless steel, Ni-Cr-Mo-type austenitic stainless steel, its performance with a 304 stainless steel plate is very similar, but due to the addition of titanium, it has a better intergranular corrosion resistance and high temperature strength. The addition of titanium to make it effective control of the formation of chromium carbide .
321 stainless steel with Ti as a stabilizing element exists, but it is the creep strength of steel at high temperatures much better than 316L.
Technical Parameter
Seamless steel pipe
Steel ingots or solid tube through the perforation of the capillary, and then by hot-rolled, cold-rolled or cold dial made. with hollow cross-section, a large number of pipes for the transmission fluid. is generally molten state of the molten steel through the annular slit back out and then processed by the tensile molding process, so there is no weld. In terms of performance, especially pressure on the ability of welded steel pipe has greatly improved, it is often used for high-voltage equipment. Such as hydraulic equipment, piping connections.
Welded pipe
A steel or steel plate bending deformation into a circular and then welded into the surface of the steel pipe joints. Welded pipe used in the blank is steel or strip.The welding seam of welded steel pipe is the weak link, and the quality of weld is also the main factor affecting its overall performance. Welded steel pipe in the north of the China people living in general have had water pipes or heating pipes in the winter was the experience of cold explosion, where the explosion is generally weld.
Application
321: High inter-granular corrosion resistance of chemical, coal, oil field open machine, heat treatment difficulties of building heat-resistant parts
1. Oil and gas burning pipeline
2. Engine exhaust pipe
3. Shell of the boiler, heat exchangers, heating furnace part
4. Silencer for diesel parts
5. Boilers and pressure vessels
6. Chemical transportation vehicle
7. Expansion joint
8. Furnace pipes and drying machines for spiral welded pipe
321 stainless steel, Ni-Cr-Mo-type austenitic stainless steel, its performance with a 304 stainless steel plate is very similar, but due to the addition of titanium, it has a better intergranular corrosion resistance and high temperature strength. The addition of titanium to make it effective control of the formation of chromium carbide .
321 stainless steel with Ti as a stabilizing element exists, but it is the creep strength of steel at high temperatures much better than 316L.
Technical Parameter
| 321 stainless steel | |||||||
|---|---|---|---|---|---|---|---|
| Standard | Grade |
Chemical Composition % |
Technique |
Yied strength Mpa |
Tensile strength Mpa |
Elongation % | Hardness |
| GB | 1Cr18Ni9Ti |
C≤0.08，Mn≤2.00， Si≤0.75，P≤0.045， S≤0.0.30，Cr 17.0~19.0, Ni 9.0~12.0，N≤0.10， Ti〔5x﹙C+N﹚〕~0.70 |
hot /cold rolled | ≥205 | ≥518 | ≥40 | HV≤200 |
| USA | 321 | ||||||
| JIS | SUS321 | ||||||
| German | 1.4541 | ||||||
| Nominal diameter | Outside (mm) | Nominal wall thickness | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| SCH5 S | SCH1 0S | SCH2 OS | |||||||||
| N.B | NPS | Wall (mm) |
WEIGHT （kg/m） |
Wall (mm) |
WEIGHT （kg/m） |
Wall (mm) |
WEIGHT （kg/m） |
||||
| Grade | Grade | Grade | |||||||||
| TP304 TP304L | TP316 TP316L | TP304 TP304L | TP316 TP316L | TP304 TP304L | TP316 TP316L | ||||||
| 8 | 1/4" | 13.72 | 1.65 | 0.5 | 0.5 | 2.24 | 0.64 | 0.64 | |||
| 10 | 3/8" | 17.15 | 1.65 | 1.65 | 0.64 | 2.31 | 0.85 | 0.86 | |||
| 15 | 1/2" | 21.34 | 1.65 | 0.81 | 0.81 | 2.11 | 1.01 | 1.02 | 2.77 | 1.28 | 1.29 |
| 20 | 3/4" | 26.67 | 1.65 | 1.03 | 1.03 | 2.11 | 1.29 | 1.3 | 2.87 | 1.7 | 1.71 |
| 25 | 1" | 33.4 | 1.65 | 1.31 | 1.31 | 2.77 | 2.11 | 2.13 | 3.38 | 2.53 | 2.54 |
| 32 | 1 1/4" | 42.16 | 1.65 | 1.67 | 1.68 | 2.77 | 2.72 | 2.74 | 3.56 | 3.42 | 3.45 |
| 40 | 1 1/2" | 48.26 | 1.65 | 1.92 | 1.93 | 2.77 | 3.14 | 3.16 | 3.68 | 4.09 | 4.11 |
| 50 | 2" | 60.33 | 1.65 | 2.41 | 2.43 | 2.77 | 3.97 | 4 | 3.91 | 5.5 | 5.53 |
| 65 | 2 1/2" | 73.03 | 2.11 | 3.73 | 3.75 | 3.05 | 5.32 | 5.35 | 5.16 | 8.72 | 8.78 |
| 80 | 3" | 88.09 | 2.11 | 4.56 | 4.59 | 3.05 | 6.52 | 6.56 | 5.49 | 11.4 | 11.5 |
| 90 | 3 1/2" | 101.6 | 2.11 | 5.23 | 5.23 | 3.05 | 7.49 | 7.54 | 5.74 | 13.7 | 13.8 |
| 100 | 4" | 114.3 | 2.11 | 5.9 | 5.9 | 3.05 | 8.45 | 8.51 | 6.02 | 16.2 | 16.3 |
| 125 | 5" | 141.3 | 2.77 | 9.56 | 9.56 | 3.4 | 11.7 | 11.8 | 9.55 | 22 | 22.1 |
| 150 | 6" | 168.28 | 2.77 | 11.4 | 11.4 | 3.4 | 14 | 14.1 | 7.11 | 28.5 | 28.7 |
| 200 | 8" | 219.08 | 2.77 | 14.9 | 14.9 | 3.76 | 20.2 | 20.3 | 8.18 | 43 | 43.2 |
| 250 | 10" | 273.05 | 3.4 | 22.8 | 22.8 | 4.19 | 28.1 | 28.2 | 9.27 | 60.9 | 61.3 |
| 300 | 12" | 323.85 | 3.96 | 31.6 | 31.6 | 4.57 | 36.3 | 36.6 | 9.52 | 74.5 | 75 |
| 350 | 14" | 355.6 | 3.96 | 34.7 | 34.7 | 4.78 | 41.8 | 42 | |||
| 400 | 16" | 406.4 | 4.19 | 42 | 42 | 4.78 | 47.8 | 48.1 | |||
| 450 | 18" | 457.2 | 4.19 | 47.3 | 47.3 | 4.78 | 53.9 | 54.2 | |||
| 500 | 20" | 508 | 4.78 | 59.9 | 59.9 | 5.54 | 69.3 | 69.8 | |||
| 550 | 22" | 558.8 | 4.78 | 66 | 66 | 5.54 | 76.4 | 76.8 | |||
| 600 | 24" | 609.6 | 5.54 | 83.4 | 119.5 | 6.35 | 95.4 | 96 | |||
| 750 | 30" | 762 | 6.35 | 119.5 | 119.5 | 7.92 | 148.8 | 149.7 |
|
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Seamless steel pipe
Steel ingots or solid tube through the perforation of the capillary, and then by hot-rolled, cold-rolled or cold dial made. with hollow cross-section, a large number of pipes for the transmission fluid. is generally molten state of the molten steel through the annular slit back out and then processed by the tensile molding process, so there is no weld. In terms of performance, especially pressure on the ability of welded steel pipe has greatly improved, it is often used for high-voltage equipment. Such as hydraulic equipment, piping connections.
Welded pipe
A steel or steel plate bending deformation into a circular and then welded into the surface of the steel pipe joints. Welded pipe used in the blank is steel or strip.The welding seam of welded steel pipe is the weak link, and the quality of weld is also the main factor affecting its overall performance. Welded steel pipe in the north of the China people living in general have had water pipes or heating pipes in the winter was the experience of cold explosion, where the explosion is generally weld.
Application
321: High inter-granular corrosion resistance of chemical, coal, oil field open machine, heat treatment difficulties of building heat-resistant parts
1. Oil and gas burning pipeline
2. Engine exhaust pipe
3. Shell of the boiler, heat exchangers, heating furnace part
4. Silencer for diesel parts
5. Boilers and pressure vessels
6. Chemical transportation vehicle
7. Expansion joint
8. Furnace pipes and drying machines for spiral welded pipe
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