STAINLESS STEEL TUBE
Austenitic stainless steel pipe and tubing used for a variety of reasones, to resist corrosions and oxidation, to resist high temperature, for low maintenance costs, and to maintain the purity of materials which come in contact with spotless. the inherent characterisrics of stainless steel perm it the design of thin wall tubing system without fear of early failure due to corrodion. stainless steel is not a specific material, it is the name given to a group of corrosion-resistant steels containing a chromium, varying additions of nickel, molybdnum and other elements may be also be present, the mechanical properties and behaviour depends upon its composition. it is am ong the most highly corrosion-resistent materisls availlable to be used for, oil, chemical and petro-chemical industry, plant, construciton and engineered products.
DETAIL
● Standard Material Specification of KS, JIS, ASTM & DIN
| Steel grade | Standard | Chemical composition(max) | Mechanical(min.) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Min | P | S | Ni | Cr | Mo | Yeld point strength (N/㎟) |
Tensile strength (N/㎟) |
Elongation (%) |
||
| 304 | KS,JIS | 0.080 | 1,000 | 2,000 | 0.040 | 0.030 | 8.0~11.0 | 18.0~20.0 | - | 206 | 520 | 35 |
| ASTM | 0.080 | 0.750 | 2,000 | 0.040 | 0.030 | 8.0~11.0 | 18.0~20.0 | - | 206 | 515 | 35 | |
| DIN | 0.070 | 1,000 | 2,000 | 0.045 | 0.030 | 8.5~10.5 | 17.0~19.0 | 195 | 500-720 | 40 | ||
| 304 L | KS,JIS | 0.030 | 1,000 | 2,000 | 0.040 | 0.030 | 9.0~13.0 | 18.0~20.0 | - | 177 | 481 | 35 |
| ASTM | 0.035 | 0.750 | 2,000 | 0.040 | 0.030 | 8.0~12.0 | 18.0~20.0 | - | 170 | 485 | 35 | |
| DIN | 0.030 | 1,000 | 2,000 | 0.045 | 0.030 | 10.0~12.5 | 18.0~20.0 | 180 | 460-690 | 40 | ||
| 316 | KS,JIS | 0.080 | 1,000 | 2,000 | 0.040 | 0.030 | 10.0~14.0 | 16.0~18.0 | 2.0~3.0 | 206 | 520 | 35 |
| ASTM | 0.080 | 0.750 | 2,000 | 0.040 | 0.030 | 10.0~14.0 | 16.0~18.0 | 2.0~3.0 | 205 | 515 | 35 | |
| DIN | 0.070 | 1,000 | 2,000 | 0.045 | 0.030 | 10.0~13.5 | 16.5~18.5 | 2.0~2.5 | 205 | 510-710 | 40 | |
| 316 L | KS,JIS | 0.030 | 1,000 | 2,000 | 0.040 | 0.030 | 12.0~16.0 | 16.0~18.0 | 2.0~3.0 | 177 | 481 | 35 |
| ASTM | 0.035 | 1,000 | 2,000 | 0.045 | 0.030 | 10.0~15.0 | 16.0~18.0 | 2.0~3.0 | 170 | 485 | 35 | |
| DIN | 0.030 | 1,000 | 2,000 | 0.045 | 0.030 | 11.0~14.0 | 16.5~18.5 | 2.0~2.5 | 190 | 490-690 | 40 | |
● Specification
- STS 304(L), 316(L)
- O.D 6mm~15mm
- O.D 1/4"~O.D 1/2"
- 0.5mmT~2.0mmT
- 100M~600M
● Recommendable Working Pressure for Welded Tube
| O.D(mm) | Wall Thickness(mm) | Unit :Bar | ||||
|---|---|---|---|---|---|---|
| 0.5 | 0.8 | 1.0 | 1.2 | 1.5 | 2.0 | |
| 6 | 170 | 275 | 340 | - | - | - |
| 8 | 130 | 205 | 255 | 310 | - | - |
| 10 | 105 | 165 | 205 | 245 | 310 | - |
| 12 | - | 135 | 170 | 205 | 255 | 340 |
● Test Pressure(Min.) in Calculation
The test pressure or stress shall be datermined by the following equation:
p=25t/D or 220. 6t/D
- p - hydrostatic test pressure in Mpa [ 1=Map=10Bar ]
- S - 50% of the specified minimum yield point / strength in Mpa [ 1Map=1N/㎟ ]
- t - specified wall thickness (mm)
- D - specified outside diameter (mm)
● Use
Hydraulic & Pneumatic remote control and monitoring system
- - Ballast valve operation system
- - Gas deteciton system
- - Level remote and draft measuring system
- - Vapour emission control system
Oil platform upright control system
Hight temperature and general corrosive service
● Advantage
Physical & chemical protecion
- - Corrosion resistance & heat resistance
- - Easy forming & welding
- - High impact resistance & high durability
