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Contact name:Jikin Cai
Yuhong Group Co.,Ltd |
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ASTM A312 TP317/317L Seamless Tube with 100% ET,UT for Boiler / Heat Exchanger Application
The stainless steel 317L U Tube is a special type of tube manufactured particularly for heat exchangers. The tubes are made in U shape and are used in repeating rows in the heat exchanger applications. The material has nickel, chromium, carbon, manganese, phosphorus, silicon, sulfur and molybdenum in its composition. It has an excellent corrosion resistance compared to other stainless steels, alloy 317L is non-magnetic in the annealed condition. It cannot be hardened by heat treatment.
Stainless steel TP317L is a low carbon version of TP317 stainless steel. It has the same high strength and corrosion resistance as 317 steel but can produce stronger welds due to the low carbon content.
| Standard | UNS | WERKSTOFF NR. |
| SS 317 | S31700 | 1.4449 |
| SS 317L | S31703 | 1.4438 |
Mechanical Properties of ASTM A213 TP317L Stainless Steel Tube
| Grade | Density | Melting Point | Tensile Strength(Mpa) | Yield Point(Mpa) | Elongation(%) | Hardness |
| 317L | 8.0g/cm³ | 1454 °C (2650 °F) | 515 | 205 | 35 | 95 |
Chemical Composition of ASTM A213 TP317L Stainless Steel Tubes
| Grade | C | Mn | P | S | Si | Ni | Cr | Mo |
| 317 | 0.08 | 2.00 | 0.040 | 0.030 | 1.0 | 11-14 | 18-20 | 3.0-4.0 |
| 317L | 0.03 | 2.00 | 0.040 | 0.030 | 1.0 | 11-15 | 18-20 | 3.0-4.0 |
Physical Properties (Room Temperature) of ASTM A213 TP317L
Stainless Steel Tubes
| Specific Heat (0-100°C) | Thermal Conductivity | Thermal Expansion | Modulus Elasticity | Electrical Resistivity | Density |
| 500 | 14.6 | 16.5 | 193 | 7.4 | 7.99 |
| J.kg-1.°K-1 | W.m -1.°K-1 | mm/m/°C | GPa | μohm/cm | g/cm3 |
Some of the quality tests carried out by us includes
| Corrosion Test | Conducted only when specially requested by the client |
| Chemical Analysis | Test done as per required quality standards |
| Destructive / Mechanical Testing | Tensile | Hardness | Flattening | Flare |
| Eddy Current Testing | Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System |
| Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s . |
| Air Under Pressure Test | To check any evidence of air leakage |
| Visual Inspection | After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
Applications
1. Flue gas desulfurization scrubber systems
2. Chemical and petro-chemical processing equipment
3. Pulp and paper plants
4. Food processing equipment
5. Textile equipment
6. Boiler Tube
7. Heat Exchanger Tube
