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| Categories | Longitudinal Finned Tube |
|---|---|
| Brand Name: | YUHONG |
| Model Number: | ASTM A312 TP316L |
| Certification: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015 |
| Place of Origin: | CHINA |
| MOQ: | Depend the size of finned tubes, 50-100PC |
| Price: | 20-10000 USD |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 1000 tons/month |
| Delivery Time: | 70-90 days |
| Packaging Details: | Ply-wooden Case With Iron Frame |
| Product: | Fin Tubes or Finned Tube |
| Type: | Longitudinal Finned Tubes |
| Base Tubes Standard: | ASTM A312 |
| Material: | TP316L Base pipes and Stainless Steel Fins |
| Length: | According to clients' need |
| Size and details: | According to clients' need |
| Use: | Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, etc |
| Packing: | Ply-wooden Case With Iron Frame |
| Company Info. |
| YUHONG HOLDING GROUP CO., LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
| Attribute | Value |
|---|---|
| Product | Fin Tubes or Finned Tube |
| Type | Longitudinal Finned Tubes |
| Base Tubes Standard | ASTM A312 |
| Material | TP316L Base pipes and Stainless Steel Fins |
| Length | Custom according to client requirements |
| Size and details | Custom according to client requirements |
| Use | Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators |
| Packing | Ply-wooden Case With Iron Frame |
ASTM A312 TP316L welded longitudinal finned tubes with stainless steel fins are designed for high-temperature and corrosive service applications. These tubes feature seamless, straight-seam welded construction with automatic welding process and no filler metal addition.
All pipes are heat-treated at 1900°F [1040°C] and are free of scale and contaminating exogenous iron particles. Surface finishing options include pickling, blasting, or bright annealing with optional passivating treatment.
Each tube undergoes rigorous testing including: Transverse/Longitudinal Tension Test, Flattening Test, Grain Size Analysis, Flaring Test, Flange Test, Hardness Test, and Hydrostatic/Nondestructive Electric Test.
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| TP316L S31603 | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
For small diameter or thin wall tubes (less than 0.500 in. [12.7 mm] in outside diameter and less than 0.049 in. [1.20 mm] in wall thickness), a carbon maximum of 0.040% is required.
| Grade | Tensile Strength (min) | Yield Strength (0.2% Offset, min) | Elongation (min) |
|---|---|---|---|
| TP316L | 70ksi (485 MPa) | 25ksi (170 MPa) | 35% |
Longitudinal finned tubes are produced by resistance welding fins along the tube's length. The fins form a U-shaped channel where each leg creates a fin. Available in various materials including carbon/alloy steel, stainless steel (TP304, TP316L, TP321), and copper alloys (CuNi 70/30, CuNi 90/10).
Ideal for power stations and high-temperature equipment in oil industry applications including:
| Type | Description | Base tube O.D. (mm) | Fin pitch (mm) | Fin height (mm) | Fin thickness (mm) |
|---|---|---|---|---|---|
| Embedded | G-type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| Extruded | Single metal / Combined metal | 8-51 | 1.6~10 | <17 | 0.2-0.4 |
| Low fin tube / T-type | fin tube | 10-38 | 0.6~2 | <1.6 | ~0.3 |
| Bamboo tube / corrugated | tube | 16-51 | 8.0~30 | <2.5 | ~0.3 |
| Wound | L / KL / LL type fin tube | 16-63 | 2.1~5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type fin tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| H/HH type | fin tube | 25-63 | 8~30 | <200 | 1.5-3.5 |
| Studed | fin tube | 25-219 | 8~30 | 5~35 | φ5-20 |
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