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| Brand Name: | YUHONG |
| Model Number: | ASTM A179 |
| MOQ: | Depend the size of finned tubes, 50-100PC |
| Price: | 20-10000 USD |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 1000 tons/month |
| Attribute | Value |
|---|---|
| Product | Fin Tubes or Finned Tube |
| Type | Longitudinal Finned Tubes |
| Base Tubes Standard | ASTM A179 |
| Material | A179 Base pipes and CS GB/T13237 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 |
Longitudinal finned tubes are produced by resistance welding fins along the long direction of the tube. The fins first form a U-shaped channel so that each leg of the U-shape forms a fin. The channel is cut to the appropriate length, then oriented along the length of the tube and resistance welded in place. The channels are pairs of soldered, diametrically opposed, so the number of fins specified must be a multiple of four.
Regular base pipe/tube material: carbon / alloy steel (A106, A333, A179, A335 P5, P22, P9, etc.), stainless steel TP304, TP316L, TP321, etc., copper alloy CuNi 70/30, CuNi 90/10, etc and other material.
Regular fins material: carbon steel, stainless steel, alloy steel, copper alloy, etc.
This specification covers minimum-wall-thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. This specification covers tubes 1/8 to 3 in. [3.2 to 76.2 mm], inclusive, in outside diameter.
| Grade | C | Mn | P | S |
|---|---|---|---|---|
| A179 | 0.06-0.18 | 0.27-0.63 | 0.035 | 0.035 |
| Grade | Tensile Strength, min | Yield Strength (0.2% Offset, min) | Elongation min. | Hardness, max |
|---|---|---|---|---|
| A179 | 47ksi (325 MPa) | 26ksi (180 MPa) | 35% | Rockwell: 72 HRB |
Generally applicable to power stations or large high-temperature old equipment in the oil industry:
| Type | Description | Base tube O.D. (mm) | Fin pitch | Fin height | Fin thick |
|---|---|---|---|---|---|
| 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 |
