YUHONG HOLDING GROUP CO., LTD
| Payment Terms | TT, LC |
| Supply Ability | 1000 tons/month |
| Delivery Time | 30-50 days |
| Packaging Details | Ply-wooden Case With Iron Frame |
| Product | Fin Tubes or Finned Tube |
| Type | Studded Tubes |
| Studded Tubes Standard | ASTM A312 |
| Studded Tubes Material | TP347H Base Pipes and SS Studs |
| Studded Tubes Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, etc |
| Studded Tubes Packing | Ply-wooden Case With Iron Frame |
| Brand Name | Yuhong |
| Model Number | ASTM A312 TP347H Studded Tubes |
| Certification | ABS, BV, DNV, CCS, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | TT, LC | Supply Ability | 1000 tons/month |
| Delivery Time | 30-50 days | Packaging Details | Ply-wooden Case With Iron Frame |
| Product | Fin Tubes or Finned Tube | Type | Studded Tubes |
| Studded Tubes Standard | ASTM A312 | Studded Tubes Material | TP347H Base Pipes and SS Studs |
| Studded Tubes Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Evaporators, etc | Studded Tubes Packing | Ply-wooden Case With Iron Frame |
| Brand Name | Yuhong | Model Number | ASTM A312 TP347H Studded Tubes |
| Certification | ABS, BV, DNV, CCS, LR | Place of Origin | China |
| High Light | ASTM A312 TP347H Studded Tubes ，Industrial Process Heating Studded Tubes | ||
ASTM A312 TP347H Stainless Steel Studded Tubes For Industrial Process Heating
ASTM A312 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. ASTM A312 TP347H (stabilized austenitic stainless steel with Nb/Cb addition) is a high-temperature, corrosion-resistant alloy widely applied in industrial process heating systems due to its creep resistance, oxidation resistance, and strength at elevated temperatures. ASTM A312 TP347H stainless steel pipes are suitable for refinery & chemical heating processes with corrosive gases. With Niobium (Nb) element, can prevents sensitization & intergranular corrosion in weld zones.
In a short, A312 TP347H stainless steel pipes are ideal for high-temperature process heating in petrochemical, refining, power, and chemical industries,etc., especially where creep resistance, oxidation resistance, and weld stability are critical.
Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr | Ni | Co |
| TP347H | 0.04-0.10 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-13.0 | J |
J The columbium content shall be not less than eight times the carbon content and not more than1.0%.
Mechanical Properties
| Cold Finished | Hot Finished | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| 2000°F [1100°C] | 1925°F [1050°C] | 75ksi (515 MPa) | 30ksi (205 MPa) |
Studded fin tubes significantly increase the surface area for heat transfer compared to other finned tubes. Studded fin tubes are made by welding specially formed studs (round pins) onto the surface of a base tube. Typically formed with materials such as carbon steel, stainless steel, alloy or copper, providing durability and resistance to corrosion.
A312 TP347H stainless steel studded fin tubes are used in high-temperature, corrosive, and high-pressure process heating systems where standard carbon steel or lower-grade stainless steels fail. With niobium (Nb) element-stabilized austenitic structure, which provides excellent creep resistance, oxidation resistance, and mechanical strength at elevated temperatures (up to 900°C / 1652°F).
Primary Applications in Industrial Process Heating
Petrochemical & Refinery Heaters
Cracking Furnaces (Ethylene, Steam Crackers)
Hydrogen Reformers & Hydroprocessing Heaters
Power & Energy (Waste Heat Boilers, HRSGs)
Superheaters & Reheaters (TP347H handles high-pressure steam >550°C).
Exhaust Gas Ducting in gas turbine combined cycles.
Chemical Process Heating
High-Temperature Reactors & Thermal Oil Heaters
Syngas & Ammonia Production Heaters
Food, Pharma & Pulp/Paper Industry
Sterilization Systems & High-Temp Fluid Transfer
Recovery Boilers in Paper Mills (resists corrosion from black liquor).
Specifications
| Type | Description | Base tube | Fin specification (mm) | ||
| 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 | |
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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