Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C AT SIGHT |
| Supply Ability | 5000 pcs per month |
| Delivery Time | Depends on quantity |
| Packaging Details | Iron Frame Case Bundle with plastic Cap |
| Type | Studded Fin Tube |
| Application | Superheaters and Economizers/Industrial Heating and Cooling |
| Tube material | A335 P11 or other material |
| Fin material | Alloy steel / Carbon steel / Stainless steel |
| Tube length | 18 meters max |
| Rust proof coating | Black paint |
| Brand Name | YUHONG |
| Model Number | A335 P11 STUDDED FIN TUBE |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, L/C AT SIGHT | Supply Ability | 5000 pcs per month |
| Delivery Time | Depends on quantity | Packaging Details | Iron Frame Case Bundle with plastic Cap |
| Type | Studded Fin Tube | Application | Superheaters and Economizers/Industrial Heating and Cooling |
| Tube material | A335 P11 or other material | Fin material | Alloy steel / Carbon steel / Stainless steel |
| Tube length | 18 meters max | Rust proof coating | Black paint |
| Brand Name | YUHONG | Model Number | A335 P11 STUDDED FIN TUBE |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | China |
| High Light | 20mm od studded tube ，carbon steel studded tube ，petrochemical equipment studded tube | ||
Overview
The studded fin tube (nail head tube) is a cylindrical needle arranged in a square or hexagonal shape and welded evenly on the surface of the heat exchange tube. An efficient and energy-saving needle tube heat exchange tube group is composed of four square or hexagonal reinforced heat exchange nail head tubes assembled and welded.
Because the needle rib of the stud fin tube is a cantilever structure with a compact structure, it oscillates under the impact of airflow, making it difficult for the soot to accumulate. Combined with the intense turbulent erosion of flue gas, the heat transfer efficiency of the stud fin tube heat exchange element is high, and it has strong self cleaning ability.
In the petrochemical industry, stud fin tubes are widely used. Especially in the convection chamber of a tubular heating furnace, in order to enhance the heat transfer effect outside the tube, heat transfer components often use stud fin tubes. The stud fin tube can improve the heat transfer coefficient of the flue gas side, and the stud fin tube area is 2-3 times that of the bare tube. Because of the application of the stud fin tube, the same heat intensity as the radiation can be obtained under the condition of reasonable design.
Application of Stud Fin Tube
The application of Stud Fin Tube in convection chamber of heating furnace in petrochemical industry and other industries can improve the heat transfer coefficient at the flue gas side. The area of Stud Fin Tube is 2-3 times that of bare tube. Because of the application of nail tube, the same heat intensity as radiation can be obtained under reasonable design
Welding method of Stud Fin Tube
Stud Fin Tube equipment adopts resistance welding method, and the welding process is controlled by PLC program. The feed motor and indexing motor are controlled by brake motor. The human-machine interface can set the number of nail heads, indexing parameters, and compensation coefficient, and ensure product quality and accuracy according to process requirements
Technical characteristics
Market and Economic Benefit Forecast
Stud Fin Tubes are the main components of chemical equipment and heat exchange equipment. The production, manufacturing, or maintenance of the above-mentioned equipment require nail head pipes. Non burr welding is an advanced and stable process in the manufacturing of nail head pipes, with effective and promising application prospects.
P11 Chemical Composition
| Alloy Steel P11 | C | Cr | Mn | Mo | P | S | Si |
|---|---|---|---|---|---|---|---|
| 0.05 – 0.15 | 1.00 – 1.50 | 0.30 – 0.60 | 0.44 – 0.65 | 0.025 max | 0.025 max | 0.50 – 1.00 |
P11 Mechanical Properties
| Tensile Strength, MPa | Yield Strength, MPa | Elongation |
|---|---|---|
| 415 min | 205 min | 30 min |
A335 P11 Pipe Heat Treatment Requirements
| Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering |
|---|---|---|---|
| P11 | Full or Isothermal Anneal |
|
|
| Normalize and Temper | ***** | 1200 [650] |
A335 P11 Pipe Tensile Requirements
| A335 P11 Seamless Pipe | |
|---|---|
| Tensile Strength, min., psi | |
| ksi | 60 |
| MPa | 415 |
| Yield Strength, min., psi | |
| ksi | 30 |
| MPa | 205 |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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