Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
Dellok YONGHUI TECH Co.,Ltd. Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
Add to Cart
DELLOK Welded Studded Fin Tube For Heat Exchange
About Us
Dellok(YONGHUI Radiating Pipe Manufacturing Co.,Ltd) was established in 2002, which is located in Nanjing, China.We joined HARBIN AIR CONDITIONING CO., LTD. in 2022 and became the most professional industry manufacturer in China. After many years of development, the company now has 66 million yuan in fixed assets, more than 200 employees, and 33 technical staffs. We have 4 aluminum processing production lines, with the annual processing capacity of more than 20,000 tons; And we have 5 tube-drawing production lines; 47 fintube production lines, 1 imported production line from American with the brand of McElroy , with the annual production capacity of 12 million meters the above.
Quality is the theme of eternal pursuit of winner.
Studded Tube Product Description:
The studs are welded to the tubes using electrical resistance welding, producing high quality welds. Studded tubes are mostly employed in preference to finned tubes in heat transfer systems in petrochemical plants, where the surface is exposed to very corrosive environment such as dirty gases or liquids. These tubes should be resistant to aggressive materials and must be cleaned frequently.
Studded Tube(Stainless Steel Welded Tube) Manufacturing Process:
The steel studs are automatically resistance welded to the tube, producing high quality forge welds. The welding process enables the combination of any grades for studs and tube: carbon, low alloy, stainless steels and high nickel alloys.
Studded Tube(Welded Stainless Tube) Advantages:
To increase the surface area of the tube and to protect tube surface from direct exposure to heat /corrosive environment.
Studding reduces the amount of bare pipes used in these processes. Heat transfer surface of one studded pipe is equivalent to surface of 4 to 10 bare pipes.
Use of studded tubes is ideal for processes/applications, where dirty fuels are used in harsh environments.
Studded Tube(Black Welded Pipe) Properties:
Manufacturing Process:- Electric Resistance Welding
Fin To Tube Bond:- Excellent
Heat Transfer Efficiency:- Excellent
Mechanical Resistance:- Excellent (Hence can be frequently cleaned with high pressure jets unlike other fin tubes. Thereby reducing down time and increasing overall life)
Corrosion Protection:- Gives excellent corrosion protection to the base tube since it entirely covers the base tube (except bare ends).
Temperature Range:- Depending on Properties of material of Fin (Stud) and Pipe
Studded Tube(Weld Galvanized Pipe) Applications:
High density crude oil is passed through studded tubes which are heated from outside. Liquefied product comes out from the other end, which now can be used for further processing.
At times, navy boilers also require studded tubes, with oval shaped studs welded on them. These are used for heating water in water tube boilers.
Studded Tube(Fin Tube) Specifications:
| Product Specification | ||
| Tube OD | 25~273 (mm) | 1”~10” (NPS) |
| Tube Wall Thk | 3.5~28.6 (mm) | 0.14”~1.1” |
| Tube Length | ≤25,000 (mm) | ≤82 ft |
| Stud Thk | 6~25.4 (mm) | 0.23”~1” |
| Stud Height | 10~35 (mm) | 0.4”~1.38” |
| Stud Pitch | 8~30 (mm) | 0.3”~1.2” |
| Stud Type | Cylindrical, Elliptical, Lens type | |
| Stud to tube surface angle | Vertical or Angular | |
| Material Combinations | ||
| Stud Material | C.S. (most common grade: Q235B) | |
| S.S. (most common grade are AISI 304, 316, 409, 410, 321,347) | ||
| A.S. | ||
| Tube Material | C.S. (most common grade: A106 Gr.B) | |
| S.S. (most common grade are TP304,316, 321, 347) | ||
| A.S. (most common grade are T/P5,9,11,22,91) | ||
| Type of Service | High temperature | |
Product Categories : Studded Tube
FAQ
Q1: Are you trading company or manufacturer?
A: We are manufacture factory and we can accept OEM order. Welcome to visit our factory and check our products.
Q2: Can I have a sample ?
A: Yes, welcome to place sample order to test and check quality. Mixed samples are also OK.
Q3: What is your the lead time for production?
A: Generally Sample needs 1-3 days, mass production needs 15-30 days, also depends on your request.
Q4: What is the warranty for your products?
A :We provide one year warranty for the products.
Q5: What payment terms do you accept?
A :Trade assurance,TT,Western Union.