Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A335 P11 Alloy Steel Studded tube For Heat Exchanger
What is a Studded Tube?
Studded tubes are a type of metal tubes. These tubes have studs welded onto the metal tube. These studs are arranged in a specific formation throughout the length of the tube. They are often used in boilers and refineries. As they increase the surface area for higher heat transfer they are used for reheating.
Studded Tube
| Product: | studded tubes, welded stud tubes,studded steel tubes,studded fin tubes |
| Application: | , generally in furnaces and boilers where the surface is exposed to a very corrosive environment and where very dirty gas streams require frequent or aggressive cleaning. |
| Size: | OD: 38 mm ~219 mm |
| WT: 4.0 mm ~20 mm /Tube Length (Mtr) :≤ 15Mtrs | |
| Fin Height: 6.0 mm ~ 38 mm | |
| Base Tube(fin) Material: | Carbon Steel |
|
| Alloy Steel |
|
| Stainless Steel |
Studded tube size and material
| Tube O.D.: | 25~355.6 (mm) | 1”~14”(NPS) |
| Tube Wall Thk.: | 3.5~28.6 (mm) | 0.14”~1.1” |
| Tube Length: | ≤25,000 (mm) | ≤82 ft |
| Stud Dia.: | 6~25.4 (mm) | 0.23”~1” |
| Stud Height: | 10~50.8 (mm) | 0.4”~2” |
| Stud Pitch: | 8~30 (mm) | 0.3”~1.2” |
| Stud Shape: | Cylindrical, Elliptical, Round, Lens type | |
| Stud to tube surface angle: | Vertical, angular, staggered rows | |
| Stud Material: | C.S. (most common grade is Q235B) S.S. (most common grade are AISI 304, 316, 409, 410, 321,347 ) A.S. | |
| Tube Material: | C.S. (most common grade is 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 ) | |
| * This table is used as a general guide to our capabilities, please call us for any other customized cases. | ||
ASTM A335 P11 TUBE CHEMICAL COMPOSITION
| Grade | C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % |
| ASTM A335 P11 | 0.015 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50 max | 4.00-6.00 | 0.45-0.65 |
ASTM A335 P11 TUBE MECHANICAL PROPERTIES
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
| 415 min | 205 min | 30 min |
Application
The nail head tube group is especially suitable for compact waste heat boilers, oil-fired, gas-fired boilers and oil heaters. Under the same heat exchange, its weight and external dimensions are greatly reduced. The anti-fouling performance of the nail head tube group is greatly improved compared with other conventional enhanced heat transfer boiler tubes. In the case of low flue gas temperature, the nail head tube can still recover waste heat economically, and has broad application prospects in heat exchange and energy saving projects.
