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Finned Tube ASTM A335 P11 Alloy Steel Studded Fin 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 pipe 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 PIPE 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 PIPES 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.
