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ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

Name: ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System
Brand: YUHONG
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Brand Name :	YUHONG
Model Number :	ASTM A335 P5 P9 P11 P22 Studded Tube
Certification :	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Payment Terms :	L/C,T/T
Delivery Time :	7 DAYS

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ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

What is a Studded Tube?

This is a specialized component designed for use in high-temperature and corrosive environments. Unlike finned tubes, which maximize convection surface area, studded tubes are primarily used to secure and protect refractory linings or to facilitate heating in certain furnace types.

Studded tubes are manufactured by welding a series of studs (pins) to the outer surface of a base tube. These studs act as anchors, securing the castable refractory material to the tube surface.

ASTM A335 P5 base tube, combined with studs made from compatible materials, creates a robust system for lining furnaces, boilers, and reactors.

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.

Type	Description	Base tube	Fin specification (mm)
Type	Type	O.D. (mm)	Fin pitch	Fin height	Fin thick
Welding	HFW 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

Alloy Steel Chemical Compositions

Grade	UNS Designation	Composition, %
Grade	UNS Designation	Carbon	Manganese	Phosphorus, max	Sulfur, max	Silicon	Chromium	Molybdenum
P1	K11522	0.10-0.20	0.30-0.80	0.025	0.025	0.10-0.50	--	0.44-0.65
P2	K11547	0.10-0.20	0.30-0.61	0.025	0.025	0.10-0.30	0.50-0.81	0.44-0.65
P5	K41545	0.15MAX	0.30-0.60	0.025	0.025	0.50MAX	4.00-6.00	0.45-0.65
P9	K90941	0.15MAX	0.30-0.60	0.025	0.025	0.25-1.00	1.00-1.50	0.44-0.65
P11	K11597	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	1.00-1.50	0.44-0.65
P12	K11562	0.05-0.15	0.30-0.61	0.025	0.025	0.5MAX	0.80-1.25	0.44-0.65
P15	K11578	0.05-0.15	0..30-0.60	0.025	0.025	1.15-1.65	--	0.44-0.65
P21	K31545	0.05-0.15	0.30-0.60	0.025	0.025	0.50MAX	2.65-3.35	0.80-1.06

Chemical Composition of ASTM A335 P5 Seamless Pipe

Grade	Chemical Composition(%)
Grade	C	Mn	P	S	Si	Cr	Mo
P5	≤0.015	0.30-0.60	≤0.025	≤0.025	≤0.50	4.00-6.00	0.45-0.65

Mechanical Properties of ASTM A335 P5 Seamless Pipe

Grade	Mechanical property
Grade	Tensile Strength(MPa)	Yield Strength(MPa)	Elongation(%)
P5	≥415	≥205	≥30

Applications

Studded tubes are essential in the most demanding, high-temperature industrial processes:

Petroleum refining:

Fluid catalytic cracking (FCC) units: Cyclones and plenums in reactors and regenerators.

Steam methane reformer (SMR) furnaces: Components of the radiant walls and roof of the furnace, where process tubes are exposed to intense flames.

Chemical processing: Used in ethylene cracking furnaces and other high-temperature reactors.

Power Generation:

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ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

Chemical Composition of ASTM A335 P5 Seamless Pipe

Mechanical Properties of ASTM A335 P5 Seamless Pipe

ASTM A335 studded tube

P5 P9 heat exchange tube

P11 P22 fin tube

ASTM A335 P5 P9 P11 P22 Studded Tube Heat Exchange System

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