Description
Product name: Pin Tube, Studded Tube, Stud Pipe
Base tube material: stainless steel,carbon steel, alloy steel
Base pipe OD: 60 mm to 200 mm
Stud height: 12.7mm to 63.5mm
Stud pitch: As customer's request.
End: Plain Ends, Beveled Ends, or as Customer's request.
Bare tube length on both side: As Customer's request.
Studded tubes are made by resistance welding specially formed studs (round pins) arranged in rows around the tube. Pin tubes are available in a variety of sizes and shapes. Also known as nailhead pipe. Stud tubes have high heat transfer efficiency. The heat exchange efficiency is equivalent to 2-3 times of the bare tube. The mechanical bond is very strong, so it can be used where extreme mechanical loads, stresses, etc. are applied during processing or cleaning. These stud pipes can be used in air coolers and heat exchangers etc. and are preferred in industries such as petrochemical refineries, power plants, chemical industry and steel mills etc.
Studded Pipe Usages
Studded pipes high resistance in the harsh environments, such as sections of Sulfuric Acid atmospheres, makes it very useful for the following industries：
- process heat recovery of the petrochemical industry
- convection ovens,vacuum generators for chemical processing
- petroleum applications
Base Tube Material Grade:
A335 P1,P5,P9,P11, A213 T9,T11,T22,TP304,TP316/316L,TP321
A106GrB,A210 Gr A1, A210 GrC,ASME SA192/ASTM A192
ASME SA213/ASTM A213 TP304/304L,TP316/TP316L,TP321,TP310S,TP317
Studs Material Grade:
Carbon steel: ASTM A510 grade 1005 to 1010.
Stainless steel: AISI 304,316,410,347,321. ASTM A193 Grade: B6, B6X, B8, B8a, B8M, B8C. Cr-Mo alloy etc.
If you have any Inquiry, please don't hesitate to contact us immediately,Email:sales@union-steels.com
Specification
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Sr. No
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Particulars
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Range
|
|
1
|
Base Tube Material
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Stainless Steel, Carbon Steel, Alloy Steel, Titanium , Copper, Duplex Stainless Steel, & Inconel etc. (all material in the theoretical limit)
|
|
2
|
Base Tube Outside Diameter
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60 mm to 200 mm
|
|
3
|
Base Tube Thickness
|
3 mm to 12.70mm Above
|
|
4
|
Base Tube Length
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2000 mm Min To 15000 mm
|
|
5
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Stud Material
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Carbon Steel/Stainless Steel/Alloy Steel
|
|
6
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Stud Thickness
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6mm to 16mm
|
|
7
|
Stud Density
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15.88mm or 63 Studs Per Plate Per Meter (Can Be Customized to Clients Requirements)
|
|
8
|
Stud Height
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12.7mm to 63.5mm
|
|
9
|
Bare Ends
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As per Client Requirement
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Studded Pipe Size And Material
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Tube O.D.
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25~355.6 (mm)
|
1”~14”(NPS)
|
|
Tube Wall Thk.
|
3.5~28.6 (mm)
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0.14”~1.1”
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Tube Length
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≤25,000 (mm)
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≤82 ft
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|
Stud Dia.
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6~25.4 (mm)
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0.23”~1”
|
|
Stud Height
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10~50.8 (mm)
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0.4”~2”
|
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Stud Pitch
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8~30 (mm)
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0.3”~1.2”
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Stud Shape
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Cylindrical, Elliptical, Round, Lens type
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|
Stud to Tube Surface Angle
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Vertical, Angular, Staggered rows
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|
Stud Material
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C.S. (most common grade is Q235B)
S.S. (most common grade are AISI 304, 316, 409, 410, 321,347 )
A.S.
|
|
Tube Material
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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.
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Standard
The Stud Fin Tubes / Stud Fin Pipes can be supplied with EN 10204 EN 3.1 and EN 3.2 certifications. We can provide Third Party Inspection from any reputed inspection agency.
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, alloy, stainless steels and high nickel alloys. Alloy steel pipes are stress-relieved after studding, according to the relevant specifications for the class and grade of steel used.
Packing
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