We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
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The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
application: steel studded tubes are used instead of finned tubes for heat transfer in the petrochemical industry, 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
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.
how to produce studded pipe?
studded pipe is made by electrical resistance stud welding equipment, which specially formed studs in rows around the tube. the studs can be supplied in a variety of sizes and shapes. the pattern in which the studs are arranged on the tube can also be varied by changing the number of studs per row around the tube, the spacing between the rows, and whether the studs in adjacent rows are offset. it is also possible to apply studs to just one side of the tube, or to apply several different height studs in the same row. the studs are hand loaded into the electrodes and then automatically welded. the welding process allows for the combination of any stud and tube grade, including carbon, alloy, stainless steels, and high nickel alloys. after studding, alloy steel pipes are stress-relieved in accordance with the relevant specifications for the steel class.
features of a studded tube
it occupies less space and is, therefore, compact.
highly durable.
preferred over finned tubes as they act as heat transfer systems.
uses of studded tubes
steel studded tubes are used instead of finned tubes for heat transfer in the petrochemical industry, 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.
|
base tube o.d |
base tube thickness (mm) |
fin height |
tube length (mtr) |
|
（mm） |
（mm） |
||
|
38 mm ~219 mm |
4.0 mm ~20 mm |
6.0 mm ~ 38 mm |
≤ 15mtrs |
|
base tube material |
fin material |
|
|
|
carbon steel ,alloy steel ,stainless steel |
carbon steel ,alloy steel , |
|
|
|
tube o.d.: |
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 dia.: |
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 shape: |
cylindrical, elliptical, lens type |
|
|
stud to tube surface angle: |
vertical or angular |
|
|
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. |
||
|
technical range |
||
|
tube od(mm) |
tube thickness(mm) |
tube height(mm) |
|
60-219 |
4-20 |
10-38 |
|
material & length range |
||
|
tube |
stud |
tube length(m) |
|
a106grb, a335 p5/p9 a204 tp304 |
cs ansi 410, ss304 5%cr-1/2mo |
1-15 |
|
technical range |
||
|
tube od(mm) |
tube thickness(mm) |
tube height(mm) |
|
60-219 |
4-20 |
10-38 |
|
material & length range |
||
|
tube |
stud |
tube length(m) |
|
a106grb, a335 p5/p9 a204 tp304 |
cs ansi 410, ss304 5%cr-1/2mo |
1-15 |
when an electric current is passed at the contact point of the studs and the tube, this, in turn, provides resistance.
the resistance causes heat to be producedwhich is then used for welding.
maximum heat is generated at the interface of the tube and the studs due to maximum resistance.
no external heat source is used to weld the studs and tubes together.
the pressure is used to forge the two together instead.
hence, they are extremely useful in the process that works under high temperature and pressure.
there are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and sea transportation security.our packing can meet any needs of the customers.
|
base tube o.d |
base tube thickness (mm) |
fin height |
tube length (mtr) |
|
（mm） |
（mm） |
||
|
38 mm ~219 mm |
4.0 mm ~20 mm |
6.0 mm ~ 38 mm |
≤ 15mtrs |
|
base tube material |
fin material |
|
|
|
carbon steel ,alloy steel ,stainless steel |
carbon steel ,alloy steel , |
|
|
|
tube o.d.: |
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 dia.: |
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 shape: |
cylindrical, elliptical, lens type |
|
|
stud to tube surface angle: |
vertical or angular |
|
|
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. |
||
|
technical range |
||
|
tube od(mm) |
tube thickness(mm) |
tube height(mm) |
|
60-219 |
4-20 |
10-38 |
|
material & length range |
||
|
tube |
stud |
tube length(m) |
|
a106grb, a335 p5/p9 a204 tp304 |
cs ansi 410, ss304 5%cr-1/2mo |
1-15 |
|
technical range |
||
|
tube od(mm) |
tube thickness(mm) |
tube height(mm) |
|
60-219 |
4-20 |
10-38 |
|
material & length range |
||
|
tube |
stud |
tube length(m) |
|
a106grb, a335 p5/p9 a204 tp304 |
cs ansi 410, ss304 5%cr-1/2mo |
1-15 |
when an electric current is passed at the contact point of the studs and the tube, this, in turn, provides resistance.
the resistance causes heat to be producedwhich is then used for welding.
maximum heat is generated at the interface of the tube and the studs due to maximum resistance.
no external heat source is used to weld the studs and tubes together.
the pressure is used to forge the two together instead.
hence, they are extremely useful in the process that works under high temperature and pressure.
there are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and sea transportation security.our packing can meet any needs of the customers.
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