Product Details

electric resistance welding studded tube

Place of Origin Jiangsu, China
Brand Name Keheng
Model Number Studded tube
Type Boiler Tube

Product Features

  Electric resistance welding studded tube

 

Product Description

 

Specification of studded Tube

Base Tube O.D
(mm)

Base Tube Thickness (mm)

Tube Height
(mm)

Tube Length (meter)

60 mm ~219 mm

4.0 mm ~20 mm

10 mm ~ 38 mm

1-25m

Base Tube MaterialA106GrB, A335 P5/P9 A204 TP304

Stud MaterialCS ANSI 410, SS304 5%Cr-1/2Mo

 

 

Application of studded pipe

1.Increase efficiency in the process of heat recovery and direct flame hostile atmospheres.
2.Reduce the amount of bare pipes used in these processes. (Heat transfer surface of one studded pipe is equivalent to surface of 4 to 10 bare pipes).
3.Ideal for processes applications where dirty fuels are used and harsh environments in terms of temperature and / or corrosion.

Stud Material

1.Carbon steel ASTM A510 grade 1005 to 1010.
2.Alloy steels normally used in steel studs.
3.ASTM A193 Grade: B6, B6X, B8, B8a, B8M, B8C, etc.
4.AISI 304, 316, 410, 347, 321.

electric resistance welding studded tube

 

Test of studded tubes:

Welding tests are carried out as a matter of course to ensure the effectiveness of the stud to pipe bond. Heat treatment of the completed studded 

tube is carried out where necessary. Should fouling eventually reduce the process performance of the equipment, the studded surface can be 

cleaned efficiently by shot blasting without damage to the materials.

An electric current is applied by connect on the stud and tube and theresistance in this circuit produces the heat necessary for welding. Maximum

resistance and therefore maximum heating occurs at the interface Between the Stud and the tube. Pressure to forge the Stud and the tube together 

at the point of maximum heating is applied by various forms of tooling. These resistance welding processes produce a strong metallurgical bond 

between the stud and the tube while minimizing the heat affected zone (HAZ) in the tube. The use of pressure to forge the fin and the tube 

together helps to minimize the heat input necessary to make the weld. This Product is used in Fired Heaters under Very High Pressure & 

Temperature mainly in Petroleum refineries. 

Studding of pipes up to 8 inch dia and stud diameter up to 18mm can be supplied in Carbon steel, alloy steel and stainless steel pipes.

 

Advantages of Steel studs :

1)Satisfying connection surface, little heat loss .

2)Welding connection rate higher than 90 percent.

3)No need of welding power, hardly any welding tumor .

4)Narrow heated zone on the surface, no melted pool, without destroying the tissue of basic tube.

5) Welding parameters are strictly  set to ensure the quality of bulk studded tube and avoid the instability of manual operation

 

For a rapid quotation requested following information:

Base tube : Diameter, thickness, length and material specification and whether ends are plain or weld prepped.

Studs : Diameter, length or height, number per circumferential row/or circumferential pitch, plus vertical pitch and material specification. 

Number of rows of studs and plain end length

 

Materials

 

electric resistance welding studded tube

 

 Producing facility

 

electric resistance welding studded tube

 

 

 

 

Occupying the market with product qualityGaining the client with corporate reputation
JiangSu KeHeng Petrochemical & Electrical Machinery Co., Ltd. formerly JiangYin Petrochemical & Electrical Machinery Factory, founded in 1989, with the area of 26,500 square meters, total construction 15,500 square meters. Located in Jiangyin city, being in Yangtze River Delta economic zone, enjoy convenient transportation access.

   

  electric resistance welding studded tube

 

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electric resistance welding studded tube

 

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electric resistance welding studded tube

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electric resistance welding studded tube

 

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