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Seam  Style
 
Spiral Lock Seam Perforated Tube
Qinghe Metal Mesh offers two seam designs on the perforated spiral tubes: the flush (outside) and inside lock seam.
The flush lock seam tube is the most commonly used tube in the fluid filtration industry mainly as a centertube in the filter housing. It is available in thickness of .010” to .022”. The inside lock seam tube is also used as a center tube and available in thickness of .024” to .035”. 

 

Spot Welded Straight Perforated Tube
Qinghe Metal Mesh offers spot welded overlap tubes in a range of sizes and perforation patterns.
In the filtration industry the spot welded tube is mainly used as an outer shell or jacket for the filter housing. The process begins with raw coil that is perforated and cut to the blank size required, then rolled and spot welded per the customer’s specifications.

 

Straight Seam Welded Perforated Tube
Qinghe Metal Mesh offers straight seam (longitudinal weld) tubes in a range of sizes and perforation patterns.
Welded tubes are mainly used in high pressure applications where spiral tubes cannot reach the pressure requirements necessary. The process begins with raw coil that is perforated and cut to the blank size required, then rolled or formed and welded into a tube and sent out for plating if required.

 

Straight Seam Tack Welded Perforated Tube
Qinghe Metal Mesh offers straight seam tack welded tubes in a range of sizes and perforation patterns.
These tubes are mainly used in lower pressure applications where there may be sizing constraints that do not allow for a spiral or spot welded overlap tube to be used. The process begins with raw coil that is perforated and cut to the blank size required, then rolled and spot welded with no overlap per the customers requirements.

 

Abutted Seam Welded Perorated Tube
Qinghe Metal Mesh offers abutted tubes in a range of sizes and perforation patterns.
This tube is sometimes used as an alternative to the straight seam welded tube when the weld is not required. The removing the welded stage and the post plating of the tube allows for a cost savings to the customer. The process begins with raw coil that is perforated and cut to the blank size required, then rolled or formed into the finished tube.

 

Straight Lock Seam Perforated Tube
Qinghe Metal Mesh offers straight lock seam tubes in a range of sizes and perforation patterns.
Our current capabilities are related to the small diameter, light gauge tubes mainly used in the oil and lube filtration industry.
 

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