Oval Ztzg Galvanized Erw Steel Pipe Mill Making Machine

Tube ERW Production Line High-Frequency Straight Seam Welded Pipe ERW Tube Mill

Direct Square-to-Square(DSS) Pipe Mill

DSS technique directly reel the strip steel into desired sized tube with several distinct advantages. It adapts the multi-point bending method, which avoids the axial force and side abrasion, reduces the forming step, and ensures high quality. Compare to Round-to-Square(RS) forming technique, DSS creates better outer edge and smaller inner arc for the cross section of the tube, and the brim is flatter with more regular outlook. With our new DSS-3 technique, only one set of rollers is needed for the entire mill with no need for any roller or spacer replacement, which achieves full-automatic adjustment for roller positions, significantly increasing production efficiency and reducing labor cost and risk of hazard.

Process flow:

Uncoiling → leveling → accumulator → rolling forming → high-frequency welding → external burr scraping → cooling → sizing → straightening → flying saw cutting → blanking

Usage of Products:

The hot rolled steel strip is used as tube billet for conveying pressure fluid. The steel pipe has strong bearing capacity and good welding performance. It is safe and reliable to use after all kinds of strict scientific inspection and testing. Large diameter steel pipe, high transmission efficiency, and can save the investment of pipeline laying. Mainly used for conveying oil and natural gas pipelines.

Advantage

1.Saves significant roller cost when producing multiple sizes of tubes.
2.Occupies smaller floor space compare to RS technique.
3.Saves raw material consumption since the width of steel strip required is 2.4-3% narrower than RS.
4.High Automation level, require minimum to none manual adjustment.
5.Reduce labor maintenance cost and production down time (1-2days per set of roller & spacer replacement)
Reduce power wastage and roller abrasion.