ERW426 welded pipe mill
Production Description
The forming fundamental of ERW tube mill
The forming fundamental of tube mill: the slit strip is formed into approximate round steel tube without welding by the forming mill,and then the tube’s edge is melted and welded by the HF induction welder and the welded seam is squeezed Immediately after welding at welding section of tube mill .At this stage, the steel pipe welding is completed, the welded tube through cooling and sizing mill and straightening stand, the final precision steel round or square&rectangular tube is done
The description of ERW426welded tube mill
1)ERW426welded tube mill is one model of ERW tube mills .The ERW426 welded tube mill utilizes HF induction welding to manufactureØ219mm---Ø426mm steel tube and 150X150mm---350x350mm square tube and 100X200mm-300X400mm rectangular tube with the thickness 4.0--10.0mm .
2)ERW426 welded tube mill has conventional forming technology, it is ideal for round tube , square&rectangular tube.best control on the tube dimension tolerance and length accuracy.
3)ERW426welded tube mill is a tailored-made steel tube production line . We are able to design and manufacture the tube mill as per customer’s requirement ,Such as ,the steel tube diameter and thickness , raw material type and raw material yield strength ,specification of tube mill and your floor space dimension,power supply condition .
Before making quotation ,we will send the customer a request form to customer’s specific requirement. So that we make quotation that completely meet customer’s demand.
4)We are not only a provider of tube mill, but also a provider of solution for the problem that arise in the course of Pre-sales, in sales, and after-sales
Process Flow
Coil loading car→ single mandrel uncoiler→Pinch and leveling machine →Shear and end welding machine( strip joiner) →floor type accumulator→forming machine→HF welding →Water Cooling→Sizing machine→ Milling type cutting Saw → tube end chamfering machine → hydrostatic testing machine →Run out table→ automatic stacking machine → Warehouse Storage

Advantages
1. High Precision
2. High Production efficiency,Line speed can be up to 30m/min
3. High Strength,The machine works stably at a high speed, which improves product quality.
4. High Good product rate, reach to 99%
5. Low wastage, Low unit wastage and low production cost.
6. 100% interchangeability of the same parts of the same equipment
Specification
Raw Material specification | The Material | HR carbon steel . |
Width | 680mm-1600mm | |
Thickness: | 5.0mm-16.0mm | |
Coil ID | φ610- φ760mm | |
Coil OD | Max :φ2000mm | |
Coil Weight | 15-20Tons | |
Steel tube specification | Round Pipe | 219mm-426mm |
Square & Rectangular Pipe | 150*150mm-350*350mm | |
100*200mm-300*400mm | ||
Wall Thickness | 4.0-16.0mm(Round Pipe) | |
4.0-15.0mm (Square&rectangular tube) | ||
Speed | Max.30m/min | |
Pipe Length | 3m-12m,can be defined by the customer | |
Size of the whole line | 150mX30m(L*W) | |
Total power | 1200KW |
Company Introduction
Thanks to the know-how acquired over 20 years, HEBEI SANSO MACHINERY CO.,LTD is able to design, build and install ERW welded tube mill for the production of tubes in the range from 8mm up to 508 mm diameter, manufacturing them according to production speeds and thicknesses and specification upon customer specification.
Besides complete welded tube mill , SANSO provides individual parts for the replacement or integration into existing welded tube mill : uncoilers, pinch and leveling machine, automatic shearing and end welding machine, horizontal spiral accumulators, and fully automatic packing machine.