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Spiral Products

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Safa Rolling Spiral Products

 

Spiral Mill (on line system) for Water and Industrial Application

 

This mill was commissioned in 2003 designed for producing pipes with up to 16 m. length for water, and industrial applications with 20 to 120 in. diameter and 25.4 mm thickness in accordance with AWWA C200 standard and customer requirement. In the production process of the mill, steel coil is put into the machine, so that irregular opening of the strip is cut and is welded to previous strip end by using submerged-arc welding (SAW). Then continuous milling is applied on two sides of strip, and while proceeds through forming rollers, final shape of pipe is formed and the same time, spiral seam of formed sheet is welded continually from inside and outside by submerged-arc welding (SAW) and cut in desired length.
Then two ends of pipe are beveled by chamfering machine and it is tested by hydrostatic machine to meet the requirement. In final stage pipe is inspected for dimensional and other standard requirement to be delivered to the customer.

 

Spiral Mill (Off Line system) specific for Oil and Gas Pipe

 

This mill produces pipes with 16 m. length by spiral seam-welding (SAW) in 20 to 64 in. dia. and up to 25.4 mm thickness. Its products include steel pipes for oil, gas & water application in accordance with international standards such as: API 5L, ISO 3183 and national standards such as: IPS-M-PI-190
In production process, steel coil is put on coil opener & irregular parts of opened coil are cut, then end of previous strip is welded to beginning of new coil. While moving through rollers of forming machine, final shape of pipe is formed and at the same time, edges of sheets are welded by continues tack welding and pipe is cut in desired length. In next stations spiral seam of pipe is completed by submerged-arc welding (SAW) from inside and outside simultaneously. Then hydrostatic test is conducted on produced pipe by using high pressurized water and all welding seam plus body of pipe is inspected first by ultrasonic equipment and then welding portion of pipe ends is inspected by fluoroscopy system. Following that, two ends of pipe are chamfered and entire circumference of pipe ends is inspected by MPT and UT equipment and finally it is ready to be delivered to the customer.

 

 

 

Size (in.) Thickness (mm.) Weight (kg/m.)
  20 5.6 69.38  
10.3 126.41  
15.9 192.95  
  22 5.6 76.42  
10.3 139.37  
15.9 212.95  
  24 6.4 95.26  
11.1 163.93  
17.5 255.69  
  26 6.4 103.15  
11.1 177.62  
17.5 277.27  
  28 6.4 111.2  
11.9 205.15  
20.6 350.72  
  30 6.4 119.25  
11.9 220.12  
20.6 376.63  
  32 6.4 127.3  
11.9 235.09  
22.2 432.93  
  34 6.4 135.35  
11.9 250.05  
22.2 460.85  
  36 7.9 176.52  
11.9 264.72  
2.2 488.22  
  38 7.9 186.46  
11.9 279.69  
22.2 516.14  
  40 7.9 196.39  
11.9 294.66  
22.2 544.06  
  42 8.7 227.05  
14.3 371.22  
22.2 571.98  
  44 8.7 237.99  
14.3 389.21  
22.2 599.9  
  46 8.7 248.72  
14.3 406.84  
22.2 627.27  
  48 8.7 259.66  
14.3 424.82  
22.2 655.19  
  52 9.5 307.25  
14.3 460.79  
22.2 711.03  
  56 9.5 330.91  
14.3 496.41  
22.2 766.32  
  60 9.5 354.8  
12.7 473.31  
22.2 822.16  
  64 9.5 378.7  
12.7 505.26  
22.2 878  
  68 11.9 503.3  
15.9 670.91  
22.2 933.3  
  72 12.7 568.83  
17.5 781.75  
23.8 1059.49  
  76 12.7 600.46  
17.5 825.34  
23.8 1118.76  
  80 14.3 711.52  
19.1 948.09  
25.4 1256.86  
  84 14.3 747.35  
19.1 995.94  
25.4 1320.5  
  88 14.3 783.17  
19.1 1043.8  
25.4 1384.14  
  96 15.9 949.85  
20.6 1228.23  
25.4 1511.42  
  104 15.9 1029.52  
20.6 1331.46  
25.4 1638.69  
  112 15.9 1109.19  
20.6 1434.68  
25.4 1765.97  
  120 15.9 1188.87  
20.6 1537.91  
25.4 1893.25  

 

  Minimum Thickness
  Middle Thickness
  Maximum Thickness
  Gas Pipes