please see follow
Product pipe size | Sizes | |
OD | φ219—φ820mm | φ426—φ1420mm |
Wall thickness | 5—12.7mm | 6—16mm |
Length | 8—12.5mm | 8—12.5mm |
Size of coils |
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|
ID | φ508—φ760mm | φ508—φ760mm |
OD | φ1200—φ2000mm | φ1200—φ2000mm |
Width (before shearing) | 500—1550mm | 600—1550mm |
Thickness | 5—16mm | 6—16mm |
Coil weight(max) | 25t | 30t |
The quality of the material | API—5LS X60—X65 | |
Yielding limit | 457N/mm2 | 457N/mm2 |
Strength limit | 562Mpa | 562Mpa |
Welding methods |
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|
Butt welding | Single wire submerged—arc welding | |
Inner welding | Single wire submerged—arc welding | |
Outer welding | Single or double wire submerged—arc welding | |
line speed | 0.6—3.6m/min | |
Feeding and drawing force | 60t | 120t |
Pressure of hydraulic press | 7.5—21Mpa | |
φ245—φ1020 Spirally Welded Pipe Mill. The production line is flow process from start to finish. The ultrasonic flaw detection, X Ray inspection and hydraulic test can all be carried out continuously. It can be used to produce the spirally welded pipes with its quality in conformity with API standard.
Technological Process: coil turn-- over—coil carriage—decoiler—rough leveler—the cutting of the front and rear ends of the strip—butt welding—precision leveler—disk shear and edge prebending—strip guide—forming—inner welding—outer welding—continuous ultrasonic test for butt welding—pipe cutting off and beveling—pipe run—out—cleaning of the welding flux within the pipes—visual inspection—manual ultrasonic test and its repairing (X-ray screen inspection—repairing)—hydraulic test—oil coating—drying process—the finished products inspection—gathering and storing.
