Sinarsky Pipe Works (Production process)

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Drill pipe manufacture (T-4)

1. Tube stock arrival.
2. Tube stock heating to t = 90 ^oC in hot-water bath to exclude cracking in the process of pipes breaking in shears.
3. Tube stock breaking in press-shears to 2500 mm lengths.
4. Tube stock heating in circular furnace to t = 1280 ^oC.
5. Hot rolling of pipes in pipe rolling unit T?A-140.
   • Tube stock broaching in piercing mill.
   • Sleeve rolling in lengthwise rolling mills No 1 and No 2.
   • Pipe rolling in reeling mill.
   • Pipe rolling in sizing mill.
6. Pipe cooling in screw cooler.
7. Pipe cooling in chain cooler.
8. Smooth pipes finishing.
   • Pipe straightening in straightener PBK600x3.
   • Pipe ends cutting in pipe cutting mills 91A15.
   • Pipes blowing in blowing machines.
   • Acceptance by Quality Inspection Department.
9. Pipe ends heating and upsetting in horizontal forging machine ?KM WSR-630.
10. Pipes turning, boring and facing in Kri-Dan lathes model RT-180.
11. Beaded end heating in HF unit.
12. Pipes thermal treatment in continuous roller furnaces.
13. Pipes straightening in Bronx straightener.
14. Joints welding to drill pipes in Thompson s friction welder. External flash trimming, internal flash notching.
15. Thermal treatment of welds in drill pipes in HF unit.
16. Welded joint area machining in drill pipes in lathe model BRF-23.
17. Drill pipe welds testing in bending press.
18. Ultrasonic testing of welds in cylindrical part of drill pipe upset ends in «Ecograph 1140» unit.
19. Pipes acceptance by Quality Inspection Department.
20. Purging with compressed air.
21. Stamping and marking.
22. Protective parts fitting.
23. Transfer of piles of pipes to shop T-2 storage area.
24. Shipment of pipes to customer (including shop T-4).

Threaded pipe manufacture (temporarily closed)

1. Tube stock arrival.
2. Tube stock heating to t = 90 ^oC in hot-water bath to exclude cracking at pipes breaking in shears.
3. Tube stock breaking in press-shears to 2500 mm lengths.
4. Tube stock heating in circular furnace to t = 1280 ^oC.
5. Hot rolling of pipes in pipe rolling unit T?A-140.
   • Tube stock broaching in piercing mill.
   • Sleeve rolling in lengthwise rolling mills No 1 and No 2.
   • Pipe rolling in reeling mill.
   • Pipe rolling in sizing mill.
6. Pipe cooling in screw cooler.
7. Pipe cooling in chain cooler.
8. Smooth pipe finishing.
   • Pipe straightening in straightener PBK600x3.
   • Pipe ends cutting in pipe cutting mills 91A15.
   • Pipe blowing in blowing machines.
   • Acceptance by Quality Inspection Department.
9. Pipes loading to receiving pocket of threaded pipes flow line.
10. Pipes conveying to template line.
11. Pipe checking against template with mandrel (internal diameter control over the entire length).
12. Pipe ends threading in Emag lathes model MSC-25 (D 180).
13. Pipe thread inspection by Quality Inspection Department.
14. Pipes coupling in Kizerling machines model MAM 214.
    • Thread packing with grease.
    • Preliminary operation of couplings fitting.
    • Forced couplings fitting.
15. Pipes hydraulic testing in Mannesmann-Demag (line 1), Monbar (line 2) hydraulic presses.
16. Acceptance by Quality Inspection Department.
17. Pipes stamping, weighing, length measuring in Schamber unit.
18. Pipes marking with paint.
19. Fitting of protective components to threaded ends of pipes and couplings.

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