Description:

20 INC(508MM) API ERW PIPE MILL LINE

20inch(508mm) API ERW Pipe Mill Line
Make: Ilsin(Korea)
Installation year: 1977
Retrofit(Sizing part): 2011
Final Maintenance and Overhaul year: 2013
Stop year: November/2019
Pipe diameter: 5inch~20inch(508mm)
Pipe thickness: 3~12.7mm
Pipe length: 6~21m
Production capacity: 50ton~80ton/hour(18~20inch pipes)
Speed:15m/min(20inch pipe)
18m/min(9inch~18inch)
(Process)
Uncoiler-Forming-Welder-Seam annealer-Sizing mill-
Cut off machine-Hydro tester, E/F- Ultrasonic tester-Varnish coater-Product

(Equipment list)
1) Uncoiler
- Driving motor : DC45KW ×850/2400
- Hydraulic cylinder: : 180Φ×1500stroke
2) Forming
- Driving motor : DC450KW 850/1700 RPM
3) Welder
Make: Thermatool(U.S.A) / Drive: Yaskawa(Japan)
- Max. plate volt : 20KV, DC
- Filament volt : 17.5 volts
- Max. plate current : 50 AMPS D.C
- Grid current : 9 Amps frequency : 400 KHZ
4) Seam Annealer - 400KW, 3KHX (1unit), 600KW, 2KHX (1unit)
5) Sizing(Auto change type)
Manufacturing year;2011
- Driving motor : AC 150HP
6) Cut-Off(Drum rotation type: Disc knife)
- Driving motor : DC45KW ×850/240
7) Leveller
8) Automatic end facing machine
9) Ultrasonic tester
Seam U/T x1 unit
Full body U/T x unit
Make: NDT(Korea)
Year: 2008
- Pressure Intensifier: 120 ㎏/㎠ ~ 500 ㎏/㎠
Outer diameter : 130 ~ 610mm/Length : 5,000 ~ 20,000mm
10)Oil Coater
11) Varnish Coater
Make: Sejong(Korea)
Year: 2016
- Airless cold spray type, 5” ~ 20”