20INCH API ERW PIPE MILL LINE YEAR 1977
20inch API ERW Pipe Mill LinePipe diameter: 5inch~20inchPipe thickness: 3~12.7mmLength: Max.20mProduction capacity: 140,000ton/yearInstallation year:1977Final Maintenance and Overhaul year:2013(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×1500stroke2) Forming- Driving motor : DC450KW 850/1700 RPM3) WelderMake: 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 KHZ4) Seam Annealer - 400KW, 3KHX (1unit), 600KW, 2KHX (1unit)5) SizingMake: WYKO(England)Year:1986- Driving motor : AC 150HP6) Cut-Off- Driving motor : DC45KW ×850/2407) End Facer- Spindle speed : 250 ~ 600 RPM8) Ultrasonic testerMake: NDT(Korea)Year:2008- Pressure Intensifier: 120 ㎏/㎠ ~ 500 ㎏/㎠Outer diameter : 130 ~ 610mm/Length : 5,000 ~ 20,000mmDetecting method: Seam U/T, Full body U/T10) Varnish CoaterMake: Sejon(Korea)Year:2016Airless cold spray type, 5” ~ 20”