8/5/8" - 25" API / HSS Pipe Mill Line

Year 2004
Entry:  Uncoiler, Coil Car, Shear, Thermatool Welder, VA
Cut-Off:  Nakata Milling
Forming:  Yoder USA / Korea
Edge Miller:  Linsinger
UT:  Inspectech 
End Facer:  Korean
Seam Annealer:  Thermatool


1. BASIC SPECIFICATION
PIPE MILL
- Line speed (Mechanical) : Max. 40 mpm, Min. 10 mpm
- Threading speed : 8.0 mpm
- Strip pass line : FL + 1500 mm (Existing)
- Pipe pass line : FL + 850 mm with bottom constant
- Line direction : From right to left
- Coil operation : Continuous operation with coil joining

Entry Section
- Continuous operation : 8 5/8" to 25" O.D
- Pinching speed of accumulator : Will be App 2.5 to 3 times than
max. production speed / As required by
production capacity
- Coil loading and feeding : Will be within 3 or 5 min. / As required by
production capacity
- Coil joining and with accumulator operation
- Side trimmer and scrap chopper operation
- Edge miller operation

Forming Section
- Forming type : Full cage forming
- No. of cage section : Three(3) sections
- No. of break down stand : Two(2) stands
- Strip edge treatment : Single radius edge bending
- Down hill percentage : 86.8 %

Welding Section
- High Frequency : 1,200kw, Dual type
- In line Ultrasonic tester : As supplied
- Seam Annealer : Total 2,000 Kw, Medium frequency

Driving Stand
- Driving power
* Sticker stand (1) : 75Kw
* Break down stand (2) : 300 Kw (150 Kw x 2 ea )
* Fin pass stand (3) : 450 Kw (150 Kw x 3 ea )
* #1 Pull out stand (1) : 75 Kw
* #2 Pull out stand (1) : 75 Kw
* Sizing stand (5) : 750 Kw (150 Kw x 5 ea)

2. PRODUCTION RANGE
2-1. PIPE TO BE PRODUCED
ROUND PIPE
- Standard : API 5L, up to X-70 (X-80), Grade A& B,
API 5CT, up to J-55, K-55(N-80)
ASTM A53 A&B
- Outside diameter
Minimum : 8 5/8" (ø 219.1 mm) O.D
Maximum : 25" (ø 630.0 mm) O.D
- Wall thickness
Minimum : 3.2 mm
Maximum : 19.1 mm
15.9 mm at API x-70
- Pipe length
Minimum : 20 ft ( 6.0 m)
Maximum : 60 ft (18.0 m)
- Length tolerance : 0.0 to 6.0 mm
- Pipe grade : Up to API X-70 for API 5L,
Up to K-55 for API 5CT
- Yield strength : Max. 64 Kg/cm sq.
- t/D ratio : Max. 7.3 % / Min.1.0%

PROFILE PIPE
- Standard : JIS G 3466, DIN 59411
- Out diameter
Square : 200x200 – 500x500
Rectangular : 250x150 – 600x400
- Wall thickness : 4.0 mm – 16.0 mm
- Pipe length : 6.0 m - 18.0 m
- t/D ratio : Max. 5.0% / Min.1.0%

2-2. RAW MATERIAL
COIL
- Material : Hot rolled steel
- Coil outside diameter : ø1,010 mm - ø2,300 mm
- Coil inside diameter : ø 760 mm
- Coil weight : Max. 40 ton
- Coil telescope : Max. 60 mm

STRIP
- Strip width : 680 mm – 2,000 mm
- Strip thickness : 3.2 mm – 19.1 mm
- Tolerance of thickness : Max. ±10%
- Tolerance of width : 0 - 20 mm
- Strip camber : Max. 20 mm / 10 m length
- Strip edge condition : Mill edge & slitted edge
- Strip grade : Up to API x-70
- Yield strength : Max. 64.0 Kg/㎟

2-3-2. PRODUCTION CAPACITY
Assumption
- Annual production : 250,000 ton/year
However, it can vary depending on the
product mix. at actual operation
- Net working hour : 2,230 hours/year
- Utilization : 70 % of total working hour
- Downtime : 30 % covering roll change, tool change,
maintenance, overhaul & etc.

Chart 2. Round pipe / API 5L, X70  (3.2mm - 15.9mm Wall Thickness)
219.1 ; 273.1 ; 323.9 ; 355.6 ; 406.4 ; 457.2 ; 508.0 ; 559.0 ; 610.0 ; 630.0

Chart 1. Round pipe / API 5L, X-42    (3.2mm - 19.1mm Wall Thickness)
219.1 ; 273.1 ; 323.9 ; 355.6 ; 406.4 ; 457.2 ; 508.0 ; 559.0 ; 610.0 ; 630.0

Profile Sizes:   (4.0mm - 16.0mm Wall Thickness) 
200x200 ; 250x150 ; 250x250 ; 300x200 ; 300x300 ; 400x200 ; 450x150
350x350 ; 400x300 ; 500x200 ; 400x400 ; 500x300 ; 450x450 ; 500x400 ; 500x500 ; 600x400