This equipment is specially used for producing Φ19-Φ63.5mm, 1.0-3.0mm high-frequency straight seam welded tube and corresponding square tube and special-shaped tube (δ≤2.5mm). The composition of equipment is from uncoiler to fixed length
cutting saw. Rolling speed can be adjusted correspondingly within
suitable range of tube diameter and wall thickness.
2. Applicable material:
(1) Hot or cold-rolled steel strip (As per GB700-88)
(2) Material: Low-carbon steel, low alloy steel, galvanized steel
(3) The thickness of steel strip: 1.0-3.0mm (As per GB708-88)
(4) The width of steel strip: 60-200mm
(5) I.D. of steel coil: Φ450-Φ550mm
(6) O.D. of steel coil: Φ800-Φ1200mm
(7) Maximum weight coil: 3000kgs
3. Dimension range of processing steel tube:
(1) O.D.: Φ19-Φ63.5mm
(2) Wall thickness: 1.0-3.0mm (square tube and special-shaped tube
(3) Length: 4-8M
4. Milling speed: 30-80M/min(choose different speed as per
different pipe diameter and thickness)
5. Product (steel tube) process flow:
Raw material (steel coil) → uncoiling → shearing and end welding →
material accumulating → non-power leveling → mill-forming →
high-frequency welding → removing burrs outside of weld seam →
cooling → sizing → roughly straightening → fixed length cutting →
6. Configuration and quotationThe voltage: 380V, 50Hz, 3P
The offer details as follow, choose by customer, different price as
Rolls for welded tube will be ordered additionally according to
type and specification provided by customer.
8. Spare parts (free choice, the price is extra)
Spare parts for mechanical parts
Spare parts for computer cutting saw
Spare parts for high frequency welder
9. Technical appendixes
Structure type: Double-side180ºrotary HYDRAULIC expanding tight,
which insure steel coil feeding alternatively and make steel strip
going into accumulator freely.
Steel strip width: 60-200mm
Steel coil O.D.: Φ800-Φ1200mm
Steel coil I.D.: Φ450-Φ550mm
Steel coil weight: Max.3000kgs
Hydraulic parts: YUKEN
Pneumatic parts: AIRTAG
AC motor: Siemens Beide
b. Shearing and butt-welder:
Usage: ensure two coiled steel strips shearing tidily and then
welding together and
leveling weld seam.
b.Horizontal-type accumulator: (AC motor is SIEMENS BEIDE with ABB adjustor )
The steel strips strips stored in it shall be enough to ensure main
machine to run continuously while welding two coiled strips.
(1) Structure:Horizontal-type plate-welded part with automatic
feeding and delivery system. Feeding motor: AC 15KW and Driven
motor: AC 18.5KW
(2)Accumulating volume: 150-300M.
Horizontal type accumulator
d. Forming, welding and sizing unit:
(NSK bearing used for horizontal and vertical stands)
(1) Feed leveling device:
a. Type: 5 rolls are passively leveled for leveling strip steel to
make steel strips go into forming device.
b. Guiding roll: One pair
(2) Forming device:
Mainly roughly mill-forming steel strip and controlling weld seam.
a. Horizontal roll stand:
Structure: Cast steel, double housing, changing rolls in the side
Diameter of horizontal roll’s shaft: Φ70mm, material: 42CrMo
b. Vertical roll stand:
Quantity: 9(vertical miller group)
Type: Passive rotation
Diameter of vertical roll’s shaft: Φ40mm, material: 45# steel
c. Drive gear box
Structure: Spiral bevel gear, cylindrical gear
Material: casing: QT50, gear: 20CrMnTi and 40Cr, input and output
Drive transmission: 14 sets of Jeep Auto 212 universal transmission
d. One set of bed for installation
(3) Guiding extruding and welding scraping apparatus:
a. One set of guide roll stand for controlling direction of pipe
seam to insure pipe seam flatly and straightly entering into
b. One set of extruding roll stand for controlling weld seam to
realize successful welding.
c. Two sets of scraper frame for scraping outside weld seam
d. Installation bed along with forming machine
(4) One set of water cooling device.
(5) Sizing device: Mainly fine shaping pipe after welding and
controlling size accuracy. Each 6 sets of horizontal roll stand,
vertical roll stand and drive gearbox, 12 sets of universal shaft.
(Structure same as forming device)
(6) Roughly straightening machine frame:
a. Type: Turk’s head type, 4 rolls single side two sets
b. One installation bed along with sizing main machine.
(7) Driving system: The main unit is connected with main reduce by
major motor and transmits power to gearbox branches, then gearbox
branches drive upper and down shafts on horizontal roll frame.
a. Main motor: Z4 series, DC 185KW (Hengli DC motor) one set
b. Main reducer: ZLYseries (outside four-shaft ends) one set
e. High-frequency welder: (Prpeared by buyer/end-user)
Solid-state High-frequency welding machine: 200KW
Include DC speed adjustor, overall control table and button station
f. Cold CNC cutting saw:
(5),size of saw blade
Servo motor 15KW
Servo motor 2.9KW
(9),speed of cutting
Driven motor: AC servo motor Yaskawa made in Japan 15KW
Feeding motor: AC servo motor Yaskawa made in Japan 2.9KW
Cutting motor: AC SIEMENS BEIDE made in China 7.5KW
Hydraulic parts: YUKEN
Pneumatic parts: AIRTAG
Saw blade: KINKELDER made in Holland(Imported high-speed steel PVD
g. Run-out table:
Welded frame structure equipped
with sizing signal system
10. Advised user’s necessary accessories (only for reference):
(1) Mechanical equipment site: 50M × 4.5M (length × width)
(2) Electrical equipment site: 5M ×4M (length ×width)
(3) Machine unit foundation base (See supplier’s base drawing)
(4) Two sets of 5-ton overhead crane
(5) Power supply:
a. Equipment motor:
b. High-frequency electric: 200 KW (Solid state)
(6) Saw blades (Disk) for tracking saw, specification as per
instruction book and quantity as per customer need.
(7) Magnetic bar (Impeder core) for welding pipe, purchase as per
pipe making size.
(8) One set of Φ2", 32M high-pressure pumps for pipe-welding
(9) One set of cooling water pool for pipe-welding machine, each
volume 30 M3 with water pipe, water pressure meter and valve.
(Decide size and quantity when installation on site, purchase from
(10) Machine unit electric circuit. Before assembling, circuit must
reach the electric cabinet of high-frequency room. Electric
connection for high-frequency room to overall control table and
button station. (Decide size and quantity when installation on
site, purchase from market)
(11) High-frequency room for machine unit. Adopting ground or attic
according to customer’s layout.
(12) One set of air compressor. (Purchase from market)
(13) Lifting equipment and tooling for installing machine, maximum
weight of one part is 5 tons.
11. Working process drawing:
12. Payment terms
1.1 The buyer pays the seller 30% of the total price as down
payment in T/T when the order is confirmed.
1.2 The 70% of the equipment’s total price should be paid before
shipment. This part can execute in T/T.
2. The date of delivery: 120 working days later after receiving 30%
of total value.
3. Guarantee: 12 months after installation are finished
4. Packing: Seaworthy packing.
5. Installation and testing: Need three technicians, USD60 per day
per technician, plus traveling cost, board and lodging.
1.Our guarantee time is one year, if any component is damaged as
the qulity problem during guarantee time, we can send the component
to the customer by DHL, TNT freely.
2.Our factory can send our engineer to the customer’s factory to
solve some problem if customer need . The customer provides the
double trip tickets, food and accommodation for our engineer. The
customer also can send the engineer to our factory to learn the
operation and maintains freely.
JIANGSU NANYANG MACHINERY MANUFACTURING CO., LTD.