Brief introduction and quotation of
BG114 high precision machine unit for stainless steel welded pipe
Description of product
This equipment is specially used for producingΦ48-Φ114mm,
δ1.0-3.0mm(Square and rectangle pipe≤2.5mm )stainless steel
straight seam welded pipe. It made by refined materials in high
precision and equipped with fixed length cutting saw. The main
machine includs forming, welding ,sizing and straightening device.
The composition of equipment is from uncoiler to fixed
length-cutting saw. Rolling speed can be adjusted correspondingly
within suitable range of pipe diameter and wall thickness.
- Applicable material:
- Material: SUS302 stainless steel strip.
- The thickness of steel strip: 1.0-3.0mm (As per GB708-88)
- The width of steel strip: 150-360mm(±0.2mm)
- I.D. of steel coil: Φ450-Φ550mm
- O.D. of steel coil: Φ800-Φ1200mm
- Maximum weight coil: 3000kgs
- Dimension range of processing steel pipe:
- O.D.: Φ48-Φ114mm
- Wall thickness: 1.0-3.0mm(Square and rectangle pipe≤2.5mm )
- Length: 4-8m
- Product (steel pipe) process flow:
Raw material (steel coil) □uncoiling □ shearing and end
welding□non-power leveling□mill-forming□TIG welding and plasma
welding□Polishing burrs outside of weld seam □ cooling □ sizing □
roughly straightening □ fixed length cutting □ finished pipe □
1.5 Milling speed: 0-8m/min
1.6Product precision: maximum tolerance of diameter±0.15mm
1.7Advised user’s necessary accessories (only for reference):
- Mechanical equipment site: 50m×4m (length × width)
- Total electrical power: 85KW
- One set of air compressor(Prepared by customer, Purchase from
- Welding tool: tungsten bar, tungsten filament,Polishing wheel.
(5) Lifting equipment and tooling for installing machine, maximum
weight of one part is 10 tons.
(6) Power and air supply.(380V/50HZ)
Introduction of main components:
Structure type: Double-side 180ºrotary hydraulic expanding tightly,
which insure steel coil feeding alternatively and make steel strip
going into accumulator freely.
Applicable range: 150-360mm steel strip width, 1.0-3.0mm thickness,
Φ800-Φ1200mm steel coil O.D., Φ450-Φ550mm steel coil I.D.,
Max.3000kgs steel coil weight.
- Shearing and butt-welding machine, which insure double steel coil
shearing tidily and then welding together and leveling weld seam.
- Forming, welding table and sizing unit:
Feeding & leveling device:
Form: Up and down five rolls are passively leveled for
straightening strip steel before it is fed into forming unit.
Mainly roughly mill-forming steel strip and controlling weld seam.
a. Horizontal roll stand:
Structure: 45#Cast steel, double housing, changing rolls in the
Diameter of horizontal roll’s shaft: Φ70mm, material: 42CrMo
b. Vertical roll stand:
Type: Passive rotation
Diameter of vertical roll’s shaft: Φ40mm, material: 45# steel
c. Adjusting method: Single spiral pole manual adjusting
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. Three sets of extruding roll stand for controlling weld seam to
realize successful welding.
c. Three sets of scraper frame for scraping outside weld seam
(4) Sizing device: Mainly fine shaping pipe after welding and
controlling size accuracy. Each 5 sets of horizontal roll stand,
vertical roll stand, three sets of gearbox branch (double
connection), and 10 sets of universal shaft. (Structure same as
(5) Roughly straightening machine frame:
a. Usage: It is mainly used for roughly straightening of finished
b. Form: Turk’s head type two sets
c. One installation bed along with sizing machine.
(6) Main driving system: The main unit is connected with main
reducer by main motor and transmits power to gearbox branches, then
gearbox branches drive upper and down shafts on horizontal roll
a. Master motor: Z4 series, DC75KW one set
b. Universal transmission shaft 26 pcs
2.5 Pneumatic tracking cutting saw:
(1) Cutting method: Pneumatic tracking and automatic cutting
(2) Cutting thickness: δ1.0-3.0mm
(3) Cutting O.D.: Φ48-Φ114mm
(4) Cutting length: 4-8m
(5) Cutting motor: 15KW
(6) Cutting tolerance: ≤10mm
2. 600A Ar-arc welder (TIG welding system) one set
2. 7Finished pipe passing rack: Welded frame structure equipped
with sizing signal system
3. Main equipments and price:
1) Uncoiler(double-side hydraulic expanding)
2) Shear machine
3) Main machine(forming, welding, polishing, sizing, master driving
4) Pneumatic tracking cutting saw
5) Run-out table
6) Electric controlling system (75HP-100HP)
7) Put the support rack for welding machine FREE
8) All bearings choose NSK brand FREE
9)Horizontal stands choose Worm and worn-screw adjusting FREE
(1) Rolls for welded pipe will be ordered additionally according to
type and specification provided by customer.
(2) When signing sales contract, we will discuss the following
expense: Need two persons, the buyer should charge of Visa, return
ticket, food and accommodation and USD60/person/day for salary.
(3) The date of delivery: 115 days later after receiving 30% of
(4) The terms of payment: 30% should be paid after signing S/C, and
the remaining 70% before delivery.