HG50 High-Frequency Welded Pipe Mill Line is designed to produce
welded pipes of Ф16～50mm in diameter and 1.0～3.0mm in wall
thickness as well as square and rectangular pipes and deformed
pipes of the corresponding size. Adopting roll pass design, the
production line can manufacture welded steel pipes with good
quality machining and high precision assembling.
Design guideline :
●Improve operational performance and production performance;
●Improve the environment and security of the operations;
●Improve product stability;
●Improve product productivity;
●Reduce roll costs.
According to the designing guideline of improving the operating
character & environment and the safety & producing character,
reducing the cost of the roller to guarantee high efficiency, HG50
production line adopts the double-radius hole style of design.
Conforming to the YB189-64 standard
(1)Material: Low carbon steel and low alloy constructional steel
(2)Mechanical properties: σb≤520Mpa,σs≤340MPa
(3)Strip Width:56～160mm
(4)Strip Thickness:1.0～3.0mm
(5)Steel strip coil:Inner Diameter of Coils:φ480～φ520mm
Outer Diameter of Coils:φ1000～φ1800mm
(6)Coil Weight:≤2T
- Main specifications of welding pipe products:
(1)Round Pipe Diameter:φ16～φ50mm
(2)Wall Thickness of Pipes:1.0～3.0mm
(3)Fixed Cutting length:4～12m
(4)Pipe-cutting Precision:0～3mm
20～100m/min
- Power, Water & Air Supply:
(1)Power:
Power Volume of the Line Approx.600KW
Power Source 380V/50Hz/3phases
(2)Circulation Cooling Water:
Flow:30T/h～40 T/h
Pool Volume:60m3
(3)Compressed Air
Flow:5m3/min
Pressure:5～7kg/ cm2
8m wide, 100m long, at least 5m high from Ceiling Rails to Ground.
The uncoiler is of the structure of double expansion and cantilever
mandrels. It contains two main parts: main body and the fixed base.
The main body is equipped with pneumatic system to satisfy the
needs of expanding, contracting and braking of the mandrels.
| OD of coil | Φ1000-1800mm |
| ID of coil | Φ480-520mm |
| Thickness of strip | 1.0-3.0mm |
| Width of strip | 56-160mm |
| Weight of single strip | Max2T |
| Expansion Type | manual operation |
| Break | Pneumatic driving |
- Automatic Shear and welder
Used to cut off the irregular part of the tape head and tail, and
align the tape tail of the previous coil with the tape head of the
next coil, and weld them together to continuously feed the looper.
Structural form: shear welding bed, pinch feeding device, double
centering device, double shearing shearing system, shearing plate
system, welding bottom plate driving system, etc.
| Strip width | 56-160mm |
| Welding thickness | 1.0-3.0mm |
| Cutting Type | Automatic shear |
| Welding Mode | Automatic welding |
| Hydraulic pressure | 8-10MPa |
| Working Cycle | Max.180 seconds |
This unit is main include in press& carry material device,
accumulator assemble, carry off material unit, electric control
unit.
press & carry material device:it can supply the strip steel to
accumulator and the mean times it will transfer the carry velocity
information to electric control system, when we demand stop carry
the material to this unit, it will stop roll to the electric motor
and press& carry material roll by the break, and also could adjust
the velocity to carry electric motor and the unit carry material
velocity.
Accumulator frame assemble:It can be used to storage the strip
steel material from press& carry unit and it could be draw from the
center send-off material roll.
Send-off material device: It can carry the strip steel to shape
system and send the carry out material velocity information to
electric control device.
specification:
| working style | change circle |
| carry material going velocity | Vmax=240m/min |
| advantage | More material, No strike |
| Pinch form | Pneumatic, 6Mpa |
| steel coil thickness | 1.0-3.0mm |
| width | 56-160mm |
| storage area | 3.0 m2 |
| electric motor power of the press & carry | 11KW |
| the electric motor of the accumulator frame | 22KW |
Forming & SizingThe forming & sizing unit is the vital equipment to the pipe mill
line. This unit abide by the roll frame theory. It could continue
process some specification steel tube by no-contact welding, that
is carrying some strip steel to this unit and let it passing the
frame roll to frame tube raw, and then take the electric fluid
together on the tube welding surface so as to treat the tube
temperature higher to suit welding by the pressing roll welding,
and then after cooling, forming sizing and flattener to product
what is your demand tube.
| Forming Pipe OD. | Round:Φ16-50mm |
| Forming Pipe Wall Thickness | 1.0-3.0mm |
| Forming speed | Max.100m/min |
| Number. of forming stands, horizontal | 7 |
| Number. of forming stands, vertical | 10 |
| Guide Roll Stand | 1 |
| Squeeze Roll Stand | 1 |
| Grinding Roll Stand | 1 |
| Bur Scraping Cutter | 2 Sets |
| No. of sizing stands, horizontal | 5 |
| Number. of sizing stands, vertical | 5 |
| Turks Head | 2 sets with single head |
| Shaft dia. and material of horizontal roll stand | Φ60mm, Material 40Cr |
| Shaft dia. and Material of vertical roll stand | Φ40Material 40Cr |
The cutter machine is the key equipment in the production pipe, and
it used to precisely cut all kinds of frame tube automatically.
Concerning to using high accurate STD control system and machinery
system, this unit has the good precisely dimension advantage, and
the machinery transfer best advantage, so the quickly ability and
accurate processing is this unit advantage.
Machine parameters :
(a)Drive motor: 15KW servo motor
(b)Cutting motor: 15KW variable frequency
(c)Maximum linear speed: 100m/min.
(d)Cutting length range: 4 ~ 12meters
(e)Cutting length accuracy: ±1.5mm (Line speed fluctuation does not
exceed 2%)
(f)Feeding direction: according to customer require
(g)Tracking speed: Same as tube mill (20-100m/min)
(h)Equiment function: Automatic, manual, It has the function of
cutting short ruler
The finished pipes run along the Transit roller and to be
automatically moved onto the Bench. Then simple Packing Machine
packs the pipes in hexagon shape.
Motor: 3kw
Length: 18m
Material: Cr12
Hardness of roller: HRC58-62
Deepness of quench hardening:≥ 10mm
Roughness of surface: Ra≤0.8um
- 200KW High Frequency Welder
(1)200KW solid state High Frequency Welder,380V/220V,50Hz
(2)Design parameter
● Nominal power:200kW
● Rated dc power:Pd=200kW
● Rated dc voltage:UdN=450V
● Rated dc current:IdN=1350A
● Power supply efficiency:η≥85%
● Output power:Pout＞200kW
● Design frequency:f=200KHz±50KHZ
● MOSFET inverter: 120kW×6
● Output form of slot way:
No output welding transformer, secondary resonance
(3) Distribution requirements
● Nominal power: 200kW
● Rated dc power: Pd=200kW
● Rated power factor: COSφ≥0.9
● Distribution capacity: S≥800kVA
● Service voltage: 380V/50Hz
● Into the line current: I=1050A
● Incoming cable: two 240mm² copper cables are used in parallel,
three phase four wire system
- Circulating soft water cooling system
● Water - water heat exchanger
● Internal circulation water pressure:0.15~0.25MPa
◆ Internal circulation water flow:50m³/h
◆ Water outlet temperature of inner circulating water: ≤40℃
◆ Inner circulating water return water temperature:≤45℃
● Heat exchanger area:≥25m²
● External circulation water flow:≥65.4m³/h(BUYER SUPPLY)
◆ External circulation water inlet temperature:≤35℃
◆ Intake water pressure:0.20～0.3MPa(about 2.0～3kg/cm²)
Welding type:Induction
TYPE:Water-Water cooling system
- Shipment within 4 months after receipt of down payment
- 30%: The total amount of down payment shall be paid by T/T to the
Seller within 15 days after the signature of the Contract. The
Contract then comes into effect.
- 70%: Before shipment by L/C .
- Quality and Service Warranty
Pre-sales service:
·We can provide pictures of the finished equipment before shipment
to ensure the authenticity of our products.
·If the government does not allow the seller to leave China and go
to the customer's country for equipment debugging, we will provide
online remote guidance to the buyer’s engineer, and do seller’s
best to provide a clear and complete layout to help the buyer with
equipment installation and commissioning.
·If the Chinese government can allow the seller to leave China and
go to the customer's country for equipment debugging, we will send
engineers there as described below:
Equipment arriving at the buyer, the technical services personnel
at the scene debugging, maintenance, equipment commissioning,
commissioning, operation and maintenance instruction, responsible
for technical training for equipment operation and maintenance
personnel of the buyer.
The debugging time is one month,within one month The buyer need pay
for the engineer salary USD 150.00 one day one person,the supply
the atrtickets for round trip,also need supply the local cost,like
food, rooms and transform.If due to the buyer reason,delay the
debugging time,the buyer need pay for the engineer USD 150.00 one
person one day.
Number of equipment commissioning engineers:At least three.
After-sales service:
Used in users abide by the rules, under normal operating equipment,
since 12 months from the date of the arrival of the equipment, such
as positively impact on the quality to use, parts damage lead to
equipment can't normal work, factory will give the repair or
replacement free of charge.The debugging time is one month,within
one month The buyer need pay for the engineer salary USD 150.00 one
day one person,the supply the atrtickets for round trip,also need
supply the local cost,like food, rooms and transform.If due to the
buyer reason,delay the debugging time,the buyer need pay for the
engineer USD 150.00 one person one day.
Number of equipment commissioning engineers:At least three.
- Technical Document Provided
●Instruction Manual (provided at the time of a month before
delivery time)
●Inspection Certificate (provided at the delivery time)
●Loading Order (Provided at the delivery time)
●Layout Drawing (provided at the time of a month before delivery
time)
●Ground Base Drawing (provided at the time of a month before
delivery time)
●Electrical Principle Diagram
●Overall Assembly Drawing of every unit of the line
●Part Diagram of Vulnerable Parts
