Straight Seam Hf Welded Pipe Mill Best Quality
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 set
- Supply Capability:
- 100 set/month
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The introduction of straight seam HF welded pipe mill
The plate in certain width after slitting line and stripping is unfolded and bent into pipe state. The edge of the steel plate is melted by making use of the proximity effect and skin effect of high frequency current. Then, the plate is extruded and welded into the pipe by extruding roller. Straight seam welded pipe mill also is called ERW mill.
The forming styles of straight seam welded pipe can be divided into roll
forming，cage forming, flexible forming, full auto flexible forming. The mill developed by our company adopts roll forming when having small diameter （Φ≤114） The cage forming is adopted when having middle or small diameter （Φ≤165）. Full auto flexible forming is adopted when having large diameter（Φ≤711）.
According to the products functions, straight seam welded pipe mills are divided into API model, national standard model.
API model mainly produces high level steel pipes, such as delivery pipe of petroleum and natural gas, oil well casing and so on. The requirements for material and quality are very strict. The mill is equipped with section equipment and technological equipment, such as IF annealing, air-cooled roll table, ultrasonic inspection, and high pressure hydraulic pressure testing machine, and drifter and so on.
National standard model mainly produces the steel pipe, such as water-gas pipe, structure pipe and so on.
Forming & sizing section
4.1 Forming mill gearbox, universal joint
4.1.1 Mill entry flattener by up-horizontal roll and below-horizontal roll, one positive five-roll flattener, one pair of feeding vertical roll.
4.1.2 Forming mill consists of:
- Driven stand: 7 sets (Horizontal)
- Driven stand shaft: Φ 100mm
- Material of shaft: 40Cr
- Side roll stand: 8 sets(Vertical)
- Side roll stand shaft: Φ60mm
- Material of shaft: 40Cr
- Gear box & universal joint: 7sets
- Material of gear box: cast steel
- Material of gear: 20CrMnTi
- Main motor: 132kW Model: Z4-250-31 1 set
- Main redactor: 1 set
- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.
4.2 Sizing mill gear box, universal joint
4.2.1 Sizing mill consist of:
- Driven stand: 5 sets (Horizontal)
- Driven stand shaft: Φ 100mm
- Material of shaft: 40Cr
- Side roll stand: 5 sets (Vertical)
- Side roll stand shaft: Φ60mm
- Material of shaft: 40Cr
- Gear box & universal joint: 5 sets
- Material of gear box: cast steel
- Material of gear: 20CrMnTi
- Main motor: 110kW Model: Z4-250-11 1 set
- Main redactor: 1 set
- 2 set single head Turk’s head, with 4 rollers*2sets
- One speed testing roller with air cylinder for CNC flying saw
- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.
Model | Round Pipe OD(mm) | Sq.&Rect.Pipe(mm) | Wall Thickness (mm) | Max.Speed(m/min) |
HG20 | Φ8-Φ20 | 8*8-20*20 | 0.3-1.2 | 30-120 |
HG32 | Φ10-Φ32 | 10*10-30*30 | 0.4-2.0 | 30-100 |
HG50 | Φ12-Φ50 | 13*13-40*40 | 0.5-3.0 | 30-90 |
HG60 | Φ20-Φ76 | 15*15-60*60 | 0.8-3.5 | 30-90 |
HG76 | Φ25-Φ76 | 20*20-60*60 | 1.5-4.0 | 20-80 |
HG114 | Φ48-Φ114 | 40*40-90*90 | 1.5-4.5 | 20-70 |
HG140 | Φ50-Φ140 | 40*40-110*110 | 1.5-5.0 | 20-60 |
HG165 | Φ60-Φ165 | 50*50-130*130 | 1.5-5.0 | 20-60 |
HG219 | Φ89-Φ219 | 70*70-170*170 | 2.0-6.0 | 20-50 |
HG273 | Φ89-Φ273 | 70*70-200*200 | 2.0-8.0 | 20-50 |
HG325 | Φ114-Φ325 | 90*90-250*250 | 3.0-10.0 | 15-40 |
HG355 | Φ114-Φ355 | 90*90-280*280 | 4.0-12.7 | 15-40 |
HG377 | Φ114-Φ377 | 90*90-300*300 | 4.0-14.0 | 15-40 |
HG406 | Φ165-Φ406 | 130*130-320*320 | 4.0-14.0 | 15-30 |
HG508 | Φ219-Φ508 | 170*170-400*400 | 5.0-16.0 | 15-30 |
HG630 | Φ219-Φ630 | 170*170-500*500 | 6.0-19.0 | 15-25 |
- Q: A roll forming machine, rolling out of the length is always not up to a fixed size, not too small, that is, more than that, what is the cause?
- Maybe there is something wrong with that roller. It rolls out of the wrong angle and the size will be out of order.
- Q: What is rolling forming processing?
- Ironing the surface of the workpiece with a raised micro wave crest to fill the concave micro troughs, thus changing the distribution of the peaks on the surface, and obtaining smaller surface roughness values.
- Q: Improvement in rolling forming process
- The utility model has the advantages of short service life, easy damage and high comprehensive use cost.
- Q: Introduction of roll forming process
- Roll forming began around 1960s in europe. Because of roll forming, the working model has the advantages of high production efficiency, saving material and increasing product strength.
- Q: What kind of material and what heat treatment are used for pressing roller (molding, feeding, cutting force, heavy load, heavy load) of sheet steel rolling machine?
- Generally speaking, to consider the use of rollers in the requirements, including: 1., good wear resistance, 2. toughness, 3., high hardness, 4. hardened layer (easy to wear after repeated repair)
- Q: What is the surface rolling forming machine process?
- The rolling process using metal at room temperature, cold plastic characteristic, through the rolling tool is the rolling tool to put some pressure on the metal surface, so that the workpiece surface by plastic deformation, the height to the lower tissue slip, the surface roughness decreased.
- Q: Process mould for rolling forming process
- Rolling forming is more complicated and requires higher than rolling thread. The die design is based on the different shapes of the workpiece, the design of the rolling plate into a cross section or a few sections, can use synchronous type; also can use grading type.
- Q: Material and equipment for roll forming process
- Rolling process is a cold forging process, which can be used for rolling and forming a lot of materials. Among them, low carbon steel is a material commonly used in rolling forming, and non-ferrous metal is more suitable for roll forming.
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Straight Seam Hf Welded Pipe Mill Best Quality
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 set
- Supply Capability:
- 100 set/month
OKorder Service Pledge
OKorder Financial Service
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