HDPE Butt fusion machines
HDPE BUTT FUSION MACHINES
Butt fusion is a thermofusion process which involves the simultaneous heating of the ends of two pipe/fitting components which are to be joined, until a molten state is attained on each contact surface. The two surfaces are then brought together under controlled pressure for a specific cooling time and a homogenous fusion joint is formed. The resultant joint is fully resistant to end loads and has comparable performance under pressure to the pipe itself.
An electrical heater plate is used to raise the temperature of the pipe ends to the required fusion temperature. Butt-fusion can be used to join both PE80 and PE100 materials for the pipe sizes of 90mm and above of the same SDR.
The butt welding machines used to weld PE pipes have controls to ensure the welding parameters are strictly adhered to. The following parameters are controlled:
- heater plate temperature
- ovality and alignment
- interface pressure
- bead width
- heat soak time
- changeover time
Control of these is necessary to ensure premature failure of the weld does not occur. The field conditions under which PE pipe is welded have a considerable effect on the strength of the joint. In order to achieve an acceptable weld three elements are essential:
- Cleanliness: because contamination will ruin joints
- Technique: Most owners of PE pipe systems require that people performing butt welding of PE pipes are qualified by completing a recognized training course.
- Correctly designed equipment with proper maintenance: Correct welding temperatures, welding procedures and pipe facing tools must be maintained in tolerance and in good condition.
The resulting joint, if it has been properly made, is as strong as the original pipe and can withstand all the loads applied during routine installation and operation.
During the fusion process internal and external ‘weld beads’ are formed. Techniques have been developed to minimize the size of the beads, however as they do not add anything to the overall strength they may be safely removed if required. The removed weld beads can be inspected as part of a quality control programme.
在线联系供应商
Other supplier products
 |
SWT-PAU Thermofusible linoleum joinning and hemming welder reinforced the table | Product Description Specification Condition New Place of Origin China Hebei Brand Name MM-Tech Voltage 2... |
 |
SWT-UME soldering machine for hemming the margin | Tarpaulin Welding Heat Gun,Repairing tarps with hot air gun,Automatic tarpaulin welding machine for PE fabric,Banner & Tarpaulin Welder,Hot ai... |
 |
SWT-NS900D Hot Wedge Welder | Geomembrane Welding MachineSWT-NS900MM-Tech BrandGeomembrane Welding Machinesis our new developed products, which can weld geomembrane of various t... |
 |
HDPE Welding Machine | SWT-V630/315H Polyethylene Pipe Butt Welding Machine Application Suitable for butt welding of plastic pipes and fittings made of PE,PP, and PVDF in... |
 |
Geomembrane Welder |
Same products
 |
Portable Handheld Fiber Laser Welder – Water Cooling for Industrial Use | 卖方: Beijing JCZ Technology Co., Ltd | This portable handheld fiber laser welderis designed for industrial-grade welding operations. It ... |
 |
Nozzle adjustment gauge | 卖方: Weldy China Distributor Co.,LTD | Article127.826Item nameNozzle adjustment gaugeBrandWeldyCountry of originP.R. China |
 |
Guide bar | 卖方: Weldy China Distributor Co.,LTD | Article126.096Item nameGuide barBrandWeldyCountry of originP.R. China |
 |
Heating wedge, stainless steel | 卖方: Weldy China Distributor Co.,LTD | Article156.668Item nameHeating wedge, stainless steelVoltage230 VHot wedge materialStainless stee... |
 |
Heating wedge, aluminum | 卖方: Weldy China Distributor Co.,LTD | Article156.563Item nameHeating wedge, aluminumVoltage230 VHot wedge materialHard ematalised alumi... |
