what are differences between non-welded and welded technology? Let's us see
1. Differences in pipeline installation:
Welded pipe: blow out the impurities in the pipe, pipe beveling and spot welding pre-assembly, disassembly and then argon arc welding bottom and electric welding.No welding pipeline: workshop large-scale production, one installation, no pickling, greatly shorten the installation period, can shorten 70% of the installation time.
- It is difficult to weld pipes to NaS grade 9
- Weldless piping can easily reach NaS class 7
3. Personnel requirements for pipeline installation
Welded pipeline: very high requirements for workers, welding workers must have a professional title certificate, the corresponding workers pay is also very high.No welding pipeline: low requirements for workers, simple pre-job training, according to the specified operation guide can be installed.
Welding pipeline extension, welding slag off, pollution of the hydraulic system, serious will cause damage to the main components in a short time, heavy loss
No welding pipeline, no such situation, high safety factor.
When welding pipeline itself produces leakage, maintenance is time-consuming and laborious. Especially when replacing valve block or valve, some lines are difficult to disassemble.
Non-welded pipes are easy to disassemble and basically maintenance-free. Maintenance only needs to be simple replacement of the joint body and seals.
Welded pipelines: pickling, water flushing, neutralization of sodium carbonate solution, phosphating, hydraulic oil online flushing, ultrasonic must be carried out on the main pipelines
Wave or magnetic particle inspection.
No welding pipeline: the pipeline is very clean because there is no welding spot, and the flushing time of the flaring type of the same casing pipeline system is about 10% of the welding time
Between, shorten the construction period.
It is easy to remove welding, welding slag and oxide skin under severe vibration condition
