Comparison of non-welding and welding
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.
Differences in cleanliness:
It is difficult for weld pipes to meet NaS grade 9
Non-welding piping can easily reach NaS class 7
Welded pipeline: very high requirements for workers, welding workers must have a professional title certificate, the corresponding workers pay is also very high.
Non 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
Non 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.
Non 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.
Differences in vibration conditions
Under the condition of severe vibration, welding pipeline is easy to disweld, welding slag and oxide scale, which is easy to form leakage points or cause pipeline pollution.Non welding pipeline to solve this problem, suitable for severe vibration conditions.
