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Views: 0 Author: Site Editor Publish Time: 2025-02-06 Origin: Site
When selecting the appropriate type and specification of stainless steel flange, multiple factors should be considered, including:
Pipeline parameters
Pressure and temperature: Select based on the pressure and temperature of the fluid inside the pipeline. In high-temperature and high-pressure steam pipelines, it is advisable to use butt welded stainless steel flanges that can withstand high temperature and high-pressure stress; Flat welding flanges can be used for water pipelines at room temperature and low pressure.
Pipe diameter: The size of the pipe diameter determines the flange specifications. Small diameter pipelines (such as DN15-DN50) can be equipped with flanges that can be socket welded or threaded for easy installation; Large diameter pipelines (such as DN600 and above) usually use butt welding or plate flat welding flanges to ensure connection strength and sealing.
Fluid characteristics: When transporting corrosive fluids such as sulfuric acid, hydrochloric acid, etc., 316L stainless steel flanges with strong corrosion resistance are required; When transporting flammable, explosive or toxic fluids, it is necessary to choose flanges with good sealing performance such as mortise and tenon surfaces or concave convex surfaces.
Installation and Environment
Installation space: In narrow spaces such as compact pipelines between equipment, compact socket welding flanges or loose flanges can be selected for easy installation and operation; Outdoor pipelines with open spaces have installation conditions for various types of flanges.
Environmental conditions: In outdoor environments with humidity or corrosive media, the anti-corrosion performance of flanges should be considered. In addition to selecting stainless steel material, surface treatment can also be considered; Connecting pipes to equipment with vibration can reduce the impact of vibration on the connection by using loose flanges.
Economy and Maintenance
Cost: Due to limited budget and low operating requirements, ordinary 304 stainless steel flat welding flanges have high cost-effectiveness; For key projects that require high quality and performance, although the cost of welding flanges or special material flanges is high, long-term operation is more reliable and the overall cost may be lower.
Maintenance requirements: For pipelines that require frequent disassembly and maintenance, choose threaded connections or flanges with loose sleeves; In situations where maintenance is difficult, flanges with reliable sealing and good durability should be selected to reduce maintenance frequency.
