Stainless steel is significantly more resistant to fresh water corrosion than carbon steel and has excellent characteristics for use in fresh water. Austenitic stainless steel has excellent corrosion resistance in fresh water and acid river water, especially its corrosion film is less obstruction to heat conduction, so stainless steel tubes are widely used in heat exchange purposes.
Ball valve stroke is Angular,Gate valve stroke is straight stroke, Ball valve due to Trunnion ball design, its opening and closing torque value is small, so the corresponding actuator will small. Gate valve due to the disc of the valve seat of the compression force, so the overcome this friction requires great torque, the actuator with large.Ball valves generally do not need maintenance,Regular maintenance is required for gate valves due to large seat wear
Valve Leakage caused by economic loss and environmental pollution degree is different. The use of suitable packing seal and packing seal combination can improve the reliability of the valve. Valve stem is an important force parts in the valve, so stem material must have enough strength and toughness, resistance to medium, atmosphere and packing corrosion, abrasion resistance, good process performance
High-Pressure flange with wear resistance which more than ten times higher compare to quenched carbon steel as well as stainless steel.High pressure self-tightening flange is widely used in pipeline devices.
When two flanges connecting to pipeline, the flange sealing face and gasket should be uniformly pressed to ensure the stress keep same as bolt.Flange fastening should be avoid uneven force, in accordance with the symmetrical direction, cross direction, uniform and orderly fastening.
Heat treatment is to improve the mechanical properties of the material, eliminate residual stress and improve the machinability of the metal. Heat treatment processes include annealing, normalizing, aging, quenching and tempering. Heat treatment is to improve machining performance, eliminate internal stress.
Industrial gases can influence steel surface damaged or atmospheric environment affected by different weather changes. Marine atmosphere affect steel surface rust and corrosion because with big characterized by large amount of salt.
Steel is an very important building material in our life. Steel is the most afraid of rust, corrosion if during daily maintenance is improper, it is very easy to corrosion.
Stainless steel flange is widely used in large-scale pipeline,itself has very excellent performance and can effectively resist corrosion, Pitting, Rust and stainless steel is very rigid.
