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Corrosion Prevention Measures for Metal Valves

1 Overview Corrosion is one of the main causes of damage to metal valves. The corrosion of metal valves is mainly electrochemical corrosion. In the use of valves, the first consideration of corrosion protection is to eliminate electrochemical corrosion. When electrochemical corrosion can not be eliminated, passivation film should be formed on the metal surface, or non-metallic materials should be used instead of metal materials to control the occurrence of corrosion. 2 Elimination of electrochemical corrosion 2.1 Material Selection Many mediums are corrosive, and their corrosion principle is very complex. Even if the same valve material is used in the […]

2019-07-13

Effect of solid solution treatment on the quality of the stainless steel pipe ……

The production cost of stainless steel pipe fittings should be considered, but the factors of preventing corrosion and improving product quality should also be taken into account. Therefore, it is necessary to adopt solid solution process in the production process of stainless steel pipe fittings to enhance the safety of pipe fittings. Heat treatment process plays a vital role in the quality and safety of pipe fittings. It is known that in order to save cost in the production of pipe fittings, a few enterprises did not take solid solution treatment, only used polishing and sandblasting methods to deal with […]

2019-04-22

Causes and elimination methods of pipeline vibration

Common pipeline vibration Oil pipeline vibration Water pipeline vibration Steam pipeline vibration Extraction pipeline vibration Live steam pipeline vibration The heating pipeline is vibrating Harm of pipeline vibration In the rotating equipment and flowing medium of the unit, low-intensity mechanical vibration is unavoidable. The mechanical vibration of the rotating equipment is transmitted to the system piping through the system connecting parts and medium, which poses a great threat to the safe operation of the unit. The hazards of pipeline vibration mainly include the following: Hazard to the staff: Interfere with the vision of the staff, reduce the construction efficiency; the […]

2019-03-13

Types of Ball Valves

Ball valves are quarter-turn valves used in residential, commercial, and institutional applications to control the on-off flow of liquids and gases. They are available in a range of sizes, materials, and connection types. The major components of a ball valve are: The Valve Body – A pressure vessel that contains the components needed to control or shut off the flow through a pipe. It is designed to connect two or more sections of pipe or tubing to each other. The Ball – A sphere with a flow path (hole or tunnel) through the center of it and a connection point for a […]

2019-02-14

How to select the right electric actuators for forged steel valve

Electric actuator of forged steel valve is an indispensable driving device for forged steel valve program control, automatic control and remote control. The movement process can be controlled by the stroke, torque or axial thrust. The working characteristics and utilization of the forged steel valve electric device depend on the type of forged steel valve, the operating specifications of the device and the position of the forged steel valve on the pipeline or equipment. 1. Forged steel valve electric actuators generally consist of the following parts: Specific motor, characterized by strong overload capability, large starting torque, small rotational inertia, short working […]

2019-01-28

What is a HFW steel pipe?

What is a HFW steel pipe? High frequency welded pipe is based on solid resistance heat energy. Resistor thermal welding, using high-frequency current is generated in the workpiece so that the surface of the workpiece weld zone is heated to the melting or close to the plastic state, then applied (or not applied) upsetting force is achieved for such a steel pipe of the metal combination. HFW steel pipe production rate, welding speed of up to 30m/min. It is mainly used for the manufacture of pipes welded longitudinal seam or spiral seam. The welded pipe used high-frequency welding process of […]

2018-12-05

What is a seamless steel tube?

What is a seamless steel tube? The seamless steel tube is a long strip of steel having a hollow section and no seams around it. Seamless steel tube is generally used for structural purposes and the OD is an important and exact number. Tubing size is specified by OD and the wall thickness (WT); and the measured OD and stated OD are generally within very close tolerances of each other. Seamless steel tube is usually more expensive than seamless steel pipe due to tighter manufacturing tolerances. 1 Characteristics 4 Pipes vs. Tubes 2 Types 5 Tube size 3 Process 6 Pipe size Characteristics And Uses Of Precision […]

2018-11-28

Difference between steel pipe and steel tube

What is a steel pipe? A steel pipe is a round hollow section manufactured by drawing a solid billet (in carbon, alloy, stainless or nickel alloy steel) through a piercing rod. Seamless pipes are considered superior to welded pipes as they are built using monolithic steel billets, with intrinsic mechanical strength, without seam welds. Seamless steel pipes are used for the transmission and distribution of oil, gas, steam, and chemicals. Stainless steel seamless pipes offer enhanced resistance to corrosion at high temperature and pressure. What is a steel tube? Steel tube can be divided into seamless steel tube and welded steel tube. Generally […]

2018-11-21

What is SSAW steel pipe?

What is SSAW steel pipe? Spiral submerged arc welded steel pipe refers to a metal pipe with a spiral seam welded by a submerged arc welding process. 1 Application 2 Characteristics 3 Production technology 4 Raw material 5 Process performance 6 Standard classification 1 Application of SSAW steel pipe Generally used in: welding into pipes for fluid transport, metal structures, pile foundations, etc. The products are widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction, and are one of the 20 key products developed in China. For liquid transportation: water supply and drainage. […]

2018-11-14

Hot push forming process for stainless steel elbow

What is the hot push forming process for stainless steel elbow? The stainless steel elbow hot push forming process uses a special elbow pushing machine, a core mold and a heating device, so that the blank placed on the mold moves forward under the push of the pusher, is heated, expanded, and bent during the movement. The process of forming. The deformation characteristic of the hot thrust of stainless steel elbow is to determine the diameter of the blank according to the law of the volume change before and after plastic deformation of the metal material. The diameter of the […]

2018-11-07

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Corrosion Prevention Measures for Metal Valves

Effect of solid solution treatment on the quality of the stainless steel pipe ……

Causes and elimination methods of pipeline vibration

Types of Ball Valves

How to select the right electric actuators for forged steel valve

What is a HFW steel pipe?

What is a seamless steel tube?

Difference between steel pipe and steel tube

What is SSAW steel pipe?

Hot push forming process for stainless steel elbow