German doldr imported manual forged steel ball valve is a ball valve made of forged steel material, with excellent corrosion resistance and high strength, suitable for various corrosive and non-corrosive media. It adopts a full-bore design, which can ensure the smooth flow of fluid in the pipeline, and has the advantages of low fluid resistance and small opening and closing torque.
There are two types of structural forms of imported manual forged steel ball valves, two-piece and three-piece, with the middle threaded connection and sealed with PTFE gasket. Depending on the material of the selected valve seat and gasket packing, it can be adapted to different operating temperatures and media. It also has the advantages of good sealing performance, simple structure, small size, light weight, compact and reliable, low fluid resistance, and wide application range.
The drive mode of imported manual forged steel ball valve is manual, pneumatic, electric, hydraulic, turbine, etc., which is suitable for various industrial fields, such as petrochemical, natural gas, pharmaceutical, etc., and is used to cut off or connect the medium flow in the pipeline. At the same time, it is also suitable for various high-pressure media transportation pipelines, which can ensure sufficient strength and stiffness at the maximum rated working pressure.
Some of the parameters of forged steel manual ball valve are as follows:
Nominal pressure: pn10-16.0mpa，150-1500lb。
DN: DN8-DN50.
Seal Type: Soft Seal.
Manufacturing standards: American standard, Japanese standard, German standard, national standard.
Connection: flange, butt welding, socket welding, threading.
Valve function: shut-off.
Forged steel manual ball valve parts material:
Body material: 904L forging.
Ball material: 904L forgings.
Stem Material: 904L Forging.
Seat seals: PTFE, RTFE (reinforced PTFE), PEEK, PPL.
There are the following main differences between the manufacturing process of forged steel and cast steel:
1.Manufacturing process: Forged steel is made into a workpiece with a certain shape and size by forging the metal blank, while cast steel is to pour molten liquid metal into the cavity, which is solidified into a utensil after cooling.
2.Material: The material of forged steel is usually carbon steel, alloy steel, etc., while the material of cast steel is usually cast pig iron, carbon steel, alloy steel, etc.
3.Manufacturing process: The manufacturing process of forged steel includes the heating, forging, cooling and processing of metal billets, while the manufacturing process of cast steel includes metal smelting, pouring, cooling and cleaning.
4.Scope of application: Forged steel is suitable for manufacturing parts or blanks with complex shapes and high requirements, such as gears, shafts, etc., while cast steel is suitable for manufacturing parts or blanks with simple shapes and low requirements, such as bases, brackets, etc.
5.Advantages and disadvantages: The forged steel manufacturing process has the advantages of high material utilization, small machining allowance and good mechanical properties, but the production cycle is long and the cost is high. The steel casting manufacturing process has the advantages of short production cycle and low cost, but the material utilization rate is low, the machining allowance is large, and the mechanical properties are poor.