What is a butterfly valve?
Butterfly valve, also known as flap valve, is a simple control valve, which can also be used for the on-off control of low-pressure pipeline medium. Butterfly valve refers to a kind of valve whose closing piece (disc or di ... 閱讀更多
In recent years, with the increase of oxygen consumption, oxygen pipelines are used by large oxygen users. Due to the long pipeline and wide distribution, and the quick opening or closing of valves, the combustion and explosion accidents of oxygen p ... 閱讀更多
What is self tapping screw?
As the name implies, it simply means a screw that can be tapped by itself. The difference between self-tapping screw and general screw is that the general screw must have a machined screw hole to screw in. Self tapping sc ... 閱讀更多
How can flanges be classified based on Pressure – temperature ratings?
Flanges are classified based on Pressure – temperature ratings as:
A. 150 #
B. 300 #
C. 400 #
D. 600 #
E. 900 #
F. 1500 #
G. 2500 #
Pressure temperature rating carts in the standard ASME16.5 specify the non-shock working gauge pressure to which the flange can be subjected t ... + 閱讀更多
How can flanges be classified based on facing?
Flanges are classified based on facing as:
A. Flat face. (FF)
B. Raised face. (R/F)
C. Tongue and groove. (T/G)
D. Male and female. (M/F)
E. Ring type joint. (RTJ)
Different types of flange faces are used as the contact surfaces to seat the sealing gasket material. ASME ... + 閱讀更多
How can flanges be classified based on face finish?
Flanges are classified based on face finish as:
A. Smooth finish
B. Stock finish
Flange face finish
The ASME b16.5 code requires that the flange face (raised face and flat face) has a specific roughness to ensure that this surface be compatible with the gasket and provide a high quality ... + 閱讀更多
What is the difference between pipe and tube?
The difference between steel tubes and steel pipes:
1. Pipe Diameter and Tube Diameter
Steel tube is generally used for structural purposes and the OD is an important and exact number. Steel tube size is specified by OD and the wall thickness (WT); and the measured OD and stated OD are general ... + 閱讀更多
What is detail of nominal pipe size?
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. The name NPS is based on the earlier “Iron Pipe Size” (IPS) system.
That IPS system was established to designate the pipe size. The size represented the appr ... + 閱讀更多
How the valves are classified based on their function?
A pipe fitting is defined as a part used in a piping system, for changing direction, branching or for change of pipe diameter, and which is mechanically joined to the system. There are many different types of fittings and they are the same in all sizes and schedules as the pipe.
... + 閱讀更多
What are details of ASME B16.11 socket weld fittings?
Socket Weld fittings
A Socket Weld is a pipe attachment detail in which a pipe is inserted into a recessed area of a Valve, fitting or flange. In contrast to buttweld fittings, Socket Weld fittings are mainly used for small pipe diameters (Small Bore Piping); generally for piping whose nominal diameter ... + 閱讀更多