Pipes are cylindrical, cross-section conveyors mainly used for conveying liquids and gases. While used mainly for conveyances, pipes may also be used for structural applications.
2. What are Industrial Pipe?
■ Industrial pipe is a broad category of fluid and solid transport hardware used in
many applications and industries.
■ Usually cylindrical, pipe and rigid tube is used in process, energy, construction,
and many civil infrastructure applications.
■ Industrial pipe and rigid tube are manufactured from a wide variety of materials
for the transport of an equally wide variety of solids and fluids.
■ Industrial pipe is often, but not necessarily, cylindrical in shape, and systems are
typically configured with straight sections connected by fittings or specially-
formed connections and joints.
■ It is frequently used in pressurized applications. Industrial pipe construction and
material specifications are application-dependent; user consultation with pipe
suppliers is typical for optimization of pipe selection
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3. Types of Industrial Pipes?
There are three different types of standard metal pipes –
■ Welded (ERW Pipe)
■ Seamless pipe
■ Galvanized pipe.
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4. Welded Pipe
■ Steel pipes are long, hollow tubes that are used mainly to convey products from one
location to another.
■ They are produced mainly by two distinct manufacturing methods which result in
either a welded pipe or seamless pipe.
■ In both the manufacturing methods, raw steel is first cast into a more workable
starting form (hot billet or flat strip).
■ It is then made into a pipe by stretching the hot steel billet out into a seamless pipe or
forcing the edges of flat steel strip together and sealing them with a weld.
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6. Seamless Pipe
■ Steel pipes are long, hollow tubes that are used mainly to convey products from one
location to another.
■ They are produced mainly by two distinct manufacturing methods which result in
either a welded pipe or seamless pipe.
■ In both the manufacturing methods, raw steel is first cast into a more workable
starting form (hot billet or flat strip).
■ It is then made into a pipe by stretching the hot steel billet out into a seamless pipe or
forcing the edges of flat steel strip together and sealing them with a weld.
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7. Galvanized steel pipe
■ Galvanized steel pipe is the carbon steel pipe that are coated with a protective layer of
zinc.
■ The zinc layer served as a sacrificial layer, it will get rust before the carbon steel under
neath it.
■ Galvanized steel pipe includeTwo types: hot dipped galvanized steel pipe and cold
galvanized steel pipe.
■ Galvanized layer will strengthen the anti-corrosion performances of steel pipe.
■ Galvanized steel pipe mainly used in transmission of coal gas, steam.
■ It was used as water pipe, but after several years past, there were many rust in the
pipe, and water get yellow color for carrying iron oxide.
■ The water not only polluted dishes or other sanitary ware, but also carrying bacteria
produced in the internal surface which not smooth.
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8. Sizes of Industrial Pipe
■ Size choices include standard nominal English sizes, metric sizes, wall thickness,
and pipe schedule if applicable.
■ English sizes are approximations of the pipe size; smaller size industrial pipe
carries an internal diameter (I.D.) roughly approximate to the nominal size, and
larger pipe matched the outside diameter (O.D.) more closely.
■ Metric sizes range from less than 10 millimeters up to greater than 1000
millimeters.
■ Wall thickness may be specified numerically, or a schedule size may be chosen for
pipe that conforms to the standard schedule dimensions.
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9. Material use for Industrial Pipes
■ In an industrial setting, a material is never selected by chance. During the design
phase, the characteristics of the materials must be carefully studied and
determined in order to avoid subsequent complications when in use, and to
avoiding incurring unnecessary costs.
■ This is especially the case when choosing a material to be used in a pipe.This is
because some pipes are subjected to considerable mechanical, thermal or
chemical stresses, depending on the type of fluid they carry, with pressure and
temperature paying a determining role.
■ The material used to manufacture the pipe has an influence on all the
manufacturing operations, including machining.The machinability of the pipe
depends directly on the material used to manufacture the pipe, and for each given
material, specific precautions must be taken in order to ensure good-quality
machining.
■ Machining is a common operation when preparing a piece for welding where, for
example, the pipe end has to be machined at specific angles so that the weld can
penetrate the entire thickness of the pipe material.
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10. What isTube?
■ The nameTUBE refers to round, square, rectangular and oval hollow sections that are
used for pressure equipment, for mechanical applications, and for instrumentation
systems.
■ Tubes are indicated with outer diameter and wall thickness, in inches or in millimeters.
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11. Difference between Pipe andTube?
Pipe
■ The most important dimensions for a
pipe is the outer diameter (OD) together
with the wall thickness (WT). OD minus 2
timesWT (SCHEDULE) determine the
inside diameter (ID) of a pipe, which
determines the liquid capacity of the
pipe.The NPS does not match the true
diameter, it is a rough indication.
■ The thickness of a steel pipe is
designated with a "Schedule" value (the
most common are Sch. 40, Sch. STD.,
Sch. XS, Sch. XXS).Two pipes of different
NPS and same schedule have different
wall thicknesses in inches or millimeters.
Tube
■ The most important dimensions for a
steel tube are the outside diameter (OD)
and the wall thickness (WT).These
parameters are expressed in inches or
millimeters and express the true
dimensional value of the hollow section.
■ The wall thickness of a steel tube is
expressed in inches or millimeters. For
tubing, the wall thickness is measured
also with a gage nomenclature.
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12. Continue..
■ Round only
■ Extensive (up to 80 inches and
above)
■ Tolerances are set, but rather loose.
Strength is not the major concern.
■ Round, rectangular, square, oval
■ A narrower range for tubing (up to 5
inches), larger for steel tubes for
mechanical applications
■ Steel tubes are produced to very
strict tolerances.Tubulars undergo
several dimensional quality checks,
such as straightness, roundness, wall
thickness, surface, during the
manufacturing process. Mechanical
strength is a major concern for
tubes.
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13. Continue…
■ Pipes are generally made to stock with
highly automated and efficient
processes, i.e. pipe mills produce on a
continuous basis and feed distributors
stock around the world.
■ Can be short
■ Relatively lower price per ton than steel
tubes
■ A wide range of materials is available.
■ The most common are beveled, plain
and screwed ends
■ Tubes manufacturing is more lengthy
and laborious.
■ Generally longer
■ Higher due to lower mills productivity
per hour, and due to the stricter
requirements in terms of tolerances and
inspections.
■ Tubing is available in carbon steel, low
alloy, stainless steel, and nickel-alloys;
steel tubes for mechanical applications
are mostly of carbon steel
■ Threaded and grooved ends are available
for quicker connections on site.
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