What Is Seamless Steel Pipe And Types Applications

Seamless Steel pipes, often referred to as SMLS pipes, are manufactured without
any welding or seams. The process involves heating a solid billet and then
stretching it over a series of mandrels to form a hollow tube. This results in
a pipe with uniform structure and strength throughout its length.

Key Features and Benefits
Seamless pipes are known for their high strength and uniformity. The absence of
seams eliminates the risk of weak points, making these pipes capable of
withstanding high pressure and harsh conditions. They are particularly well-
suited for applications requiring reliable and durable pipes.
Due to the seamless design, its structure is more compact, so it has better
strength and pressure resistance.

The bursting pressure is 30%~50% higher than that of the same specification
welded pipe, with outstanding pressure bearing capacity, suitable for high
temperature and high pressure environment.
Main Applications of Seamless Steel Pipe:
1.Oil and Gas Industry:
Seamless steel pipes are commonly used for transporting oil and gas, especially
in high-pressure, deep-sea, and cold environment applications. Due to their
strength and durability, they provide long-lasting performance in corrosive
environments.
Seamless pipes are also used in oil drilling equipment, such as drill pipes,
tubing, and casing.

2.Chemical and Refining Industries:
Seamless steel pipes are widely used in chemical pipeline systems for
transporting aggressive chemicals, including acids, alkalis, and
petrochemicals, thanks to their superior resistance to corrosion and high
temperatures.
In refineries, seamless steel pipes are used in high-temperature and high-
pressure reactors, heat exchangers, and other equipment.

3.Power Industry:
In the power industry, seamless steel pipes are essential for steam pipelines,
boilers, and heat exchangers. They must be able to withstand high temperatures
and pressure, making seamless pipes an ideal choice.
They are also used in power plant systems, including steam and cooling water
circuits.

4.Mechanical Manufacturing:
Seamless steel pipes are used in a variety of mechanical manufacturing
applications, such as hydraulic systems, structural parts, bearing sleeves, and
machine tool beds, where high strength and wear resistance are required.
Components of vehicles, such as automobiles and motorcycles, often use seamless
steel pipes, including the chassis, engine components, and suspension systems.

5.Construction Industry:
In construction, seamless steel pipes are used for load-bearing structures and
support frames, providing strong durability and resistance to deformation.

6.Medical and Food Processing Industries:
Stainless steel seamless pipes are used in medical devices, such as vascular
stents, infusion tubes, and food processing equipment (like pipelines,
refrigeration systems) due to their excellent corrosion resistance and bio-
compatibility.

7.Automotive Industry:
In the automotive industry, seamless steel pipes are used in the manufacture of
chassis, suspension systems, exhaust pipes, and other critical components,
especially where high strength and durability are required.

8. Aerospace Industry:
In aerospace, seamless steel pipes are used in aircraft engines, spacecraft
structures, and other essential components that must withstand extreme
conditions of pressure, temperature, and mechanical stress.

Specification of ASTM Seamless Pipe
The standard used for ASTM seamlelss pipes is ASME B36.10M or ASME B16.19M.

The size range from 1/8 inch to 48 inche. There are also various specifications
for wall thickness, such as SCH40, STD, XS, SCH80, SCH160, XXS, etc.

Different wall thickness specifications are suitable for different application
environments and pressure requirements.

Minimum Order: 10 pieces

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