Seamless Steel Tube

Item: ASTM seamless steel tube/ EN seamless steel tube
Type:ASTM A106 seamless steel pipe,,ASTM A53 seamless steel pipe,ASTM A795 seamless steel pipe,EN10255 seamless steel tube,EN10216-1 Seamless steel tube
Certification:UL Listed / FM Approved
Standard: ASTM A106,ASTM A795,EN10255
Length: 6m / 5.8m / 11.8m / 12m, customized
End: Plain (square cut) / beveled to 30° / roll groove as AWWA C606 / NPT thread as ANSI B1.20.1 / BSPT as ISO 7-1
Surface: Red paint / red epoxy resin or polyester / hot dip galvanized / black paint, etc.

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Product Description

Products Details

Seamless steel pipe (SMLS) is formed by drawing a solid billet over a piercing rod to create the hollow shell, without welding or seam. It is suitable for bending and cutting. The advantage of seamless steel is the ability of withstanding higher pressure.

Product Drawing

What’s the difference between seamless steel pipe and ERW steel pipe ?

Seamless steel pipe is a long steel with a hollow section and no joints around the perimeter.

Seamless steel pipe has a hollow section, a large number of used as a pipeline to transport fluids, steel pipe and round steel and other solid steel, in the bending and torsional strength is the same, light weight, is an economic section steel, widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle racks and steel scaffolding used in building construction.
Seamless steel pipes are widely used. General-purpose seamless steel pipes are rolled by ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipes or structural parts for transporting fluids.

2. According to different uses, it is divided into three categories of supply:
a. Supply according to chemical composition and mechanical properties;
b. Supply according to mechanical properties;
c. Supply according to hydrostatic test. Steel pipes supplied according to Class A and B, if used to withstand liquid pressure, should also be subjected to hydrostatic tests.

3. Seamless tubes for special purposes include seamless tubes for boilers, seamless steel pipes for geology and seamless tubes for petroleum.

Welded steel pipe, also known as welded pipe, is a steel pipe made of steel pipe made by welding after curling and forming of steel plate or steel strip. The production process of welded steel pipe is simple, the production efficiency is high, there are many varieties and specifications, and the equipment is small, but the general strength is lower than that of seamless steel pipe.

The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is relatively fast. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes, and larger welded pipes can be produced with narrower blanks, and welded pipes with different diameters can also be produced with the same width of blanks. However, compared with the straight seam pipe of the same length, the weld length is increased by 30~100%, and the production speed is lower.
Therefore, most of the smaller diameter welded pipes use straight seam welding, and the large-diameter welded pipes mostly use spiral welding.

Application and Case

Seamless Steel Tube are used in fire protection system, water system, HVAC system, plumbing, gas system, irrigation system, etc.Steel Pipe are used in many projects , such as Beijing Airport, Shanghai World Trade Center, Canton Tower and other famous landmark projects.