Mild steel pipes and is one of the low carbon steel pipes with low carbon content and the lesser hardness.

Plus a small amount of pearlite microstructure of ferrite is characterized by low hardness (HB 100-130), low intensity (σb 372 ~ 470MPa) and high plasticity (δ 24 percent to 36 percent), and formability and good weldability.

Mild steel is available in a variety of structural shapes that are easily welded into pipe, tube, tubing etc. Mild steel pipes and tubing are easy to fabricate, readily available, and relatively cheaper than other metals. The life expectancy of such steel could go up to 100 years if it is well protected. Mild Steel pipes and tubing are used for structural purpose and mechanical & general engineering purpose. It is also used for drinking water supply and the use of chlorination and sodium silicate inhibit corrosion in mild steel pipes.

Mild seamless steel pipe type

Hot rolled seamless steel pipe, Cold drawn seamless steel pipe, Carbon seamless steel pipe, Alloy steel seamless steel pipe

Mild seamless steel pipe specification:

Outer diameter:1/4"-40" (13.7mm-1016mm)

Wall thickness: 1.5mm-80mm

Length: 3m-15m

Mild seamless steel pipe production process

Hot rolling,Cold drawn, thermal expansion.cutting,etc.

Production of Mild seamless steel pipe

The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°F. After exiting the reheat furnace, the preheated rounds are turned into a tube shell in the rotary piercing mill as the billets are cross-rolled between two barrel-shaped rolls at a high speed. The seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed OD size and wall thickness for the next process. The process is carefully monitored using a state-of-the-art hot-wall measuring system. The shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers’ exacting specifications. Wall thickness is again verified using a hot-wall measuring system. After being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes. 

Mild seamless steel pipe quality inspection:

1. Our factory has its own "experimental testing center".CNAS Laboratory Accreditation Certificate

2.Control quality strictly.The first pass is the quality inspection on the production line,The second pass is full inspection of the  production quality .

3.We have got internationally recognized certificates, ISO, CE, LR,Philippine certificate,also support third-party testing,as SGS, BV, ect.

Mild seamless steel pipe feature

Carbon 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 flanging. The most advantage is increasing the ability of withstanding higher pressure.n improve material utilization, simplify the manufacturing process, save materials and processing time, such as rolling bearing rings, jackets, etc., has been widely used to manufacture steel pipe.
Widely used for liquid, gas, and steam services both above- and belowground services.
Standard of Mild seamless steel pipe