Difference Between seamless steel pipe and Welded Pipe | Stainless Steel Pipe

Posted by Unisteel & engineering on October 30th, 2019

The mainly various molten processes are Seamless steel pipe and welded pipe. Welded steel pipes, like the water pipes, can be found in the above, usually through the flat plate by the soldering of the pipe after bending up. The seamless stainless steel pipe is typically the molten stain through the backlog's ring split and extends before processing, such as molding, to make it seamless. It is often used in high-voltage devices when compared with regular steel performance has dramatically improved, especially on the capacity of the bearing.

Stainless steel pipe is a kind of hole cross-section, no stitches around the circle, rectangular steel. The welded steel pipe weld area is a weak link; welding quality also impacts the overall performance of the main factor Seamless tubing. The capillary tube is constructed out of a seamless steel tube or solid steel metal through the hole and then through a hot-walled, fast-rolling, and cold call.

 Usage:

Seamless stainless steel tube is stronger than ERW welded steel pipe; strength is lower. It is therefore used extensively in high-pressure equipment and thermal boiler industries.

The welding seam of the sold steel pipe is generally the weak point, and quality has an overall effect on performance.

Generally speaking, the pressure of welded steel pipes can be a 20% reduction compared to seamless ones. This reliability is the key reason why seamless steel pipes are used. In fact, seamless tubes are used in all industrial pipelines only because the tubes are extremely thermal, chemical, and mechanical workloads are needed.

Welding performance:

The chemical composition has a certain disparity, Typically soldered pipes, and seamless steel pipes. Seamless steel component production is only astm the fundamental requirements. The chemical composition of the seamless steel pipe is somewhat different than the seamless steel pipe and the seamless steel pipe. The manufacture of seamless steel components is only necessary. Produce the chemical composition seamless stainless steel pipe steel suitable for welding. For example, in the welding process with easy heat transfer weld, silicone, sulfur, manganese, oxygen, and triangular ferrite and other components may be mixed with a certain amount, so the whole weld penetration is achieved.

Grain size: 

Normally, metal's grain size and the temperature of the heat treatment, and maintaining the same time temperature. The seam and seamless steel pipes are, therefore, the same width as rice. If the slit pipe is cold minimally, the grain size of the welding metal is less than the grain size and the grain size otherwise is the same. The original seamless tubing sizes of maximum ODs are produced in 20 "(508 mm) for most China-based seamless steel tube companies. Where the equipment limits are generally smaller than 16 inches, 406.4 mm.

Strength: 

The pipe strength depends on the structure of the alloy, which includes the same alloy and is essentially the same seamless and seamless pipe heat treatment. The tear Welded Pipe takes place nearly exclusively in a place away from the soldering point or heated areas after tensile testing and tri-dimensional vibration testing. It is because the soil impurities are lower, and the amount of nitrogen is higher, and so the solder performance in other sections increases. However, a slit pipe may provide only 85% of the license pressure, due to the data collection as early as welding equipment used in today's use. ASME Boiler and Pressure Vessel Association.