1. Different processes
Seamless pipe is made of steel billets or solid tube blanks through piercing, hot rolling or cold rolling. Welded pipe is formed by bending and welding steel plate or strip.
2. Different appearance
There is no joint on the surface of seamless steel pipe. Generally, there are welding seams on the surface of welded pipe.
3. Different wall thickness
Seamless steel pipe has low accuracy and relatively thick wall thickness. The steel pipe of welded pipe has high precision and the wall thickness is usually relatively thin.
4. Different raw materials
Seamless steel tubes use steel billets or solid tube blanks. Welded pipe is made of steel plate or strip.
5. Different performance
In terms of corrosion resistance, pressure resistance and high temperature resistance, seamless steel pipe will be better than welded pipe.
6. Different prices
Seamless steel pipe is more expensive than welded pipe because its production process is more complex and its cost is higher.
7. Different functions
The seamless steel pipe is generally used as the fluid transmission pipeline required to withstand high pressure, high temperature and other special environments. Welded pipe is usually used as low pressure fluid transmission pipeline

Qi Ao Steel(Jiangsu)Co., Ltd. is located in Wuxi City, Jiangsu Province, with convenient logistics and export, and superior production and operation environment. We have our own factory, which can control every link of product quality, achieve product quality advantage, price advantage and construction period advantage, and is a foreign trade company integrating production and sales. In addition, we have also conducted in-depth cooperation with Qingshan iron and steel, Anyang Iron and steel, Maanshan Iron and steel, Shanxi Taiyuan Iron and steel, Shanghai Baosteel, etc., to provide you with a one-stop purchasing experience.

The company's main products include various specifications and sizes of carbon steel plates, carbon steel pipes, galvanized steel coils, galvanized steel pipes, round steel, angle steel, channel steel, H-shaped steel, etc., which are produced in accordance with American Standards ASTM, Japanese standards JIS, European standards EN, German standards DIN, British standards BS and other standards. The products are exported to more than 50 countries and regions such as Europe, the Middle East, the United States and Southeast Asia.