Spiral steel pipe (SSAW) is a spiral seam steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After being rolled by multiple rollers, the strip is gradually rolled up to form a circular tube blank with an opening gap. 3mm, and make both ends of the welding joint flush.
Seamless pipe (SMLS) is a kind of long steel with a hollow section and no joints around it. It is made of steel ingots or solid tube blanks through perforation to make capillaries, and then hot-rolled, cold-rolled or cold-drawn. A large number of pipelines are used for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials.
The difference between seamless steel pipe and spiral steel pipe:
1. Different production methods.
Seamless steel pipe is made by heating and punching the billet, it is seamless, and the material needs to be determined according to demand. Spiral steel pipe is a steel pipe with a larger diameter which is formed by bending a steel strip or steel plate and continuously welding. The material needs to be changed according to the needs.
2. Different fields of application
Seamless steel pipes are usually used in high-temperature and high-pressure fluids, while spiral steel pipes are usually used in fluids under 30kg, and large-diameter ones are used in medium and low-pressure fluids. Pressure.
Seamless pipes are used in different parts according to different production standards and are mainly used in industry. Spiral pipes are mainly used for low pressure water supply, thermal power and pilot pipes.
3. The price is different
Compared with seamless tubes, the price of spiral tubes is cheaper.
