Carbon steel pipe and stainless steel pipe are classified by material, while seamless steel pipe is classified by forming method.
The material of carbon steel pipe is carbon steel. Most of the forming methods are welding, drawing and rolling, and a few are extrusion forming. The steel pipes drawn, rolled and extruded are called seamless steel pipes.
Welded steel pipe is called seamed steel pipe, which has welds.
Difference between carbon steel pipe and seamless steel pipe:
1. Seamless steel pipe is a kind of steel pipe without weld which is manufactured by piercing hot rolling method. Sometimes it is necessary to further cold process the hot-working tube in order to obtain the corresponding shape and size. The carbon steel pipe is generally made into round, square and flat shapes by multi rolling.
2. Seamless steel pipe is the most widely used pipe in petrochemical production plant. Carbon steel pipe is more widely used. At the same time, carbon steel pipe is the main requirement of its chemical composition is the carbon content, seamless steel pipe is a large category, refers to seamless steel pipe, a wide range.
Technological process of sanitary mirror tube: tube blank - Inspection - peeling - Inspection - heating - piercing - Pickling - grinding - Lubrication and air drying - welding head - cold drawing - solution treatment - Pickling - pickling and passivation - Inspection - cold rolling - degreasing - cutting head - air drying - internal polishing - External polishing - Inspection - Identification - finished product packaging
Process flow of industrial tube: tube blank - Inspection - peeling - Inspection - heating - perforation - Pickling - grinding - Lubrication and air drying - welding head - cold drawing - solution treatment - Pickling - Pickling - pickling passivation - Inspection
Introduction to seamless steel pipe: seamless steel pipe is a kind of circular, square and rectangular steel with hollow section and no joints around. Seamless steel tube is made of steel ingot or solid tube blank by piercing and then by hot rolling, cold rolling or cold drawing. Seamless steel pipe has a hollow section, which is widely used as a pipeline for conveying fluid. Compared with solid steel such as round steel, the steel pipe has a lighter weight when its bending and torsional strength are the same. It is an economic section steel, widely used in manufacturing structural and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffold used in construction.