Straight welded steel pipe production process is simple, high production efficiency, low cost, rapid development. The strength of helical welded pipe is generally higher than that of straight welded pipe, and larger welded pipe can be produced with narrower billets and different welded pipe diameters with the same width billets. However, compared with straight seam tubes of the same length, the weld length increases by 30~100%, and the production speed is lower.
Therefore, the welding pipe with smaller diameter is mostly straight seam welding, while the welding pipe with larger diameter is mostly spiral welding.
1. Welded steel pipe (GB/ t3092-1993) for low pressure fluid transportation is also known as general welded pipe, commonly known as black pipe. It is used for conveying water, gas, air, oil, heating steam and other general low pressure fluid and other USES of welded steel pipe. The wall thickness of steel pipe is divided into ordinary steel pipe and thickened steel pipe. The form of pipe end is divided into non - rebar tube (light tube) and rebar tube. The specification of the steel pipe is expressed in nominal diameter (mm), which is an approximation of the inner diameter. It is customary to use inches to express that the welded steel pipe used for low-pressure fluid transportation is not only directly used for fluid transportation, but also used in large quantities as the original pipe of galvanized welded steel pipe used for low-pressure fluid transportation.
2. Galvanized welded steel pipe (GB/ t3091-1993) for low-pressure fluid transportation is also known as galvanized welded steel pipe, commonly known as white pipe. It is used for conveying water, gas, air oil, heating steam, warm water and other general low pressure fluid or other USES of hot dip galvanized welding (furnace welding or electric welding) steel pipe. The wall thickness of steel pipe is divided into ordinary galvanized steel pipe and thickened galvanized steel pipe. The pipe end is divided into galvanized steel pipe without thread and galvanized steel pipe with thread. The specification of the steel pipe is expressed in nominal diameter (mm), which is an approximation of the inner diameter. Customary use of inches, such as 11/2.
3. Ordinary carbon steel wire sleeve (gb3640-88) is a steel tube used to protect electric wires in industrial and civil construction, installation machinery and equipment and other electrical installation projects.
4. Straight welded steel tube (yb242-63) is a steel tube with longitudinal parallel weld. It is usually divided into metric welded steel tube, welded thin wall pipe, transformer cooling pipe and so on.
The above is for everyone to share the content of straight seam welded steel pipe, more content welcome you to consult hangzhou shuanghui metal materials co., LTD.