Customized products
Application of Seamless steel tube
SPECIFICATIONS
Application of Seamless steel tube
Seamless steel tube has a hollow cross section and is widely used as a pipeline for conveying fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, steel pipe has the same bending and torsional strength, lighter weight, and is a kind of economic section steel. It is widely used in manufacturing structural and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffold used in construction. It can improve material utilization, simplify manufacturing process, save materials and add more. Man-hour has been widely manufactured with steel pipes.
Small-caliber seamless steel tube
Small-diameter steel pipe can be called small-diameter seamless steel tube. At the same time, small-diameter steel pipe is also a kind of seamless pipe. Small-diameter steel pipe can also be divided into seamless small-diameter pipe and straight-seam small-diameter pipe. Generally, the outer diameter of the pipe is below 89mm, and the wall thickness is above 4mm; they can be collectively called small-diameter seamless steel pipe.
Next, we will give you a detailed understanding of Qingdao small-caliber seamless pipe:
Small-caliber seamless pipe is generally between 6mm and 89mm in diameter, which is commonly called small-caliber seamless pipe because its diameter is relatively small. Thickness in 1mm-12mm, in fact, can also be divided into: small diameter thick-walled seamless tube, small diameter thin-walled seamless tube. The specification of small diameter seamless pipe is usually expressed by outer diameter * wall thickness. Small diameter seamless pipe can be divided into hot-rolled seamless pipe and cold-rolled seamless pipe according to the production method. Hot-rolled seamless steel pipes are divided into general steel pipes, low and medium pressure boiler pipes, high pressure boiler pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes. Cold-rolled seamless steel pipe is divided into general steel pipe, low and medium pressure boiler pipe, high pressure boiler pipe, alloy steel pipe, stainless steel pipe and petroleum cracking pipe.
For the installation and use of seamless steel tube, there are strict technical requirements, according to the actual situation, but also in accordance with the operating procedures, to ensure safety and quality. In the ordinary use process, the seamless steel tube needs to pay attention to the following points:
1. Construction preparation for seamless steel pipe before use: Pipeline trench should be excavated, pipe well bricklaying completed, various types of seamless steel pipe needed in place, all kinds of tools needed, including welding machine, cutting machine, hammer, polishing machine, etc. are ready, only a series of preparatory work can start installation.
2. Installation of seamless steel pipes: Pipeline positioning is carried out according to the design of drawings, pipe brackets are prefabricated according to the site conditions, and blanking is carried out according to the design and site, then groove is ground by a polisher, and then welding is carried out.
3. Quality requirements for use:
A. The deviation of vertical installation risers per meter should be less than 3 mm, and that of horizontal installation should be less than 1 mm.
B. No brackets should be welded at the weld seam, and no welds should be avoided at the bend. C. Require straight weld, full weld, no burnout and cracks on the surface of the weld.