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Differences between spiral steel pipe and seamless steel pipe
Spiral steel pipes and seamless steel pipes are relatively common pipes in life, and they are used in house decoration and construction. So what is the difference between spiral steel pipes and seamless steel pipes? What is a spiral steel pipe? Spiral steel pipe (SSAW) is a spiral seam steel pi...Read more -
Precautions for storage and transportation of large diameter spiral welded pipe
What are the precautions for storage and transportation of large-diameter spiral welded pipes? The following editor will introduce it to you. 1. Pipe packaging should be able to avoid loosening and damage during normal loading, unloading, transportation and storage. 2. If the buyer has spe...Read more -
Role of Welding Preheating
Preheating means a process that heat weldments in whole or in weld areas before welding. Particularly good material for welding high strength level, hardening tendency of steel, thermal conductivity, thickness larger weldments, and when the ambient temperature is too low,welding zone often requir...Read more -
Manufacture and application of seamless steel tube
Seamless tubes are tubes without seams or welds. Seamless steel tubes are considered to be able to withstand higher pressures, higher temperatures, higher mechanical stress and corrosive atmospheres. 1. Manufacturing Seamless steel tubes are manufactured using a number of different methods. The m...Read more -
The importance and advantages of anti-corrosion steel pipe
Anti-corrosion steel pipes play important and different roles in people’s daily life. Anti-corrosion steel pipes generally refer to the use of special processes to carry out anti-corrosion treatment on ordinary steel pipes (such as seamless pipes, welded pipes), so that the steel pipes have...Read more -
ERW pipe standard
ERW pipe standard are as follows: API 5L, ASTM A53 B, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672 API 5L Standard aims to gas and water in oil and gas industry for reference, which is used for seamless steel pipe and welded steel pipe,including common port and port, pipe socket port...Read more -
Principle of automatic butt welding machine for steel pipe
The preheating flash welding process: before the continuous flash welding is stopped, the welding machine is preheated to the reinforcing steel. Clamp the steel bar on the jaw of the butt welder. After the power is turned on, the open end is used to make the end face of the steel bar smash with l...Read more -
How to choose a high-quality seamless steel pipe manufacturer?
Most industries have relatively high requirements for seamless steel pipes, and steel pipes need to be purchased in batches during construction. Naturally, it is still necessary to measure the price and pay attention to the choice of manufacturers. So how to choose a high-quality seamless steel p...Read more -
Hot-expanded seamless steel pipe manufacturing process – cross rolling
Cross rolling is a rolling method between longitudinal rolling and cross rolling. The rolling of the rolled piece rotates along its own axis, deforms and advances between two or three rolls whose longitudinal axes intersect (or incline) in the same direction of rotation. Cross rolling is mainly u...Read more -
Cross-rolling piercing process and quality defects and their prevention
The cross-rolling piercing process is the most widely used in the production of seamless steel pipes, and was invented by the German Mannesmann brothers in 1883. The cross-rolling piercing machine includes two-roll cross-rolling piercing machine and three-roll cross-rolling piercing machine. The ...Read more -
Surface processing defects of seamless tubes and their prevention
Surface processing of seamless tubes (smls) mainly includes: steel tube surface shot peening, overall surface grinding and mechanical processing. Its purpose is to further improve the surface quality or dimensional accuracy of steel tubes. Shot peening on the surface of seamless tube: Shot peenin...Read more -
Factors affecting the quality of seamless tubes
There are two categories of factors that affect the quality of seamless tubes: steel quality and rolling process factors. Many factors of the rolling process are discussed here. The main influencing factors are: temperature, process adjustment, tool quality, process cooling and lubrication, remov...Read more