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suli lee

Premium Author suli lee

Changsha, Hunan, China

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In general, the straightness of the edge of the coil head and coil end is easily exceeded, and defects and defects such as heavy skin, folding, scab, crushing, scratching, etc. are prone to occur, and...
Polyurethane foam has good mechanical properties and thermal insulation properties. It can withstand 120°C under normal conditions. It can withstand 180°C by modifying or combining with other insulati...
LSAW steel pipe and SSAW steel pipe are important production processes in the national production and construction. They have many differences, such as material properties, production processes, and f...
The oil casing pipe is a high-end product for steel pipe production. There are many types of casing, and there are a total of 15 types of casing diameter specifications. The outer diameter range is 11...
Large diameter spiral steel pipe is a general name, generally refers to a spiral steel pipe with a diameter greater than 1 meter. Spiral steel pipes are made by bending and then welded.
Coal mine gas drainage ribbed galvanized spiral steel pipe before the formation of the working raw materials that steel coil, welding wire, flux. Have to go through rigorous physical and chemical test...
The carbon steel pipe is closely related to human life and production activities. The production technology of the steel pipe industry not only develops rapidly, but also introduces new ones. Steel pi...
In the coating process of anticorrosion and carbon steel pipe coating, the quality of the project often presents the same problem, that is, the coating bites at the bottom, foaming in some areas, and ...
At present, commonly used welded steel pipes can be divided into three types of continuous welding (forging) steel pipes, electric resistance welding steel pipes and arc welded steel pipes according t...
Although the relatively cool cooldown of this type of weld encountered in 10 seconds was somewhat longer, the longer time was determined for experimental repeatability and the need to simulate a high ...
ERW pipe weld zone tensile properties and corrosion resistance will cause a certain degree of damage.
Non-destructive testing shall be carried out after the appearance inspection is carried out. Radiographic and ultrasonic testing shall be carried out after the surface is tested for non-destructive te...
Production methods such as UOE method, CFE roll forming method, RBE roll forming method, JCOE forming method, C forming method and PFP gradual bending forming method are introduced in foreign countrie...
Pre-welding is a welding process of dsaw pipe composed of some, it will shape along the length of the "shallow welding" is a dsaw pipe production in one of the special procedures.
Since early this year, the new capacity continues to release, harder to export, enterprise high cost of production factors, such as steel pipe industry the status of the high cost and low profit conti...

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