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suli lee

Premium Author suli lee

Changsha, Hunan, China

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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...
Delivery status should be noted in the contract.The low-power tissue of the steel must be unretractable, subcutaneous bubbles, white spots and microscopic pores.The center is loose, the general loose ...
 The proportion of the weld fusion line of slag produced only slightly reduce, showed that the inclusion of raw materials is not main cause of the slag to produce.
The steel tube is under pressure and the plastic is good for welding and processing.Through various strict and scientific tests and tests, the use of safe, reliable, steel tube diameter, high transpor...
A seamless steel tube is made of a steel ingot or solid tube that is perforated into a capillary and then is made of hot rolled, cold rolled or cold.The specification of seamless steel tube is indicat...
Suction import peripheral cold air from outside into the suction opening free import machine and air volume is very big, make seamless steel pipe smoke inhalation and the amount of cold air is greater...
General seamless steel tube production process can be divided into cold drawing and hot rolled, cold rolled seamless steel tube production process generally more complicated than hot rolled.
The following points are about the material of seamless steel pipe.For example, automobile tube, west gas east station pipe line pipe, bottom pipeline pipe, special cylinder and bracket pipe etc.
The storage of seamless steel tube, the first demand picking the right place, we need think about many external factors, corrosion of steel pipe and so on, so the site must be cleaned clean, dry and v...
In the development of new technology and new sales channels all have various shortcomings of modest, are now calls for energy conservation and emissions reduction.The completely is the process of mark...

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