-
The difference between precision steel pipe and spiral steel pipe
Precision spiral steel pipe is a high-precision steel pipe that is cold drawn or hot rolled. Because the inner and outer walls of the precision spiral steel pipe have no oxide layer, there is no high pressure, no leakage, high precision, high smoothness, no cold deformation, flaring, flattening, ...Read more -
Defects on the outer surface of hot rolled seamless tubes
Defects on the outer surface of hot rolled seamless tubes External folding: The outer surface of the pipe presents a layered folding spiral. Separation: layered and cracked in a spiral or block shape. External scars: There are scars on the outer surface. Hemp surface: uneven pits appear on the st...Read more -
Application of stainless steel in nuclear industry
Standard nuclear power plants use stainless steel extensively for effective operation, and stainless steel can be found in some form in almost every area of the system (regardless of size). The containment is usually one of the largest components in a nuclear power plant and is usually also made ...Read more -
Pipeline construction before construction
Pipeline construction is a process handled by a very large professional team, and they use their expertise to coordinate operations in a seamless and organized manner. Things to prepare before construction Interact with landowners and stakeholders. This process may take months or even years and r...Read more -
What details should be processed before using thick-walled steel pipes?
1. Thick-walled steel pipe cutting: According to the actual required pipeline length, metal saws and toothless saws should be used for cutting pipes. When using water welding in the cutting process, there must be a method of protecting the raw materials. When cutting, the fireproof and heat-resis...Read more -
Large diameter straight seam steel pipe technological process and main equipment（2）
Large diameter straight seam steel pipe technological process and main equipment In order to change the roundness of the steel pipe, the steel pipe finishing machine: apply strong pressure from the outside to the long round pipe with poor roundness section by section, so that it can meet the rele...Read more -
Large diameter straight seam steel pipe technological process and main equipment（1）
Large diameter straight seam steel pipe technological process and main equipment（1） The two plate edges are processed into the desired form at a time. The steel plate edge milling machine: machine the two sides of the plate material for tube making and make the parallelism of the two plate edge...Read more -
The reason for the misalignment of the head or tail of the steel pipe
The reason for the misalignment of the head or tail of the steel pipe 1) The position of the import and export rollers is incorrect; 2) The center of the ring frame is wrong; 3) The roundness of the seam pressure roller is not good, and the position of individual pressure rollers is deviated; ...Read more -
Acceptance of straight seam steel pipe
1. The inspection and acceptance of straight seam steel pipes shall be carried out by the technical supervision department of the supplier. 2. The supplier guarantees that the delivered straight seam steel pipes meet the requirements of the corresponding product standards. The buyer has the right...Read more -
Quenching technology of straight seam welded pipe
Straight seam welded pipe surface quenching, tempering, heat treatment is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness and effective hardened layer depth. Hardness testing can use Vickers hardness tester, Rockwell or...Read more -
Pipeline leak monitoring system
The pipeline leakage monitoring system is the pipeline leakage information management, which monitors the liquid (crude oil or other liquids) transportation pipelines throughout the day, minute and second. Once the pipeline leaks, the monitoring system can alarm in time through its information ma...Read more -
Classification of pipeline trenchless technology
Trenchless technology can be divided into three categories: laying new pipelines, repairing and replacing old pipelines, and detecting the original pipeline network. 1.Construction techniques for laying new pipelines: shield method, pipe jacking method, pilot / directional drilling pipe laying me...Read more