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Preventive measures for improper connection when a galvanized steel pipe is connected
Preventive measures for improper connection when a galvanized steel pipe is connected 1. In the selection of pipe materials, high-quality should be selected; the connection method should be finally determined through the design specification requirements and the size of the pipe fittings. The con...Read more -
The main production process of large diameter straight seam welded pipe
1. Plate exploration: After the steel plate used to manufacture large-diameter submerged arc welded straight seam steel pipe enters the production line, the full plate ultrasonic inspection is first performed; 2. Edge milling: double-sided milling of the two edges of the steel plate by a milling ...Read more -
Precautions for welding stainless steel pipe fittings
1. In order to prevent erosion due to heating, the welding should not be too long. It should be 20% less than the carbon steel electrode. The arc should not be too long. The layers should be cool quickly. The narrow weld bead is suitable. 2. The hardening of the stainless steel pipe fittings is q...Read more -
Processing method of stainless steel pipe fittings
Stainless steel pipe fittings are a new type of pipe fittings that are widely used. Generally speaking, the processing methods are as follows : 1. Forging method: the end or part of the pipe is punched out with a swaging machine to reduce the outer diameter. Common swaging machines include rotary...Read more -
Stainless steel does not rust
Stainless steel is an extremely thin, strong, dense, and stable chromium-rich oxide film (protective film) formed on its surface to prevent the relay of oxygen atoms. Continue to penetrate, continue to oxidize, and obtain the ability to resist rust. Once for some reason, this kind of film has bee...Read more -
Connection method of carbon steel seamless pipe
(1) The importance of heavy industrial structures, large-span structures, high-rise or super-high-rise civil building structures or other important structural structures, should consider the selection of high-quality seamless steel pipes, generally according to the working nature of industrial an...Read more -
What causes corrosion of stainless steel welded pipe?
There are two main reasons for corrosion of stainless steel welded pipe 70% are processed. Due to the contamination of iron and copper tools during processing, the argon gas in the welding cannot be well protected and oxidation will occur. In addition, excessive damage to the surface of the anti...Read more -
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