There are three connection methods for galvanized steel pipes:1. Rolling groove connectionRoll groove weld cracking:① Grind the welding bars on the inner wall of the pressure groove of the pipe mouth to reduce the resistance of the rolling groove;②Adjust the axis of the steel pipe and the rolling gr
The formation mechanism of "whitening" defects in steel pipe anti-corrosion coatings is due to the condensation of moisture mixed into the interior of the coating to emulsify and turn into a translucent white film. There are many reasons for it, such as air humidity in the construction environment,
Plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, are based on steel pipes. A layer of plastic anti-corrosion layer or plastic anti-corrosion layer is fused to the inner surface of the steel pipe (bottom pipe) thr
Large-diameter flange is a kind of flange. It is widely used and promoted in the machinery industry and has been well-received and favored by users. Large-diameter flanges have a wide range of uses, and the range of use is determined according to different characteristics. They are mostly used when
(1) During the extrusion process, the temperature of the lining of the spiral steel pipe continues to increase as the extrusion process proceeds. At the end of the extrusion, the temperature in the area of the inner wall of the lining close to the extrusion die is relatively high, reaching 631°C. Th
The first thing that should be thought of to extend the service life of spiral steel pipes is to do a good job in its anti-corrosion work. Because pipes are mostly stored outdoors, they are most likely to rust when exposed to wind and rain, and thus suffer corrosion. The pipes can be processed and m
Eccentric steel pipes are most likely to occur during the production process of hot-rolled steel pipes, and most of them occur during hot piercing: Based on the anatomical analysis of steel pipes rolled by automatic pipe rolling machines, we believe that the perforated capillary pipes are rolled by
After stainless steel pipe fittings are processed by processes such as forming and welding, the metal molecular structure, magnetic properties, and physical properties change. The atmosphere-protected solid solution process can restore the corrosion resistance affected after processing, and at the s
Cleaning methods for large diameter steel pipes:1. Shot blasting and rust removal: A high-power motor drives the blades to rotate at high speed, so that steel sand, steel shots, wire segments, minerals and other abrasives are sprayed and blasted on the surface of the steel pipe under the action of c
