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Preparation work before connecting plastic-coated steel pipes
The plastic-coated steel pipe is composed of a core layer, a fastening steel strip, an air layer, a heat insulation layer, a reflective layer, a sliding bracket, an outer protective steel pipe, sprayed polyurethane, and entangled fiberglass. It has high strength, is not easily...Read more -
Welding technology and methods of spiral seam submerged arc welded steel pipe
The inner and outer surfaces of large-diameter spiral submerged arc welded steel pipes should be bright and free of residual acid and oxide scale. The surface should be free of defects such as cracks, inclusions, scarring, delamination, concave welds, and incomplete welding. S...Read more -
Precautions for handling and storing stainless steel pipe at the construction site
After thin-walled stainless steel pipes are packaged and bundled, they should be stored in a dry and clean environment without corrosive gases to avoid disorderly stacking with other items. Because the surface of stainless steel is relatively smooth and bright, and it is a met...Read more -
What are the common categories of stainless steel pipes on the market
1. Production method: Stainless steel welded pipes are divided into two categories: seamless pipes and welded pipes according to the production method. Seamless steel pipes can be divided into hot-rolled pipes, cold-rolled pipes, cold-drawn pipes, and extruded pipes. Cold-draw...Read more -
Classification and corrosion protection of oil casing
Petroleum casing can be roughly divided into one and surface casing according to different usage methods. 2. Intermediate casing. 3. Production of casing. 4. Drilling casing. The main purpose of surface casing is to suspend and support subsequent layers of casing through the c...Read more -
Precautions for construction of plastic-coated steel pipes
1. Plastic-coated steel pipes are strictly prohibited from being thrown or violently impacted during transportation, loading and unloading, and construction on construction sites; 2. Plastic-coated steel pipes should not be buried in reinforced concrete structural layers; 3. T...Read more -
What is the role of oil casing in the oil drilling process
1. Surface casing: Install a casing head on the top, and suspend and support subsequent layers of casing through the casing head; isolate the surface shallow water layer and the shallow complex bottom layer, so that the freshwater layer is not polluted by drilling fluid 2. Int...Read more -
What should we pay attention to when anti-corrosion of oil casing
1) When we use oil casing to transport water, we should ensure that the quality of the water is qualified when using it, and the quality of the water must be qualified when using it, and must be implemented when discharging Cleaning and dispensing. During use, it is necessary ...Read more -
What should be paid attention to in the construction of anti-corrosion steel pipeline insulation repair
Anti-corrosion and thermal insulation pipeline construction When the anti-corrosion layer is constructed, the construction shall not be carried out without effective measures in rain, snow, wind and sand weather and environments with high relative humidity. The coating type an...Read more