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Internal anti-corrosion treatment method of large-diameter spiral steel pipes
The construction of cement mortar fabric should usually be carried out after the spiral steel pipe is laid, the pressure test is qualified, and the soil is compacted according to the design requirements. Due to the small rigidity of the steel pipe and the thin wall, the pipeli...Read more -
The difference between 316L stainless steel pipe and 316 stainless steel pipe
316L stainless steel pipe is a pipe widely used in construction projects. The shape of the tube is an oblong hollow steel tube. Mechanical equipment, petrochemical equipment, medical equipment, food, and light industry pipelines or mechanical parts will all use 316L stainless ...Read more -
Four advantages of anti-corrosion steel pipe in practical application
Anti-corrosion steel pipe is a metal body buried in the ground. However, due to the use of the environment, despite careful construction, the general steel pipe will inevitably age easily, and the steel pipe will still be damaged. To prolong the life of the steel pipe, it is n...Read more -
The difference between cast steel flange and forged steel flange
The cast steel flange has an accurate blank shape and size, a small processing amount, and low cost, but has casting defects (pores, cracks, inclusions); the internal structure of the casting is poorly streamlined (if it is a cutting part, the streamlined form is even worse); ...Read more -
Analysis of the role of the steel flange
Steel flange is also called flange or flange. It is the part that connects the pipe to the pipe. connected to the pipe end. There are holes in the flange, and bolts can be worn to make the two flanges tightly connected. The flanges are sealed with gaskets. Flanged fittings ref...Read more -
Connection problems between steel pipe fittings
Steel pipe fittings are parts that connect tubes to pipelines. According to the connection method, it can be divided into four categories: socket fittings, threaded fittings, flanged fittings, and welded fittings. Mostly made of the same material as the pipe. There are elbows ...Read more -
Use scope and characteristics of hot dip plastic steel pipe
Hot-dipped plastic composite steel pipes are suitable for coal mine gas extraction, ventilation systems, fire water supply systems, central air-conditioning HVAC circulating water pipes, industrial water supply and drainage, domestic water supply and drainage, gas and other ga...Read more -
Introduction of anti-corrosion on the inner wall of large-diameter steel pipes
1. Before processing all steel pipes, the steel plate on the inner wall side of the large-diameter steel pipe shall be de-rusted until the metal is exposed to metallic luster (whitening). It should meet the sa2.5 standard required in GB8923-88 of “Steel Surface Corrosion...Read more -
The purpose of preheating the pipe before welding the spiral steel pipes
Critical components of alloy steel and thick parts must be preheated before welding. The purpose of preheating before welding spiral steel pipes is as follows: (1) Preheating can slow down the cooling rate after welding, make hydrogen diffuse in the weld metal and escape, and ...Read more