The wall thickness of the spiral welded steel pipe is uniform, it looks good, the force is uniform, and it is durable. The wall thickness of the spiral welded steel pipe is uneven, and the steel pipe is unevenly stressed. A phenomenon that easily occurs during the steel pipe rolling adjustment proce

1. Welded steel pipes for low-pressure fluid transportation (GB/T3092-1993) are also called generally welded pipes, commonly known as clarinet pipes. It is a welded steel pipe used for conveying water, gas, air, oil, heating steam, and other general lower-pressure fluids and other purposes. The wall

1. Reduce tripping time. It is about 5-10 times faster to change the drill bit with the wire rope than the traditional drill pipe trip;2. Save the cost of procurement, transportation, inspection, maintenance, and replacement related to drill pipes and drill collars;3. Because there is always a casin

1. The superior antistatic performance of hot-dip plastic steel pipe: through the addition of antistatic agents in the formula, the internal and external surface resistance can reach and exceed the relevant national industry standards.2. Flame retardant properties of hot-dipped plastic steel pipes:

The process of forging steel flanges generally consists of the following processes, that is, selecting high-quality steel billets for blanking, heating, forming, and cooling after forging. The process methods of forging steel flanges include free forging, die forging, and film forging. During produc

1. In the test results of straight seam steel pipes, if a certain item does not meet the requirements of the product standard, the unqualified ones should be picked out, and double the number of samples should be randomly taken from the same batch of straight seam steel pipes, and the unqualified it

Common methods for 3PE anti-corrosion steel pipe anti-corrosion:1. Pipeline anticorrosion generally adopts two main methods of external coating and cathodic protection.2. Although most of the surface of the pipeline is covered by the coating, a slight leak will cause an incredible corrosion rate, an

Welding equipment: ZX7-400-3 welding machine is used for root welding; Kumagai ZD-500 multifunctional steel pipeline automatic welding equipment is used for filling and covering.Welding material: Bole φ3.2 E6010 cellulose electrode is used for root welding; Lincoln E81T8-G φ2.0 flux-cored self-shiel

Anticorrosion of 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 GB89

Cooling form of large diameter steel pipe:Large-diameter steel pipes are steel pipes with an outer diameter of 1000MM or more. Large-diameter seamless steel pipes are made of steel ingots or solid tube blanks that are perforated into capillaries, and then hot-rolled, cold-rolled, or cold-drawn.1. Ch