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Basic requirements for the appearance of welds of straight seam steel pipes
1. The surface of the welding joint: A. Cracks, lack of fusion, pores, slag inclusion, and splashes are not allowed. B. The weld surface of pipes whose design temperature is lower than -29 degrees, stainless steel and alloy steel pipes with a greater tendency to hardening shal...Read more -
Comparison of steel pipe anticorrosive coating technology
Steel pipe anti-corrosion coating process 1: Due to the use of curtain coating, the coating film sags seriously. Besides, due to the unreasonable design of the roller table and chain, the coating film has two longitudinal and multiple circular scratches. This process is remove...Read more -
Five types of annealing methods in the steel pipe
1. Fully annealed Process: Heat the steel to 20~30℃ above Ac3, cool it slowly (with the furnace) after holding it for some time to obtain a heat treatment process (complete austenitization) close to the equilibrium structure. Complete annealing is mainly used for hypereutectoi...Read more -
What are the detection methods of oil casings
1. Ultrasonic detection When the ultrasonic wave is spread in the detected raw material, the acoustic properties of the raw material and the transformation of the internal tissue will have a positive effect on the spread of the ultrasonic wave. After detecting the level and co...Read more -
What is the rust removal method of welded steel pipe and its importance
The anti-corrosion of buried steel pipes is a key procedure to ensure and prolong its service life. To ensure that the anti-corrosion insulation layer is firmly combined with the pipe wall, rust removal of the pipe is the most important. Generally, the rust on the surface of t...Read more -
How to determine the material of straight seam steel pipe
For the straight seam steel pipe, the material should belong to a steel product with a wide range of use frequency. It has a wide range of applications in engineering construction and equipment production! With the continuous improvement of market technology, the production pr...Read more -
Characteristics of straight seam steel pipe
Straight seam steel pipe generally refers to the use of a special process to carry out anti-corrosion treatment on ordinary steel pipes, so that the anti-corrosion ability of the steel pipe is generally used for waterproof, rust, acid and alkali, and oxidation resistance. The ...Read more -
How to clean straight seam steel pipes
(1) We can use solvents or emulsions to clean the surface of the steel pipe. This method is very effective for the oil and grease or dust and other organic matters on the surface of the steel pipe. (2) In the case of rust on the surface of the steel pipe, we can use a steel wi...Read more -
Straight seam steel pipes procurement method and processing method
Straight seam steel pipe procurement method: 1. Purchasing needs to understand the types of steel pipes 1) Divided by type: straight seam steel pipe, seamless steel pipe, spiral steel pipe, etc. 2) Classification of cross-section shapes of straight seam steel pipes: square pip...Read more