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Seamless steel tube billet
The billet used in the production of steel pipes is called tube billet. Usually high-quality (or alloy) solid round steel is used as the tube billet. According to different production methods, seamless tubes have billets made of steel ingots, continuous casting billets, forging billets, rolled bi...Read more -
Terms on steel pipe dimensions
①Nominal size and actual size A. Nominal size: It is the nominal size specified in the standard, the ideal size expected by users and manufacturers, and the order size indicated in the contract. B. Actual size: It is the actual size obtained in the production process, which is often larger or sma...Read more -
Schedule 40 carbon steel pipe
Schedule 40 Carbon Steel Pipe is one of the medium schedule pipes. There are different schedules in all pipes. The schedule indicates the dimensions and the pressure capacities of the pipes. Hunan Great Steel Pipe Co., Ltd is a leading supplier and manufacturer of the Sch 40 Carbon Pipe products....Read more -
Differences between annealing and normalizing of seamless steel pipes
The main difference between annealing and normalizing: 1. The cooling rate of normalizing is slightly faster than that of annealing, and the degree of supercooling is larger 2. The structure obtained after normalizing is relatively fine, and the strength and hardness are higher than that of annea...Read more -
Carbon steel tube material and use
Carbon steel tubes are made of steel castings or solid round steel through holes to make capillaries, and then made by hot rolling, cold rolling or cold drawing. Carbon steel tubes have an important position in China’s seamless steel tube industry. The key materials are mainly q235, 20#, 35...Read more -
Seamless steel tube straightening process
1. The seamless steel tube enters the roller table at the entrance of the leveler from the upstream roller table. 2. When the head of the seamless steel tube is sensed by the sensor element in the middle of the entrance roller table, the roller table will decelerate. 3. When the head of the seaml...Read more -
Material analysis of 3PE anti-corrosion steel pipe
3PE anti-corrosion steel pipe base material includes seamless steel pipe, spiral steel pipe and straight seam steel pipe. The three-layer polyethylene (3PE) anti-corrosion coating has been widely used in the oil pipeline industry due to its good corrosion resistance, water vapor permeability resi...Read more -
Advantages of hot-dip galvanized seamless steel tube
Hot-dip galvanized seamless tube is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pick...Read more -
Thermal expansion carbon steel pipe
What is heat-expanded steel pipe? Thermal expansion is a processing method of steel pipes, which is to process small-diameter steel pipes into large-diameter steel pipes. The mechanical properties of thermally expanded carbon steel pipe are slightly worse than that of hot rolled carbon steel pipe...Read more -
Structural seamless pipe
Structural seamless pipe (GB/T8162-2008) is a kind of seamless steel pipe used for general structure and mechanical structure. The fluid seamless steel pipe standard applies to seamless steel pipes that transport fluids. In addition to carbon (C) elements and a certain amount of silicon (Si) (gen...Read more -
How to avoid bubbles in welded carbon steel pipes?
It is common for welded carbon steel pipes to have air bubbles in the weld, especially large-diameter carbon seamless steel pipe weld pores not only affect the tightness of the pipeline weld and cause pipeline leakage, but also become the induction point of corrosion, which seriously reduces the ...Read more -
8 Precautions for seamless pipe forming
Forming and sizing of seamless pipes, some hole design and adjustment methods will directly affect the quality, so we should pay attention to the following eight points when handling the forming of seamless pipes: 1. Before there is no perforation, the hole shape of each rack should be adj...Read more
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