As the name implies, carbon steel is used as the material of carbon steel, mainly representing 20, Q235, Q345, 16Mn and so on. It is used to connect two kinds of steel pipes with different diameters. According to the different shapes, it can be divided into concentric and eccentric diameter pipe. It is well understood that the center point of the circle at both ends of the tube is called concentric diameter pipe in the same straight line, and vice versa, eccentric diameter pipe.
Major Implementation Standards
Ministry of Chemical Industry Standards (HG/T5010–1958, HG/T 20592–2009)
Ministry of Machinery Standards (JB/T81–1959, JB/T74–1994)
Ministry of Petrochemical Standards (SH3406–1996)
National Standards (GB/T9112–2000)
Calculating Method of Arc Length for Expansion of Small Head and Small Head
For the convenience of calculation, the radius of the big head arc is RD, the angle of expansion is alpha, the radius of the small head arc is RX, (R1-R2) = (R), and L is the length of the side projection of the big head and the small head.
There is (RD-RX) = L=[(H)^ 2+ (R)^ 2]^ (0.5)
RD=(R1*L)(R),
RX=(R2*L)(R),
The angle of expansion is alpha=[180*(R)](L*pi). The unit of expansion is degree.
Main Application Industry of Carbon Steel Variable Diameter Pipe
1. Carbon steel pipe with different diameters can be used to control water, gas, steam, oil products and corrosive media in chemical industry, petroleum, metallurgy, light industry, electric power, water heating, food, medicine, fiber, ink and other industries.
2. Hygienic valves, fluid fittings, special industry pipe fittings and machinery supporting equipment can be used in dairy, pharmaceutical, beer, beverage, edible oil and other industries to meet their professional requirements.
3. Products manufactured according to different standard systems can be suitable for the corresponding standard system of supporting equipment, and non-standard products can be manufactured according to the requirements of users, suitable for special purposes.
