The national standard carbon steel elbow introduce

The national standard carbon steel elbow introduces the push geometry of the elbow

National standard carbon steel elbow first according to its radius of curvature to divide, can be divided into long radius carbon steel elbow and short semi-carbon steel diameter elbow.Long radius carbon steel elbow refers to its radius of curvature equal to 1.5 times the outside diameter of the pipe, i.e. R=1.5D.A short radius carbon steel elbow is one whose radius of curvature is equal to the outside diameter of the pipe, i.e. R=1.0D.(D is the elbow diameter, and R is the radius of curvature) If divided by pressure grade, there are about 17 kinds, which are the same as the American pipe standard, including: SCH5S, SCH10S, SCH10, SCH20, SCH30, SCH40S, STD, SCH40, SCH60, SCH80s, XS;SCH80, SCH100, SCH120, SCH140, SCH160, XXS, among which STD and XS are commonly used.According to the Angle of carbon steel elbow, there are 45° elbow, 90° elbow and 180° elbow.The implementation standards are GB/T12459-2005, GB/T13401-2005, HG/T21635-1987, D-GD0219, etc

The main parameters of the push geometry of the national standard carbon steel elbow are the radius of curvature R, the irroundness of the section perpendicular to the circle of the radius of curvature (the actual diameter of the section dS - the diameter of the standard section dB) and the wall thickness δ.The process parameters that affect the geometric shape of the elbow are: the material of the billet, the wall thickness and the outer diameter of the billet, the material and shape of the mandibular head, the heating temperature and its distribution, and the pushing speed.The influence of each process parameter on the geometric shape of the elbow is discussed below.Push the national standard carbon steel elbow and wall thickness and caliber models are provided by customers, our company according to customer requirements push various types of national standard carbon steel elbow.Therefore, in the case of the same outer diameter, wall thickness and shape and size of the mandril head of the blank, the fitting performance with the die is less than A335P22.Push national standard carbon steel elbow need normalizing + tempering heat treatment, machining port, wall thickness need to leave burning loss and machining allowance.The general allowance is 10% ~ 20% of the theoretical wall thickness of the elbow.The smaller the ratio of the wall thickness of the elbow to the diameter of the section, the better the fitting performance with the die, but the more likely the inner arc of the elbow is to be unstable and wrinkle.

All in the company to order national standard carbon steel elbow customers our company to provide reasonable to customers, with sincere service to obtain customer satisfaction.

Hebei Aoguang Pipe Fittings Manufacturing Co., Ltd. mainly produces a variety of different types of carbon steel pipe fittings are mainly divided into: elbow, tee, size head, pipe cap and so on.The specifications and models of the above pipe fittings are complete, high quality and low price