Tag: steel pipe

Online normalization process of steel pipe

Online normalization is a heat treatment process developed in recent years, namely deformation and normalization. It is a steel pipe after rolling the continuous rolling pipe, cooled to a recrystallization temperature on a cold bed, and then reheated the furnace. After heating the steel pipe to a temperature of Ac3 or above in the furnace, it is […]

Seamless steel pipe produces eccentricity (uneven thickness) for a reason

The finished products of seamless precision steel pipe will have the problem of uneven eccentric thickness. But how is it produced? Many people have not figured out. Today we will talk about cold drawn steel pipe, cold-rolled steel pipe, hot-rolled steel pipe, etc. The eccentricity of seamless seam steel pipe is generated. Why is the concentricity of […]

Anticorrosive coating process of steel pipe

Steel pipe in the use and transportation, the inevitable use of the environment and the impact of the transmission medium, prone to chemical or electrochemical reaction and then corrosion, so the use of anti-corrosion coating steel pipe can effectively prevent corrosion of steel. Analysis of Corrosion Protection Technology of Steel Pipe At present, domestic and foreign […]

Production process of reducer

The reducer is a kind of pipe fitting for pipe diameter. It is usually used to press the forming process for reducing diameter pressing, diameter pressing or reducing diameter. A. Diameter/diameter formation The reducer forming process of the reduced-diameter steel tube is to insert the tube billet into the forming mould with the diameter of the reducer, and the […]

Inspection and reliability analysis of steel pipe

The reliability of several non-destructive testing methods, such as magnetic flux leakage, eddy current, ultrasonic and electromagnetic ultrasonic, is discussed. By comparing the reliability of the above methods, it can be seen that the electromagnetic ultrasonic method has the advantages of other non-destructive testing methods. And broad application prospects. 1. Introduction Steel is the most […]

Method for measuring length of steel pipe

According to the requirements of different manufacturers, the length of steel pipe measurement methods, mainly in the following categories: 1, grating length measurement The basic principle is: the steel pipe at both ends of the outer side were set up two fixed-length grating, the use of rodless cylinder driven grating near the ends of the pipe, the […]

The Terminology of steel pipe

① Nominal size and actual size A, nominal size of steel pipe: is the standard size specified in the standard, the user and the manufacturer want to get the desired size, but also the contract specified in the size of the order. B, the actual size: the actual size of the production process, the size is […]

Basic knowledge of steel pipe

The classification of steel pipe 1, according to the production method of classification (1) seamless pipe, hot rolled, cold rolled tube, cold drawn tube, extrusion tube, pipe jacking welded pipe (2) (a) according to the technological points – arc welding pipe, electric resistance welding (high frequency and low frequency) and gas welding tube, furnace welding pipe […]

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