First, the metallurgical properties of manufacturing materialsThe raw material for spiral welded steel pipe is hot-rolled coil, and straight seam welded steel pipe is made of steel plate socket. The weight of the alloy contained in the coil is less than that of the steel plate. It is for this reason

There are three ways to clean the material in the steel pipe.Methods for cleaning the inside of the steel pipe 1. Chemical cleaning: Chemical cleaning pipelines use chemical agents to temporarily modify the pipelines. Temporary pipelines and circulating pump stations can be used to perform circulati

There are three ways to connect galvanized steel pipes:1. Grooving connection1) Grooving weld cracking:① Grind the inner wall weld ribs of the grooved part of the pipe mouth to reduce the grooving resistance;② Adjust the axis of the steel pipe and the grooving equipment, and require the steel pipe a

Important components of alloy steel and thick parts must be preheated before welding.The purpose of preheating before welding is as follows:(1) Preheating can slow down the cooling rate after welding, allowing hydrogen to diffuse and escape in the weld metal, avoiding cracking caused by hydrogen. It

During the production process, stainless steel welded pipes can be subjected to intermediate heat treatment and finished product heat treatment. Because a bright surface without oxidation can be obtained, the traditional pickling process is eliminated. The use of this heat treatment process not only

(I) Site preparation: According to the on-site survey, the first thing to do after entering the site is to prepare the construction site, mainly including the cleaning and leveling of the original cultivated field surface, to make full preparations for the hoisting and stacking of steel pipe piles a

The connection method specification of galvanized steel pipes depends on the type of connection method. Generally, there are several types, flange connection, clamp groove connection, and welding. In the actual connection of galvanized steel pipes, welding is a more commonly used connection method.

First, the continuous rolling process of straight seam steel pipes: the continuous rolling process of straight seam steel pipes, the continuous rolling process is used for the continuous rolling and fixed diameter reduction process of steel pipes. Continuous rolling of steel pipes is a process in wh

Large-diameter steel pipes have won unanimous praise from consumers in use. They are widely used in mechanical parts, fluid transportation, construction sites, etc. Large-diameter steel pipes have undergone strict inspections during manufacturing, which has also improved their durability. Large-diam

1. Sandblasting method: Sandblasting uses a high-power motor to drive the sandblasting blades to rotate at high speed, so that steel sand, steel shot, wire segments, minerals, and other abrasives are sandblasted on the surface of the steel pipe under the effect of centrifugal force. It can not only