What are the quality protection measures for galvanized pipe during welding
7There are five main guarantee measures for steel pipe welding. If these five aspects are guaranteed， the quality of galvanized pipe can also be guaranteed.
lSan RafaelFunction of I-beam: where is I-beam mainly used?
During the heating and cooling process of structural welded pipe workpiece， due to the inconsistent cooling speed and time of surface layer and core layer， the temperature difference will be formed， resulting in uneven volume expansion and contraction， resulting in stress，Products Show namely thermal stress. Under the action of thermal stress，requirementAlloy pipeStandards in material selection making the core layer stretch. At the end of cooling， the surface layer is compressed and the core is stretched because the cooling volume contraction of the core cannot be carried out freely. That is， under the action of thermal stress the surface of the workpiece is compressed and the core is pulled.
QShijakGalvanized; hot-rolling;
EyGalvanized; hot-rolling;
The smooth of steel pipe is mainly through tension reducing， which is a continuous rolling process of hollow base metal without center and tip. Under the condition of ensuring the capillary welding quality， the whole welded pipe is heated to more than ℃ by the welded pipe tension reduction process， and then rolled to finished pipes with various outer diameters and wall thicknesses by the tension reduction machine ( times in total). The fluid pipes produced by developed countries in the world have adopted the welded pipe smooth process in a large number of boiler pipes. With the development of society， Domestic hot welded pipe has gradually formed a situation to replace smooth pipe.
In hardware， you can choose an incomplete performance outside the product. Some construction experts claim that if there is a mechanical effect on these products， they are not suitable. At least this product is impossible.
cCarburizing: carburizing is the process of penetrating carbon atoms into the surface layer of steel. It also makes the low-carbon steel workpiece have the surface layer of high-carbon steel，Products Show and then after quenching and low-temperature tempering， the part of the workpiece can maintain the toughness and plasticity of low-carbon steel.
I Pure zinc layer is a plastic zinc layer in hot-dip galvanizing. Its properties are basically close to pure zinc and have ductility， so it is flexible. Galvanized pipe is widely used in architecture. This product must have been seen by everyone. However， there are many types of it. When you buy it， you should also find out which one you need. The reason why it is favored by everyone in the market is inseparable from its advantages. Next， Xiaobian will lead you to see the advantages of galvanized pipe.
THigh quality brandIn view of the current market environment， especially in terms of construction or equipment manufacturing technology， the position of galvanized pipe is still relatively large. It is precisely because of this strong position that we can see this kind of building material in all walks of life， even in a field that seems to have little contact. It will be applied in many construction projects. At the same time， even in the depressed environment of the steel industry，Products Show the application situation and utilization rate of this kind of pipe are very high.
wJ Spiral welded steel pipe (sy- for pile is made of hot-rolled steel strip coil as pipe blank， often warm spiral forming，requirementAlloy pipeStandards in material selection double-sided submerged arc welding or high-frequency welding. It is used for foundation pile of civil building structure， wharf， bridge， etc.
Spray is OK. This method can not only completely remove rust， but also the welded pipe will be affected by abrasive impact and friction， resulting in the average roughness of the welded pipe.
The storage of galvanized pipes should pay attention to several points. The first is the storage location. It cannot be placed in the open air， because in the open air， not only the safety of various products such as theft，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd but also corrosion problems will occur. Open air sites are vulnerable to various extreme weather conditions. Large amounts of rain or snow will erode the zinc coating on the surface to the greatest extent， which may lead to rust of the product. The second is the details of storage. It is not directly exposed to the sun. It shall be cooled and dried and shall not be stored with corrosive articles.
Quality documentskThanks to a zinc tube， stand in the formation and development of painful microorganisms.
KAs shown in the name， I-beam is an I-shaped section steel. The inner surface of the upper and lower flanges has an inclination， generally :， which makes the outer flange thin and the inner flange thick. Therefore， the section characteristics of I-beam in the two main planes are very different， the structure of the I-beam has determined its torsional performance.
Spiral seam submerged arc welded steel pipe for general low-pressure fluid transportation (SY / t- is a submerged arc welded steel pipe for general low-pressure fluid transportation such as water， gas， air and steam， which is made of hot-rolled steel strip coil as pipe blank， often warm spiral forming and double-sided active submerged arc welding or single-sided welding.
dSan Rafael Pickling stainless steel pipe. When removing grease， rust prevention， spot welding， oxide layer， free iron and other dirt the surface shall be treated with silver to evenly slow down the pickling surface， prevent metal corrosion and hydrogen embrittlement and inhibit fog production.
wI The zinc coating is thick， the crystallization is detailed uniform and non porous， and the corrosion resistance is excellent;
Installing the pipe structure means the complexity of some elements.