Seamless pipe is made of steel block or solid pipe blank， and then made by hot rolling cold rolling or cold dial. Seamless pipe plays an important role in Chinas steel pipe industry. Seamless pipe production processes are relatively rich， generally according to the corresponding steps of processing and production.
3 Cleaning: first， clean the grease， dust and other substances attached to the surface of the galvanized pipe after cleaning.
aSt. Louis Nitriding: also known as nitriding， it is the process of penetrating nitrogen atoms into the surface layer of steel. At present，Products Show gas nitriding is widely used in the production of alloy steel pipe.
What is theof defect detection of seamless pipe? Magnetic particle testing or penetrant testing of seamless pipes can effectively find surface defects such as cracks，ArtemisaCold drawn welded pipe manufacturerSeveral commonly used temperatures folds double skin， hair lines， pinholes and so on. Because of its high detection sensitivity， magnetic particle detection method should be preferred for ferromagnetic materials. For non ferromagnetic materials such as stainless steel seamless pipe， penetrant testing method is adopted.
YChaguanas Spiral seam high-frequency welded steel pipe (sy- for pressure fluid transportation is a spiral seam high-frequency welded steel pipe used for pressure fluid transportation， which takes hot-rolled steel strip as pipe blank， often warm spiral forming and high-frequency lap welding method. The steel pipe has strong pressure bearing capacity and good plasticity， which is convenient for welding and processing; After various strict and scientific inspections and tests， the application is safe and reliable，Products Show the diameter of steel pipe is large， the transportation efficiency is high， and the investment in laying pipeline can be saved. It is mainly used for laying pipelines for transporting oil， natural gas， etc.
QdWhen the beam width is small， the reinforcement shall be bent.
The correct and reasonable use of galvanized pipe can play a better role. The product can be widely used in the market because of its obvious performance advantages. Both strength and toughness are worth our choice. Lets see what the specific uses are and what the acceptance standards are?
Galvanized pipe has excellent corrosion resistance
oStages needing attention in the production and manufacture of alloy tubes
QGalvanized pipe is actually galvanized pipe. This is mainly because it increases the corrosion resistance of the steel pipe， so it is evenly coated with a layer of zinc. It can prevent the erosion of other chemicals such as and steam， and protect the steel strip. It is non-destructive and effectively prolongs its service life. Generally， the steel strip purchased is rolled into a large number by the galvanized pipe manufacturer， so pay attention to it during storage.
ZConvenient and efficientThe surface of cold galvanized layer is smooth，Products Show dense and uniform. It has good mechanical properties and corrosion resistance. The consumption of hot-dip galvanized coating is between % - %. The galvanizing process is complex， surface coating and double-sided coating is different，ArtemisaCold drawn welded pipe manufacturerSeveral commonly used temperatures so the thin-walled pipe shall be galvanized. The zinc coating has strong protection and corrosion resistance.
sC Fabrication and installation of pipe support:
There are many types of galvanized pipes， mainly including cold plated seamless pipes and hot-plated seamless pipes. But now the previous one is no longer used. The hot-dip seamless tube is still in use. Hot dip galvanized pipe is mainly used for steel pipes with low pressure fluid such as water and gas. When in use， if in normal working environment， the thickness of galvanized layer of hot-dip galvanized seamless steel pipe is up to μ M above， and it has been used safely for about years. It can be seen that its service life is very long. Of course， when purchasing， we should also find regular manufacturers to order. Only in this way can we achieve this service life. As long as the galvanized pipe is cleaned after pickling， it is basically cleaned in ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank. In order to ensure the quality，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd electro galvanizing will not be used. There are also some small enterprises in the market. They will use electro galvanizing in production. In this way， although it is much cheaper in price. However， the quality is very good when used， and it is also easy to have problems.
The pollution of the joint causes the welding cracking. The composite pipe welding is an accurate work. If it is not done well， it will not only waste resources， but also lead to work efficiency， rework and restart， and waste financial resources.
High valuewRecently， the price of zinc has been falling continuously. The key reason lies in the soft skin of galvanized pipe consumption and the slow start of production and marketing rate of manufacturing industries in the middle and lower reaches after the Spring Festival. The disadvantage of zinc price has long been far beyond the level of cyclical factors. The main performance of no prosperity in the hot season is whether the market situation in the off peak season will become a more worried problem in the galvanized pipe sales market.
MThe crack mainly occurs at -mm from the edge of the alloy pipe. The shape is several parallel vertical cracks of different sizes. The regularity is that the thicker the specification and model of the alloy pipe is The wider the width the more serious the disadvantages.
Galvanized pipe: the hot-dip galvanized pipe base plate and molten electroplating solution are combined physically and chemically to form a dense corrosion-resistant structure of zinc iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe substrate. Therefore， it has strong corrosion resistance.
oSt. Louis 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， compared with plastics， these pipes， like other metals， leveling， crimping and welding， they form round pipes， and then cut into the required length. Generally， there are galvanized pipes in each package. In terms of spot， most of them are in large specifications， ranging from * * .- to * * - Galvanized pipes are divided into structural galvanized pipes， decorative galvanized pipes， architectural galvanized pipes， mechanical galvanized pipes， etc.