What Is Hot-Dip Galvanized Pipe

Hot dip galvanized pipe is the reaction of molten metal with iron matrix to produce alloy layer, so that the matrix and the coating are combined.

 

Hot dip galvanizing is to first pickling the steel pipe, in order to remove the iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank.

 

Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The matrix of hot dip galvanized steel pipe and the molten bath undergo complex physical and chemical reactions to form a tight zinc-iron alloy layer with corrosion resistance.

 

The alloy layer is integrated with the pure zinc layer and the steel pipe matrix, so its corrosion resistance is strong.

Handle Design

What is galvanized coating

Galvanizing refers to the surface treatment technology of plating a layer of zinc on the surface of metals, alloys or other materials to play the role of aesthetics and rust prevention.  The main method used is hot-dip galvanizing.  

Zinc is soluble in acids and alkali, so it is called an amphoteric metal.  Zinc changes little in dry air.  In moist air, a dense basic zinc carbonate film forms on the surface of zinc.  In the atmosphere containing sulfur dioxide, hydrogen sulfide and Marine atmosphere, zinc corrosion resistance is poor, especially in the high temperature and high humidity atmosphere containing organic acid, zinc coating is easily corroded.

 

The standard electrode potential of zinc is -0.76V, for the steel substrate, zinc coating belongs to the anodic coating, which is mainly used to prevent the corrosion of steel, and its protective performance is greatly related to the thickness of the coating.  The protection and decoration of zinc coating can be improved significantly after passivation, dyeing or coating with light protector. 

Our Product Features

What is the difference between welded steel pipe and seamless steel pipe

First, the material is different

1, welded steel pipe: welded steel pipe refers to the steel strip or steel plate bending deformation into round, square and other shapes and then welded into the surface of the joint of the steel pipe, welded steel pipe using the blank is steel plate or strip steel.

2, seamless steel pipe: made of a whole piece of metal, no joints on the surface of the steel pipe, called seamless steel pipe use  Seamless steel pipes are widely used.  The general purpose seamless steel pipe is rolled by ordinary carbon structural steel, low alloy structural steel or alloy structural steel, andhas the largest output, mainly used as a pipeline or structural part for conveying fluids.

The seamless steel pipe has a hollow cross-section and is widely used as a pipeline for conveying fluids, such as pipelines for conveying oil, natural gas, gas, water and some solid materials.  Compared with solid steel such as round steel, steel pipe is light in weightwhile bending and torsional strength is the same, and it is an economic cross-section steel.  

Widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction and other steel pipe manufacturing ring parts, can improve material utilization, simplify the manufacturing process, save materials and processing hours, has been widely used to manufacture steel pipe. 

Our Inventory Specifications

Hot dipped Galvanized round pipe:

21.3 0.4-2.75mm/26.7 0.4-2.75mm/33.4 0.4-3.5mm /42.2 0.4-3.75mm /48.3 0.4-4mm /60.3 0.4-4mm/ 73 0.4-4mm / 88.9 0.9-4.5 / 101.6 0.9-4.5mm

Product Delivery Time

As for the delivery time, it can be controlled by the customer. Because we are a physical factory and cooperate with many large steel mills in China, the time error can be controlled within about 3 days, and we provide free warehousing service

Advantages of Hot Dipped Galvanized

The main advantages are: low treatment cost: the cost of hot dip galvanized rust prevention is lower than that of other paint coatings;  Durable: In the suburban environment, the standard hot-dip galvanized rust prevention thickness can be maintained for more than 50 years without repair;  In urban or offshore areas, the standard hot-dip galvanized anti-rust layer can be maintained for 20 years without repair;  Good reliability: the galvanized layer and the steel is a metallurgical combination, becoming a part of the steel surface, so the durability of the coating is more reliable;  The toughness of the coating is strong: the galvanized layer forms a special metallurgical structure, which can withstand mechanical damage during transportation and use;  Comprehensive protection: Every part of the plating can be plated with zinc, even in the depression, sharp corners and hidden places can be fully protected;  Save time and effort: The galvanizing process is faster than other coating methods and avoids the time required to apply on the site after installation. 

The Application Range of Hot-Dip Galvanized Seamless Pipe

1. Construction engineering: hot-dip galvanized seamless steel pipe plays an important role in construction engineering.  It can be used as a support structure for a building, and its strength and stability make the building stronger and safer.  At the same time, hot-dip galvanized seamless steel pipes are also widely used in the production of building materials such as roof frames, stairs, ceilings and floors.  

2. Petrochemical: In the process of oil and gas transmission, storage and processing, hot-dip galvanized seamless steel pipe is an indispensable pipeline material.  It has good corrosion resistance, can resist corrosive substances in oil and gas, but also can withstand the role of high pressure and high temperature. Hot-dip galvanized seamless steel pipe is widely used in oil drilling, oil refining, natural gas transportation and other processes to ensure the safety and stability of the entire process.  

3. Power Industry:  Hot-dip galvanized seamless steel pipe plays an important role in power transmission system.  It can be used in the construction of support poles, wire towers and insulators of transmission lines. These power facilities need to have good carrying capacity and weather resistance, and hot-dip galvanized seamless steel pipes just meet these requirements.  

4. Civil buildings:  Hot-dip galvanized seamless steel pipes are also widely used in civil construction.  

For example, it can be used as a material for water supply pipes and drainage pipes, and used in road and bridge construction for road light poles, guardrail and bridge supports.  The use of hot-dip galvanized seamless steel pipes makes these buildings more stable and durable.  In addition to the above areas, hot-dip galvanized seamless steel pipes can also be used in shipbuilding, automobile production, industrial equipment manufacturing, as well as agriculture and animal husbandry.  Its wide application makes all walks of life can benefit from it.