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ASTM A53 A500 Hot Dipped Galvanized Steel Pipe
Galvanized pipe refers to steel pipe treated by galvanizing process, usually using hot-dip galvanizing or electro-galvanizing. Through these processes, the zinc layer can effectively isolate the steel pipe from the external environment, prevent oxidation a···
Galvanized steel pipe is a welded steel pipe with a hot-dip or electro-galvanized layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and prolong their service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, and oil heaters and condensation pipes for chemical coking equipment. Pipes for coolers, coal distillation washing oil exchangers, trestle piles, and support pipes for mine tunnels, etc.
Product Specification
Product name | Hot Sale Prime Quality Galvanized Pipe |
Material | Q235, Q345, S235JR, S275JR, SS400, A36, St37-2, St52-4, STK400, STK500, S355JR, GR.B-D..... |
Surface Finish | Pre-galvanized, Hot dipped galvanized, Electro galvanized, Black, Painted, Threaded, Engraved, Socket. |
Shape | Round /Square /Rectangular |
Outer Dia (mm) | 21.3-165mm/ 10*10-600*600mm/ 10*20-800*400mm |
Wall Thickness (mm) | 0.5-2.5 to 1.5-5.5/ 0.4-27mm/ 0.4-27mm |
Length (mm) | 5800 or 6000/ 6M or customized |
Surface Treatment | 1)Black, Pre-galvanized |
2)Oiled, powder coating | |
3)Galvanized as your requirement | |
PS:Pre galvanized steel pipe: 60-150g/m² | |
Hot dipped galvanized steel pipe: 200-400g/m² | |
End Finish | Plain/ beveled ends or threaded with sockets/ coupling and plastic caps. |
Packaging | Packing in bundle with steel strips; with seaworthy package at the end; could be done with your requirement. |
Inspection | With Chemical Composition and Mechanical Properties Testing; Hydrostatic Test, Dimensional and Visual Inspection, With Nondestructive Inspection |
Application | construction pipe, machine structure pipe, agriculture equipment pipe, water and gas pipe, Greenhouse pipe, Building material, Furniture tube, Low pressure fluid tube, etc |
Others | 1:Special design available according to requirement |
2:Pipe can be necked dowm, punching hole on pipe wall. | |
3:Pipe fittings, elbows are available. | |
4.All production process are under the ISO 9001:2000 strictly |
Galvanized Steel Pipe products are divided into two main categories based on the galvanizing process: 1) pre-galvanized steel pipe; 2) hot-dip galvanized steel pipe.
Pre-galvanized steel pipe (also known as GI pipe) is made from continuous hot-dip galvanized steel strip wound and welded, and the galvanizing process takes place before the pipe is formed.
Hot-dip galvanized steel pipe are made from welded steel tubes with a black surface which are degreased, pickled, dipped, dried, and then impregnated with dissolved zinc for a period of time, with the galvanizing step taking place after the tubes are formed.
The main difference between pre-galvanized steel pipe and hot-dip galvanized steel pipe:
1. Different appearance:
The surface of pre-galvanized steel pipe is smooth, bright, even, flat and greenish white.
The surface of hot-dip galvanized steel pipe is rough, which is caused by the hot-dip galvanizing process, and the color is darker and silver-white.
2. Corrosion resistance:
The corrosion resistance of pre-galvanized steel pipe is poorer than that of hot-dip galvanized pipe, firstly, because the galvanized strip removes the excess zinc liquid during the production process, resulting in a thinner layer of zinc; secondly, because galvanizing is carried out prior to the formation of the steel pipe, there will be no zinc coverage on the weld seams and cuts of the pre-galvanized steel pipe, resulting in poorer corrosion resistance.
Hot-dip galvanized steel pipe has strong corrosion resistance, and its service life can be up to 20-50 years depending on the use environment and the amount of galvanization.
3. Cost:
Pre-galvanized pipe costs less than hot-dip galvanized pipe.
Companies adhering to the "efficient, win-win" business philosophy, continue to provide customers with professional, quality products and value-added services, continuous progress and learning to meet customer needs. Now the company has entered the period of rapid development of global trade, looking forward to more cooperation.
Packaging And Transportation
We offer different modes of transport depending on the customer's destination: rail transport and ship transport, etc. The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards, Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
For more information or to place an order, please contact us Email: glorrmetal@gmail.com or Whatsapp: +86 18963591776
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