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Galvanized Steel Pipe

Galvanized steel pipe usually means the hot-dip galvanized steel pipe. To make the hot-dip galvanizing pipe, firstly do the pickling in order to remove the iron oxide on the surface of the steel pipe, then clean the pipes in the ammonium chloride or zinc chloride aqueous solution, and then put the pipes into Hot-dip galvanized bath, the galvanized layer can improve the corrosion resistance of steel pipe so as to extend the service life. Galvanized steel pipe is not only widely used in the field of water, gas, oil and other general low-pressure fluid pipeline, but also in chemical coking equipment such as oil heater, condensation Cooler, and the bridge piles such as mine tunnel support tube and so on.

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Galvanized steel pipe usually means the hot-dip galvanized steel pipe. To make the hot-dip galvanizing pipe, firstly do the pickling in order to remove the iron oxide on the surface of the steel pipe, then clean the pipes in the ammonium chloride or zinc chloride aqueous solution, and then put the pipes into Hot-dip galvanized bath, the galvanized layer can improve the corrosion resistance of steel pipe so as to extend the service life. Galvanized steel pipe is not only widely used in the field of water, gas, oil and other general low-pressure fluid pipeline, but also in chemical coking equipment such as oil heater, condensation Cooler, and the bridge piles such as mine tunnel support tube and so on.


Galvanized Steel Pipe


1Standard:API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS, JIS, IS
2Out Diameter:219.1 mm - 2540mm (8"-100")
3Wall Thickness:3.2mm -25.4mm
4Length:6 - 12m
5Steel Grade:API 5L: GR A, GR B, X42, X46, X56, X60, X65, X70
6ASTM A53:ASTM A252 GR 1, GR 2, GR 3
7EN:S275, S275JR, S355JRH, S355J2H
8BS 4360:Grade 43, Grade 50
9Surface:Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement. 
10Test:Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
11Usage:Used for low pressure liquid delivery, such as water, gas, and oil.


Galvanized Steel Pipe


Galvanized steel pipe is a kind of steel pipe that has been processed by galvanization. The following is an introduction to it:


Manufacturing Process


Galvanized steel pipes are typically produced through either hot-dip galvanizing or electrogalvanizing processes.


Hot-Dip Galvanizing: The steel pipe is immersed in a bath of molten zinc at a high temperature. A chemical reaction occurs, forming a thick, durable zinc coating on the surface of the pipe. This coating provides excellent corrosion resistance and can last for a long time.


Electrogalvanizing: This process uses an electric current to deposit a layer of zinc onto the surface of the steel pipe. The zinc layer is relatively thinner than that of hot-dip galvanizing but still offers good corrosion protection. It is often used for applications where a more precise and smoother coating is required.


Properties


Corrosion Resistance: The zinc coating acts as a barrier between the steel and the surrounding environment, preventing moisture, oxygen, and other corrosive substances from coming into contact with the steel, thus significantly extending the service life of the pipe.


Strength and Durability: Steel pipes themselves have high strength and rigidity, and after galvanization, their durability is further enhanced. They can withstand high pressures and various mechanical stresses, making them suitable for a wide range of applications.


Applications


Water Supply and Drainage Systems: Commonly used in water supply pipelines to transport clean water to households, factories, and public facilities. They are also used in drainage systems to carry away wastewater and rainwater.


Gas Pipelines: In some cases, galvanized steel pipes are used for gas transmission, providing a safe and reliable way to transport natural gas or other gases.


Construction Industry: Used in building structures for purposes such as scaffolding, structural supports, and as conduits for electrical wiring.

Product Dimensions

Outside DiameterDN15-400mm 
Wall Thickness2-5mm
National StandardGB / T3091-2015 low pressure fluid conveying welded steel pipe

GB / T13793-2008 Straight seam welded steel pipe

GB / T21835-2008 Size and weight of welded steel pipe

BS 1387-1985 screw steel tubes with BS21 Pipe thread
MaterialBS:1387, EN10217:S185, S235,S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52 

ASTM A 53: Gr. A, Gr B, Gr C, Gr.D

API 5L: A, B, X42, X46, X52, X56, X60, X65 X70

GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555

GB/T3091, SY/T5037, SY/T 5040,CJ/T 3022:Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8
LengthRandom length or cut length 6m
EndPlain end or threaded end
SurfaceHot dip galvanized, Electro galvanized
TestChemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield, strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.