Hot Dipped Hollow Tube Pre Galvanized

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Payment Type:	L/C,T/T,D/P
Incoterm:	FOB,CIF,CFR,EXW
Transportation:	Ocean,Land,Express
Port:	Qingdao,Tianjin,Shanghai

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Product Description

Product Attributes

Model No.: Q345 Q235B Q355B A53 A333 A106 St45

Standard: Astm, Din, Bs, Jis, Gb

Material: Q195-Q345, Api J55-Api P110, St35-St52, 10#-45#

Section Shape: Round

Place Of Origin: China

Application: Fluid Pipe, Boiler Pipe, Drill Pipe, Gas Pipe, Oil Pipe, Chemical Fertilizer Pipe, Structure Pipe

Production Process: Cold Rolled

Certification: Bsi, Ce

Surface Treatment: Galvanized

Special Tube: Thick Wall Pipe

Whether Alloy: Non-Alloy

Tolerance: ±1%

Category: Seamless Steel Pipe

Processing Service: Bending, Welding, Decoiling, Punching, Cutting

Section Shape: Round

Length: 5.8meter

Specification: 20~219mm

Packaging & Delivery

Selling Units	:	Ton
Package Type	:	in Bundles, Water Proof Plastic Packing, in Bulk E
Picture Example	:

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Galvanized Steel Pipe

Galvanized Square Steel Pipe

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Product Description

Galvanized iron pipes (GI pipes) are pipes that have been coated with a layer of zinc to prevent rusting and increase its durability and lifespan. This protective barrier also resists corrosion and wear and tear from constant exposure to harsh environmental elements and indoor humidity.

Durable, versatile and low-maintenance, GI pipes are ideal for a number of heavy-duty industrial applications.
GI pipes are commonly used for:

Plumbing - Water supply and sewage systems use GI pipes as they can withstand harsh weather conditions and are long-lasting, able to last for 70 years depending on application.

Gas and oil transmission - GI pipes are corrosion-resistant or can be applied with anti-corrosion coating, allowing them to last for up to 70 or 80 years despite constant use and extreme environment conditions.

Scaffolding and railing - GI pipes can be used to create scaffolding and protective railings in construction sites. Fencing - A GI pipe can be used to create bollards and boundary marks.

Agriculture, marine and telecommunications - GI pipes are designed to be resilient against constant use and consistent exposure to changing environments.

Automotive and aerospace application - GI pipes are lightweight, rust-resistant and malleable, making them staple materials when constructing aircrafts and land-based vehicles.

Product Parameters

Product Name	Gi Pipe Factory All Size / Specification Customization Round Galvanized Steel Pipe
Wall Thickness	0.3mm-12mm
Length	5.5m, 5.8m, 6m, 11.8m, 12m etc , other length is Available according to demands.
Outer diameter	16X16-100X100mm, 20-500mm
Tolerance	Wall Thickness:±0.05MM Length:±6mm Outer Diameter:±0.3MM
Shape	Round, Square, Rectangle, Oval, etc.
Material	Q195-Q345, 10#-45#,195-Q345, Gr.B-Gr.50, DIN-S235JR, JIS-SS400, JIS-SPHC, BS-040A10
Technique	Cold Rolled, Hot Rolled, ERW
Surface treatment	Pre-galvanized Steel Pipe: 20-275g/m2 Hot dipped galvanized steel pipe: 180-500g/m2
Standard	ASTM, DIN, JIS, BS

Different processes for galvanizing metal:

HOT-DIP GALVANIZING

As the name implies, this method involves dipping the base metal into a molten pool of zinc. First, the base metal must be cleaned either mechanically, chemically, or both to assure a quality bond can be made between the base metal and the zinc coating. Once cleaned, the base metal is then fluxed to rid it of any residual oxides that might remain after the cleaning process. The base metal is then dipped into a liquid bath of heated zinc and a metallurgical bond is formed.

The advantages of this method are that it is economical; it can be performed quickly and to complex shapes. However, the final coating can be inconsistent relative to other galvanizing processes.

PRE-GALVANIZING

This method is very similar to hot-dip galvanizing but is performed at the steel mill, usually on materials that already have a specific shape. Pre-galvanizing involves rolling metal sheet through a similar cleaning process to that of the hot-dip galvanizing process. The metal is then passed through a pool of hot, liquid zinc and then recoiled.

An advantage of this method is that large coils of steel sheet can be rapidly galvanized with a more uniform coating compared to hot-dip galvanizing. A disadvantage is that once fabrication of the pre-galvanized metal begins, exposed, uncoated areas will become present. This means that when a long coil of sheet is cut into smaller sizes, the edges where the metal is cut are left exposed.

ELECTRO-GALVANIZING

Unlike the previous processes, electrogalvanizing does not use a molten bath of zinc. Instead, this process utilizes an electrical current in an electrolyte solution to transfer zinc ions onto the base metal. This involves electrically reducing positively charged zinc ions to zinc metal which are then deposited on the positively charged material. Grain refiners can also be added which helps to ensure a smooth zinc coating on the steel. Similar to the pre-galvanizing process, electrogalvanizing is typically applied continuously to a roll of sheet metal.

Some advantages of this process are a uniform coating and precise coating thickness. However, the coating is typically thinner than the coating of zinc achieved by the hot-dip galvanizing method which can result in reduced corrosion protection.

Benefits of Galvanized Pipe:

Because the pipes are galvanized, it is protected from rust and corrosion. Steel rusts after interacting with water or moisture in the air over time. By adding a coating of zinc to the tubing, galvanized steel round tubing corrodes much slower, extending the life of your tubing.

In addition to this, galvanized pipe also provides:

Lower cost than stainless steel

Lowest long-term cost

Reliable performance

Excellent resistance to mechanical damage

Product Display

We can produce different sizes, thicknesses, widths and materials according to your requirements

Company Profile

Our company is a steel supplier from China, located in Tianjin City, one of the largest steel producers in China. The company integrates the manufacturing, wholesale, material processing and warehousing of stainless steel, aluminum, copper and carbon steel materials, and has established long-term and stable cooperative relations with many well-known steel plants, such as Tisco, Baosteel, Hongwang, Zhangpu, Liangzhong and Jiugang.

Mainly products cover carbon steel tubes, stainless steel tubes, galvanized steel coil, ppgi steel coil, stainless steel coil, carbon steel coil and carbon steel profiles, gi wire, Hollow Anchor Bar, section steel, steel rebar etc. Our company is equipped with plasma cutting machine, coil flattening equipment, laser cutting machine, 8K mirror, frosted wire drawing, filming and titanium plating equipment, which can flatten, split, shear, oil mill wire drawing, and roll oil film wire drawing on stainless steel materials, 8K mirror, titanium and other processing.

In addition, the company's characteristic business: zero-cutting, rounding, square cutting, special-shaped cutting, castings, forgings, product thicknesses up to 150mm, various special materials and specifications can be customized to steel mills.

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.