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Strip Steel

Strip steel, also known as steel strip, refers to a strip of steel with a certain width and extremely long length, mostly rolled into a roll.

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Strip Steel

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Product Description

Galvanized pipe, also known as galvanized steel pipe, is a steel pipe that has been galvanized. Galvanized steel pipe is usually made of seamless steel pipe or welded steel pipe. During the production process, it is immersed in molten zinc liquid to make the surface of the steel pipe react with zinc to form a solid zinc layer or through cold galvanizing process.

Galvanized pipe is divided into round pipe and square pipe

Common materials

Q195, Q235, Q345 grades, of which Q235 and Q345 are the more common grades.

Round steel pipe Specification size

Type

Outer diameter

Wall thickness

Zinc content

length

MOQ

Packing

Delivery time

Round Pipe

20mm;25mm;32mm;40mm;

48mm;60mm;76mm;89mm;

108mm;114mm;133mm;

159mm;165mm;219mm;

1mm-6.25mm

electro:10-50g/m²

Hot dipped:50-600g/m²

6m-12m or customized

30tons

Bundle or

bulk

7-30 days

Round Pipe Common Size

DN	Size (inches)	Outer diameter (MM)	Wall thickness (MM)	Weight (KG/M)
DN15	1/2	21.3	2.8	1.357
DN20	3/4	26.9	2.8	1.76
DN25	1	33.7	3.2	2.554
DN32	1-1/4	42.4	3.5	3.56
DN40	1-1/2	48.3	3.5	4.10
DN50	2	60.3	3.8	5.607
DN65	2-1/2	76.1	4.0	7.536
DN80	3	88.9	4.0	8.88
DN100	4	114.3	4.0	11.53

Square steel pipe Specification size

Type	Outer diameter	Wall thickness	length	MOQ	Packing	Delivery time
Square pipe	10mm-200mm	0.5mm-9mm	6m-12m or customized size	30tons	Bundle or bulk	7-30days

Advantages

Good corrosion resistance: The galvanized layer can effectively prevent corrosion and rust of steel pipes and extend their service life.

Good decorative properties: The galvanized pipe has a beautiful appearance, bright color, and a certain decorative effect.

Good processing performance: The galvanized pipe is easy to cut, bend, weld and other processing operations, which is convenient for construction.

Process

The manufacturing method of black pipe (furnace welding or electric welding) is selected by the manufacturer. Galvanizing is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Galvanizing adopts hot dip galvanizing method and cold galvanizing method.

① Hot dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the hot dip galvanizing tank.

Hot-dip galvanizing: black parts inspection → hanging → degreasing → rinsing → pickling → cleaning → dipping plating agent → hot air drying → hot dip galvanizing → internal and external blowing → cooling → passivation and rinsing → unloading → inspection, trimming → typing and marking → packaging, storage and transportation.

② Cold galvanizing is electrogalvanizing. It uses electrochemical method to use zinc ingot as anode. Zinc atoms lose electrons and become ions to dissolve in the electrolyte. Steel material is used as cathode. Zinc ions get electrons on steel and are reduced to zinc atoms and deposited on the surface of steel, so as to form a uniform, dense and well-bonded metal or alloy deposition layer.

Electrogalvanizing: galvanized strip → unwinding → stretching → coiling → welding → scraping → passivation and rinsing → zinc supplementation → shaping → typing and marking → cutting → packaging → drying → weighing.

Application

1、Used in construction projects, pipeline projects, bridge construction and other occasions that require long-term resistance to external environmental erosion.

2、Used in the field of water supply and fluid transportation. It can be used in urban water supply pipelines, industrial water pipelines, and transportation of oil, natural gas, chemical liquids and other fields.

3、Used in the columns, beams, frames and other parts of buildings, it can provide stable structural support.

4、Used in the furniture manufacturing industry. Because of its smooth surface and durability, it is an ideal choice for making furniture frames and supporting structures.