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PRODUCT DESCRIPTION

Product Description

Galvanized angle steel is divided into hot-dip galvanized angle steel and cold-galvanized angle steel. Hot-dip galvanized angle steel is also called hot-dip galvanized angle steel or hot-dip galvanized angle steel. The cold galvanized coating mainly ensures the full contact between the zinc powder and the steel through the electrochemical principle, and generates the electrode potential difference for anti-corrosion.

Process flow

Hot dip galvanized angle steel

Hot-dip galvanized angle steel is also called hot-dip galvanized angle steel or hot-dip galvanized angle steel. The rust-removed angle steel is immersed in a molten zinc solution at about 500 ℃, so that the surface of the angle steel is attached with a zinc layer, so as to achieve the purpose of anti-corrosion. It is suitable for strong corrosive environments such as strong acid and alkali mist.

Process: hot-dip galvanized angle steel process: angle steel pickling → water washing → immersion in flux plating solvent → drying and preheating → rack plating → cooling → passivation → cleaning → grinding → hot-dip galvanizing completed.

The thickness of the galvanized layer of the hot-dip galvanized angle steel is uniform, up to 30-50um, and the reliability is good. . The raw material of hot-dip galvanized angle steel is angle steel, so it is classified the same as angle steel.

Cold galvanized angle steel

The cold galvanizing process is used to protect metals from corrosion. For this purpose, a coating of zinc filler is used, which is applied to the protected surface by any coating method and dried to form a zinc filler coating. In the dry coating Has a content of zinc (up to 95%). Suitable for repair work (i.e. during repair work, only where the protected steel surface is damaged, it can be re-coated as soon as the surface is repaired). The cold galvanizing process is used for the anticorrosion of various steel products and structures.

Cold galvanized coatings are mainly used for corrosion protection through electrochemical principles. Therefore, it is necessary to ensure that the zinc powder is in full contact with the steel, resulting in an electrode potential difference, so the surface treatment of the steel is very important. Before spraying cold galvanizing, mechanical rust removal (sand blasting, shot blasting, etc.) should be selected to make the surface cleanliness of the steel reach ISO 85O1-1 Sa 2.5, which is equivalent to GB 8923 Sa 2.5. Its text is defined as: "After the steel is mechanically derusted, the surface is free of oil, rust, scale and other dirt, or only slight traces are left; 95% of the steel surface is impacted by steel shot (sand) and exposed. Metallic sheen."

For another indicator of surface treatment quality - roughness, different cold galvanized materials have different requirements for roughness. In the construction instructions of Zinga, the average roughness Ra=12.5 is required, that is, the roughness Rz=55-75 microns. In the "Strong Zinc" and "Robalu" construction instructions, the requirements for roughness are slightly lower, Rz=40~60 microns.

If the cold galvanized film is formed alone, as an anti-corrosion coating, the surface roughness can be controlled to be slightly smaller to ensure the coating thickness of the cold galvanized coating; and when the cold galvanized coating is used as the bottom layer of the heavy-duty anti-corrosion coating, the total matching coating When the thickness is greater than 180 microns, in order to ensure the adhesion of the entire coating, the surface roughness Rz of the steel should be greater than 60 microns.

Product name:

  Hot dipped galvanized equal steel angle bar

Place of Origin:

Shandong, China

Standard:

ASTM, AiSi, DIN, EN, GB, JIS

Application:

Industry/Chemical Equipment/Kitchen

Alloy Or Not:

Non-Alloy

thickness:

0.5mm-10mm

Technical Test:

UT Test, Bending Test, Charpy Test

Tolerance:

±1%


Processing Service:


Welding, Decoiling

Grade:

SS400-SS540 Series

Delivery Time:

8-14Days

Technique:

Hot Rolled Angle Bar

Price Term:

CIF CFR FOB EX-WORK

Type:

Equal and Unequal

Finish:

Brush Polish

Size:

Customized Size

Specification weight

Product name

Specification

Reasonable weight kg/m

Specification

Reasonable weight kg/m

angle steel

25*3

1.124

80*8

9.658

angle steel

25*4

1.459

80*10

11.874

angle steel

30*3

1.373

90*8

10.946

angle steel

30*4

1.786

90*10

13.476

angle steel

40*3

1.852

90*12

15.94

angle steel

40*4

2.422

100*8

12.276

angle steel

40*5

2.967

100*10

15.12

angle steel

50*3

2.332

100*12

17.898

angle steel

50*4

3.059

100*14

20.611

angle steel

50*5

3.77

100*16

23.257

110*7

11.928

angle steel

50*6

4.465

110*8

13.532

angle steel

60*5

4.57

110*10

16.69

angle steel

60*6

5.42

110*12

19.782

angle steel

63*4

3.907

110*14

22.809

angle steel

63*5

4.822

125*8

15.504

angle steel

63*6

5.721

125*10

19.133

angle steel

63*8

7.469

125*12

22.696

angle steel

70*5

5.397

125*14

26.193

angle steel

70*6

6.406

140*10

21.488

angle steel

70*7

7.398

140*12

25.522

angle steel

70*8

8.373

140*14

29.49

angle steel

75*5

5.818

160*12

29.391

angle steel

75*6

6.905

160*14

33.987

angle steel

75*7

7.976

160*16

38.518

angle steel

75*8

9.03

160*18

48.63

angle steel

75*10

11.089

180*18

48.634

angle steel

80*6

7.736

200*24

71.168

Theoretical calculation formula Edge thickness*0.00785=kg/m


型材证书和客户应用行业

advantage

1. Low processing cost: the cost of hot-dip galvanizing anti-rust is lower than that of other paint coatings;

2. Durability: hot-dip galvanized angle steel has the characteristics of surface gloss, uniform zinc layer, no leakage plating, no dripping, strong adhesion and strong corrosion resistance. In suburban environment, the standard hot-dip galvanized anti-rust thickness can be maintained 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;

3. Good reliability: The galvanized layer and the steel are metallurgically bonded and become part of the steel surface, so the durability of the coating is more reliable;

4. The toughness of the coating is strong: the galvanized layer forms a special metallurgical structure, which can withstand mechanical damage during transportation and use;

5. Comprehensive protection: every part of the plated parts can be galvanized, and can be fully protected even in depressions, sharp corners and hidden places;

6. Time-saving and labor-saving: The galvanizing process is faster than other coating construction methods, and it can avoid the time required for painting on the construction site after installation.

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