Galvanized Steel Angle

Galvanized Steel Angle is a steel material that has been galvanized and covered with a layer of zinc. This galvanizing process is usually achieved by dipping the angle steel into molten zinc or using electroplating technology. It not only enhances the corrosion resistance of the steel but also gives it an aesthetic appearance. It not only has a long service life but is also easy to process. It is a low-cost structural steel, so it is deeply loved by various industries. At Wanzhi Steel, the length, coating thickness, and side length can be customized. Welcome to contact us for more details~

Galvanized Angle Steel Specification

Item	Galvanized Angle Steel
Place of Origin	Shandong, China
Delivery Time	15-21 days
Material	Q195, Q235, Q345, Q420, Q235B,Q345B,Q420B/C,Q460C,SS400, S275J0/S275J2,S355JR/S355J0/S355J2
Technique	Hot Rolled, Cold Rolled
Length	6-12m can be specified
Size	20×20×2.5 – 200×200×24, can be specified
Surface Treatment	Zinc Coated, Passivation, Oiled, Anti-fingerprint
Standard	AISI, ASTM, DIN, JIS, GB, EN
Payment term	TT 30% Advance + 70% Balance
Sample	Free Available
Price Item	FOB, CIF, EXW, etc
Packing	Standard export packaging
Certification	ISO 9001, SGS, ABS, BV
Uses	House construction, doors and windows, bridges, metal frames, road construction

What is galvanized angle steel?

Galvanized angle steel is an angle steel with a layer of zinc on the surface of ordinary angle steel. It is a popular building material, mainly used to provide structural support and prevent steel corrosion, thereby increasing the service life of steel. It can be divided into electro-galvanized and hot-dip galvanized angle steel. The electro-galvanized zinc layer is thinner, while the hot-dip galvanized zinc layer is thicker.

What is a steel angle?

Steel angle, also named angle iron, or steel angle bar, is manufactured by hot-rolled carbon steel or strength low alloy steel. It has an L-cross-shaped section with two legs – equal or unequal and the angle would be 90 degrees. The specifications are expressed in millimeters of edge width × edge width × edge thickness.

Advantages of gi angle steel

1. Anti-corrosion performance and durability: It can resist harsh environments such as moisture and acid rain, and is not afraid of outdoor high temperature, humidity, and corrosive environments.

2. Strength and stability: It has very high strength and is not easy to deform. It is a very stable building material.

3. Plasticity and processability: It can be bent and cut as needed, and can be cut and welded into various shapes and sizes.

4. Fireproof and lightning protection characteristics: It has fireproof and lightning protection characteristics, so it is very popular in the fields of construction and engineering.

5. Lower cost: Compared with other corrosion-resistant materials such as stainless steel, the cost of galvanized angle steel is relatively low and more economical.

6. Wide range of applications: Such as construction, automobile manufacturing, home appliances, and furniture manufacturing, and has strong adaptability.

Sizes of GI angle steel

Its specifications are side width * side width * side thickness, 2-20, with the number being the centimeters of the side length. The same number of angle steel often has 2-7 different side thicknesses.

Size chart

SpecificationL: Leg length*leg length*thickness(mm)	Weight (kg/m)	Specification: Leg length*leg length*thickness (mm)	Weight (kg/m)
25*25*3	1.124	90*90*8	10.946
25*25*4	1.459	90*90*10	13.476
30*30*3	1.373	100*100*6	9.366
30*30*4	1.786	100*100*7	10.83
40*40*3	1.852	100*100*8	12.276
40*40*4	2.422	100*100*10	15.12
40*40*5	2.976	100*100*12	17.898
45*45*3	2.088	110*110*7	11.928
45*45*4	2.736	110*110*8	13.532
45*45*5	3.369	110*110*10	16.69
50*50*3	2.332	110*110*12	19.782
50*50*4	3.059	125*125*8	15.504
50*50*5	3.77	125*125*10	19.133
50*50*6	4.465	125*125*12	22.696
63*63*5	4.822	125*125*14	26.193
63*63*6	5.721	140*140*10	21.488
63*63*8	7.469	140*140*12	25.522
70*70*5	5.397	140*140*14	29.49
70*70*6	6.406	160*160*10	24.729
70*70*7	7.398	160*160*12	29.391
70*70*8	8.373	160*160*14	33.987
75*75*5	5.818	160*160*16	38.518
75*75*6	6.905	180*180*12	33.159
75*75*7	7.976	180*180*14	38.383
75*75*8	9.030	180*180*16	43.542
75*75*10	11.089	180*180*18	48.634
80*80*6	7.376	200*200*14	42.894
80*80*7	8.525	200*200*16	48.68
80*80*8	9.658	200*200*18	54.401
80*80*10	11.874	200*200*20	60.056
90*90*6	8.35	200*200*24	71.168
90*90*7	9.656

Application of galvanized angle steel

• Construction field: commonly used in the construction of building frames, such as beams, columns, lap plates, hangers and supports, and can also be used to build roof trusses, wall corners, doors and windows, as well as new energy fields such as solar brackets and wind turbine components.
• Power and communication facilities: used in the construction of power towers and communication towers, and can adapt to harsh outdoor environments. It is also used for substation ancillary facilities.
• Transportation facilities: used for protective facilities on railways and highways, such as guardrails, isolation belts, etc., and also used in street light poles, marine components and other fields.
• Machinery manufacturing field: used to manufacture machine parts, transmission parts and connecting parts, and its durability and plasticity ensure the normal operation of equipment.
• Light industry and manufacturing industry: used for equipment frames and support structures. Its high strength and durability can meet various complex working environments.
• Agriculture and animal husbandry: It can also be used for the construction of shelf construction, greenhouses, farms and other facilities.

Classification of gi angle steel

Classification by process

• Hot-dip galvanized angle steel: It immerses the angle steel in high-temperature molten zinc liquid to make the zinc layer adhere to the surface of it.
• Cold-dip galvanized angle steel: Uses the electrochemical principle to ensure full contact between zinc powder and steel, generating an electrode potential difference for corrosion protection.

Classification by side length

It can also be divided into galvanized equal-leg angle steel and galvanized unequal-leg angle steel. The two vertical sides of the same length are equal-leg angle steel, while the ones with one longer and one shorter are unequal-leg angle steel.

Name	Side length (cm)
Large angle steel	>12.5
Medium Angle Steel	5-12.5
Small angle steel	<5

Chemical composition and mechanical properties

Chemical composition of Gi angle steel

Chemical composition
Element	Percentage
C	0.26
Copper	0.2
Iron	99
Manganese	0.75
Phosphorus	0.04 max
S	0.05 max

Mechanical properties of galvanized angle steel

Density	0.282 lb/in3	7.8 g/cc
Ultimate Tensile Strength	58,000psi	400 MPa
Yield Tensile Strength	47,700psi	315 MPa
Shear Strength	43,500psi	300 MPa
Melting Point	2,590 – 2,670°F	1,420 – 1,460°C
Hardness Brinell	140
Production Method	Hot Rolled
The provided chemical compositions and mechanical properties are general approximations.

Hot dip galvanized Equilateral Angle Steel

Hot-dip galvanized equilateral angle steel is an anti-corrosion profile formed by immersing ordinary carbon steel angle steel into 450°C molten zinc liquid (zinc purity ≥ 98.7%). Its core features include:

1. Equilateral structure: the two limbs are of the same length (such as 50×50mm) and the force is uniform;
2. Zinc layer protection: average zinc thickness ≥ 65μm (Z275 standard), corrosion resistance life of more than 30 years;
3. Process advantages: first processing and then galvanizing, covering the edges and corners without missing plating;
4. Application areas: high-voltage transmission towers, building steel structures, curtain wall supports, and other load-bearing scenes that require long-term rust prevention.

Wanzhi Steel adopts a double-sided zinc blowing process to ensure that the zinc layer is uniform and burr-free, and supports customized length (6-12 meters) and zinc layer thickness (Z30-Z275).

Hot-dipped galvanized

Hot-dipped galvanize (HDG) can be identified by its crystallization pattern, also known as “spangle” on the surface of the material. Galvanized angles have round or tapered edges. Great corrosion resistance, an excellent candidate for outdoor use or exposed environments. Common applications include heating and cooling systems, mounting brackets, structural support, trailers, and docks.

Weight calculation formula

The weight of galvanized angle steel is the same as the calculation formula of angle steel weight.

The weight of angle steel per meter = 0.00785*(edge width + edge width-edge thickness)*edge thickness, in centimeters.

The total weight of each piece = the weight of angle steel per meter*length, that is 0.00785*(edge width + edge width-edge thickness)*edge thickness*length.

Galvanized Angle Steel Supplier- Wanzhi Steel

Galvanized angle steel has become a core material in the fields of electricity, construction, and steel structure due to its advantages of high strength, corrosion resistance, and easy installation.

Wanzhi Steel adopts an advanced hot-dip galvanizing process and strictly implements ISO 9001 standards to ensure a uniform zinc layer (Z30-Z275 optional), and is equipped with a fully automatic cutting production line to support customized specifications and length (6-12 meters). The product has passed the third-party salt spray test, with an anti-corrosion life of more than 30 years, and is widely used in global infrastructure projects.
If you are looking for high-quality materials for your project, please contact us