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DIN603
HNF
HNF2024112202
High Strength 4.8/8.8/10.9/12.9 Grade Carbon Steel HDG Black Carriage Bolt Use for Electric Tower
Product Description
Blackened carbon steel carriage bolts are bolts made of carbon steel as the base material. Carbon steel is an iron-carbon alloy with a carbon content of 0.0218% - 2.11%. It has high strength and toughness and can withstand certain tensile and shear forces. "Blackening" is a surface treatment process that forms a black oxide film on the surface of the bolt through chemical or heat treatment methods.
Product Details
Production Process
Product Application
In the field of solar panel installation, it can be used to fix brackets in some occasions where the appearance is required to be coordinated with the surrounding environment (such as the installation of solar panels on some retro-style buildings) and the anti-rust requirements are not particularly high. In the traditional woodworking industry, it is used to connect wooden structures, such as the restoration of ancient buildings or the production of some wooden crafts. It is also used in the connection of some mechanical parts that have requirements for mechanical strength and are not very sensitive to environmental corrosion. However, during use, it is necessary to pay attention to the applicable environmental humidity and pH, and avoid using it in an overly harsh corrosive environment, otherwise its performance may be affected by rust.
Company Services
Haina is committed to providing customers with high-quality stainless steel standard fasteners and professional services to meet various engineering needs. We have a large amount of spot inventory to ensure fast delivery and save you waiting time. In addition, we provide the following value-added services to help your purchasing experience:
1. Free samples: provide samples for customer testing.
2. 3.1 Test report: quality test report that meets international standards.
3. Video factory inspection: support video factory inspection to demonstrate production process and quality management.
Advantages
- Sufficient inventory: quick response to order requirements.
- Quality assurance: strict quality control to ensure product reliability.
Haina is committed to providing efficient and high-quality fastener services.
FAQ
1.Compared with galvanized carriage bolts, what are the advantages and disadvantages of blackened carbon steel carriage bolts?
Advantages: In terms of cost, the blackening treatment cost is low, and the product price is more advantageous. In terms of appearance, it has a black and simple texture, which is suitable for retro style scenes. It has a certain wear resistance and can cope with slight friction. The processing performance is good and it is easy to manufacture a variety of specifications.
Disadvantages: Poor rust resistance, easy to rust in a humid or corrosive environment. Weak corrosion resistance, the service life may be affected.
2.What methods can be used to improve the rust resistance of blackened carbon steel carriage bolts?
a. Apply anti-rust paint b. Use anti-rust oil c. Wax seal treatment d. Add passivation layer
3.What is the passivation treatment process of blackened carbon steel carriage bolts?
a.Surface pretreatment - First clean the bolts thoroughly, remove oil with organic solvents or alkaline cleaning agents, then use pickling (such as dilute hydrochloric acid) to remove rust, and then wash with clean water and dry. b. Passivation treatment - prepare a passivation solution, such as chromate passivation solution (containing chromic anhydride, nitric acid, etc.), and soak the bolts in it for a certain period of time. The temperature and soaking time depend on the formula and bolt requirements. c. Post-treatment - After soaking, take out and wash with clean water. After drying, you can also perform sealing treatment (such as using organic coating) to improve the passivation effect.
High Strength 4.8/8.8/10.9/12.9 Grade Carbon Steel HDG Black Carriage Bolt Use for Electric Tower
Product Description
Blackened carbon steel carriage bolts are bolts made of carbon steel as the base material. Carbon steel is an iron-carbon alloy with a carbon content of 0.0218% - 2.11%. It has high strength and toughness and can withstand certain tensile and shear forces. "Blackening" is a surface treatment process that forms a black oxide film on the surface of the bolt through chemical or heat treatment methods.
Product Details
Production Process
Product Application
In the field of solar panel installation, it can be used to fix brackets in some occasions where the appearance is required to be coordinated with the surrounding environment (such as the installation of solar panels on some retro-style buildings) and the anti-rust requirements are not particularly high. In the traditional woodworking industry, it is used to connect wooden structures, such as the restoration of ancient buildings or the production of some wooden crafts. It is also used in the connection of some mechanical parts that have requirements for mechanical strength and are not very sensitive to environmental corrosion. However, during use, it is necessary to pay attention to the applicable environmental humidity and pH, and avoid using it in an overly harsh corrosive environment, otherwise its performance may be affected by rust.
Company Services
Haina is committed to providing customers with high-quality stainless steel standard fasteners and professional services to meet various engineering needs. We have a large amount of spot inventory to ensure fast delivery and save you waiting time. In addition, we provide the following value-added services to help your purchasing experience:
1. Free samples: provide samples for customer testing.
2. 3.1 Test report: quality test report that meets international standards.
3. Video factory inspection: support video factory inspection to demonstrate production process and quality management.
Advantages
- Sufficient inventory: quick response to order requirements.
- Quality assurance: strict quality control to ensure product reliability.
Haina is committed to providing efficient and high-quality fastener services.
FAQ
1.Compared with galvanized carriage bolts, what are the advantages and disadvantages of blackened carbon steel carriage bolts?
Advantages: In terms of cost, the blackening treatment cost is low, and the product price is more advantageous. In terms of appearance, it has a black and simple texture, which is suitable for retro style scenes. It has a certain wear resistance and can cope with slight friction. The processing performance is good and it is easy to manufacture a variety of specifications.
Disadvantages: Poor rust resistance, easy to rust in a humid or corrosive environment. Weak corrosion resistance, the service life may be affected.
2.What methods can be used to improve the rust resistance of blackened carbon steel carriage bolts?
a. Apply anti-rust paint b. Use anti-rust oil c. Wax seal treatment d. Add passivation layer
3.What is the passivation treatment process of blackened carbon steel carriage bolts?
a.Surface pretreatment - First clean the bolts thoroughly, remove oil with organic solvents or alkaline cleaning agents, then use pickling (such as dilute hydrochloric acid) to remove rust, and then wash with clean water and dry. b. Passivation treatment - prepare a passivation solution, such as chromate passivation solution (containing chromic anhydride, nitric acid, etc.), and soak the bolts in it for a certain period of time. The temperature and soaking time depend on the formula and bolt requirements. c. Post-treatment - After soaking, take out and wash with clean water. After drying, you can also perform sealing treatment (such as using organic coating) to improve the passivation effect.
