Stainless Steel Self-drilling Bolts

• 1.1

304 stainless steel drill bolts:

Features: Austenitic stainless steel, non-magnetic under normal conditions, slightly magnetic after cold working, can maintain austenitic structure at various temperatures, good corrosion resistance, but low mechanical properties.

Use scenario: Suitable for the connection of materials such as aluminum-plastic panels, plastics, plastic-steel doors and windows, and glass curtain walls, and can directly penetrate and complete tapping and locking. For example, in building decoration projects, it is used to fix plastic decorative panels, aluminum alloy door and window frames, etc.; in billboard production, it is used to fix panels on steel structure frames.

• 1.2

410 stainless steel drill bolts:

Features: The core and surface hardness can be improved through heat treatment, and the comprehensive mechanical properties are high, but the corrosion resistance is worse than 304 stainless steel.

Use scenario: It can be used to penetrate the connection of harder metal materials such as iron plates. It is suitable for occasions with high requirements for mechanical properties and relatively weak environmental corrosion, such as the connection of steel structure components in general industrial plants, but it should be avoided in corrosive environments such as strong acid, humidity, seaside, and near chemical plants.

• 1.3

316 stainless steel drill bolts:

Features: It belongs to the 400 series stainless steel, with stronger acid and alkali resistance and weather resistance in coastal areas and highly polluted climates.

Use scenarios: It is used in highly polluted environments, coastal areas, high temperature and humid environments, and areas where automobiles and factories emit a large amount of sulfide-containing exhaust gas and particulates. Such as the connection of building steel structures in coastal areas, the fixing of equipment in chemical companies with highly corrosive gas environments, etc.

• 1.4

Composite stainless steel drill bolts:

Features: The drill bit is made of carbon steel to ensure hardness and drilling ability, and the thread and head are made of 304 stainless steel to ensure rust resistance.

Application scenarios: Suitable for occasions with high requirements for drilling efficiency and anti-rust performance, such as high-altitude operations or steel structure projects with difficult footholds, which can reduce the burden on users and achieve efficient cutting effects. It is also used in some industrial and civil construction steel structure projects with high requirements for comprehensive performance.

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