Steel Domed Head Solid Rivets

Steel domed head solid rivets are subject to strict dimensional inspection before leaving the factory. The diameter tolerance zone is controlled within 0.1 mm. Taking the five millimeter diameter specification as an example, the actual measurement values ​​range from 4.95 to 5.05 millimeters. This ensures that the rivet will fit smoothly into the drilled hole it mates with.

The packaging process adopts the standard specification of 25 kilograms net weight per box. The built-in partitions of the box stack the rivets in layers. The rate of surface scratches caused by collisions during transportation is controlled below 0.5%. Warehouse stacking tests show that this packaging method can prevent the products inside the carton from being scattered when it withstands a drop from a height of 4.5 meters.

The chemical composition of this rivet strictly controls the proportion of sulfur and phosphorus elements. This significantly reduces the material's tendency to become hot and cold brittle. In magnetic testing, the magnetic permeability of high-quality carbon steel matrix is ​​stable at more than one thousand. This feature allows riveted components to be non-destructively inspected by electromagnetic flaw detectors. If there are cracks larger than 0.3 mm inside a rivet with a diameter of eight millimeters, the instrument can accurately identify it.

Obtain drawings from customers or create drawings based on their specifications or samples.

The drawings, product raw materials, surface treatment, and other details are attested to by both parties.

► Cold riveting process is efficient

Rivets with a diameter of 8 mm or less can be cold riveted directly at room temperature without heating equipment. For example, for rivets with a diameter of 4 mm, it only takes 2 to 3 seconds to complete the pier head forming using a pneumatic rivet gun. The installation efficiency is extremely high, and it is especially suitable for mass production line operations.

► Hot riveting ensures connection strength

For large rivets with a diameter of 10 mm and above, the hot riveting process ensures that the pier head is fully filled. The rivets with a diameter of 12 mm are heated to about 1000 degrees Celsius and then riveted. After cooling and shrinkage, a huge clamping force is generated, and the tightness of the joint is far greater than that of bolted connections.

► Fill nail holes to eliminate gaps

The rivet stem expands during riveting, tightly filling the nail hole. The gap between high-quality rivets and the hole wall after riveting is less than 0.1 mm, while the standard gap for bolt connections is 0.5 to 1 mm. This gap-free fit prevents fretting wear and increases joint stiffness by more than 20%.

► Riveting without heat affected zone

The cold riveting process does not generate heat and the structure of the base material is not affected. When rivets with a diameter of less than 6 mm are cold riveted, the heat-affected zone of the connected parts is zero, which avoids the decrease in base metal strength that may be caused by bolt welding or hot riveting. This feature is especially important for galvanized or stainless steel sheets.

◆ Can be stored outdoors

• The thickness of the galvanized layer is more than 12 microns. It will not rust after being stored in the open air for 20 days after the packaging is damaged. During the peak period of construction, it can be stored in batches in advance.

 

◆ Moderate hardness

• The hardness of rivets with a diameter of 5 mm is HRB 70 to 85. An ordinary high-speed steel drill bit can drill more than 200 holes continuously without grinding. The processing efficiency is 40% higher than that of stainless steel rivets.

◆ Color customization

• Through the galvanizing passivation process, the appearance can be adjusted to rainbow colors, blue-white, black and other appearances. The color adhesion of the 4 mm diameter specification is level 5, and the color will not fade after 200 hours of salt spray.

 

◆ Marine rust prevention

• The export packaging uses VCI vapor phase anti-rust film. The 5 mm diameter specifications will have zero rust for 30 days in a 40°C high-humidity container. They can be put on the production line directly upon arrival at the port without cleaning.

Provide a quote, confirm the order quantity, and include all relevant information.

Like the terms of payment, the terms of trade, the kind of packaging, etc.

When manufacturing the goods, adhere precisely to the original drawings and samples.

After a final inspection, it was meticulously packaged and delivered to the customers.

Q : Approximately how many pills are there in a box?
A : Each box has a net weight of 25 kilograms. The 6 mm diameter size contains about 1,800 pieces, and the 4 mm diameter size contains about 5,000 pieces. The specific quantity varies with the diameter.

Q : Will it rust during transportation?
A : No, the cabinets have built-in partitions that are stacked in layers.

Q : What is the minimum order quantity?
A : The specific minimum order quantity is related to the product specifications. MOQ with large rivets' diameter is about 1,000 pieces, and more than 10,000 pieces with small diameter.

Q : How long does it take to ship the order after placing the order?
A : Spot specifications are shipped within 72 hours, and there is sufficient standing inventory for diameters below six millimeters. Customized specifications take seven to ten days, and the delivery time can be written into the contract.

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