Import Brass — Buy in Bulk from Supplier in China

Changzhou Ruibo Hardware Technology Co., Ltd offers a Brass OEM service for tube nuts, machined from a copper‑zinc alloy that generally contains 60‑65 % copper and 35‑40 % zinc. The component is supplied as a plain‑finished, non‑standard part that can be customised to the buyer’s drawing. The listing notes that the material complies with the supplier’s internal quality system, ISO 9001:2008, and that samples are available within seven days. Orders are packed in cartons with additional plastic bags for protection.

Typical tube nut specifications include thread sizes from M6 to M24, with tolerance class 6g/6H as defined by ISO 965. Standard hardness for this brass grade ranges between 70 and 120 HB, and tensile strength is usually 300‑500 MPa. The component’s density of about 8.5 g cm‑3 influences the overall weight of bulk orders. Because the part is non‑standard, dimensions are verified against the CAD drawing supplied by the buyer.

Manufacturers of automotive, plumbing and HVAC systems commonly source these nuts for assembly where corrosion resistance and conductivity are required. Trade terms are negotiated per contract, with typical incoterms such as FOB Changzhou and payment by T/T after order confirmation. Prospective importers should confirm the exact thread profile, material certification and packaging details with Changzhou Ruibo before placing the order.

Changzhou Ruibo Hardware Technology Co., Ltd is situated in Room 1601, Building B, WTC, Changzhou, No.2 Mid Changzhou, Jiangsu 213161, China. The company carries a harbor trust tier, indicating a moderate verification level, although its response rate is recorded as 0 % with no average response time disclosed. The profile highlights that the firm provides OEM precision brass parts and operates under an ISO 9001:2008 quality management system.

The supplier’s catalogue specifies that the brass tube nuts are supplied plain, with custom dimensions based on buyer drawings, and are packed in cartons with additional plastic bags for protection. No explicit lead‑time is listed beyond a sample delivery within seven days, and the standard delivery window after order confirmation is stated as 30 days. Buyers should request the ISO 9001 certificate and any material test reports to confirm compliance before finalising the purchase.