Import Bundy Tube — Buy in Bulk from Supplier in China

The Bundy tube supplied by Qingdao Hainuo Machinery Production Co. Ltd. is a precision-engineered low-carbon steel tube for industrial fluid and gas transport. This listing offers diameters of 4.76 mm, 6.00 mm, 6.35 mm, and 8.00 mm, with wall thicknesses and surface finishes tailored for automotive, HVAC, and plumbing applications. The material’s low-carbon composition ensures good formability and weldability for fabrication into complex assemblies.

Standard Bundy tubes are typically produced from SAE 1006 to 1010 grade low-carbon steel, with tensile strengths in the 300 to 400 MPa range. Typical industry specifications include yield strengths above 200 MPa, elongation greater than 20%, and a smooth zinc or phosphate coating for corrosion resistance. The tube’s double-wall variants provide additional rigidity for high-pressure systems, while single-wall types are common in lightweight applications.

Automotive manufacturers use these tubes for brake lines, fuel rails, and heat exchangers due to their pressure resistance and leak-proof joints. HVAC systems employ them for refrigerant lines, where consistent internal dimensions ensure efficient flow. Buyers should confirm the tube’s burst pressure rating, which for standard Bundy tubes often exceeds 10 MPa, and verify compliance with ASTM A513 or equivalent standards for dimensional tolerance and mechanical properties.

Qingdao Hainuo Machinery Production Co. Ltd. operates from Rm 204, Block A No.81 - A Chongqing South Road in Shandong, China. The company is classified as an imported-tier supplier with a harbor trust level, indicating it has met baseline verification criteria for export readiness. Its address places it in a key industrial hub for metal fabrication and machining, with proximity to Qingdao’s port facilities for efficient logistics.

The supplier’s profile shows a 0% response rate and no recorded average response time, which suggests buyers should proactively reach out for inquiries. While the listing does not state certifications, the product’s alignment with standard Bundy tube specifications implies adherence to common industry practices. The company focuses on metal tubes and related components, with no additional claims about production scale, client base, or proprietary processes.