Import Cold Drawn Precision Tube For Gas Spring — Buy in Bulk from Supplier in China

Cold drawn precision tubes for gas springs from Taian Henson Metal Co., Ltd. are manufactured to DIN 2391, EN 10305-1, ASTM A179, ASTM A192, and ASTM A519 standards. Outer diameters range from 8 mm to 50 mm, with wall thicknesses between 0.5 mm and 50 mm. These tubes are produced via cold drawing or cold rolling, followed by heat treatment in conditions designated as BK, BKS, or NBK to ensure dimensional stability and surface integrity.

The material selection includes SAE1010, SAE1020, #10, #20, #45, 304, and 316 stainless steels, chosen for their machinability, fatigue resistance, and corrosion performance. Tubes for gas springs require high surface hardness and low internal friction. Typical surface roughness is Ra ≤ 0.4 µm, and internal bore is honed to ensure smooth piston movement. The wall thickness range allows for both light-duty and heavy-load applications.

These tubes are primarily used in automotive gas struts, industrial actuators, and medical equipment. Buyers include manufacturers of pneumatic systems, OEMs in the automotive aftermarket, and producers of ergonomic furniture. Minimum order quantities are not specified, but production is optimized for medium-volume runs. Packaging is in protective plastic sleeves with cardboard bundling. Delivery is typically FOB Qingdao or Shanghai. Buyers should confirm heat treatment condition and dimensional consistency per batch.

Taian Henson Metal Co., Ltd. is based in Taian, Shandong Province, and specializes in precision steel tubing for gas springs and hydraulic components. The supplier is classified as imported-tier and harbor-tier, indicating export activity and documented trade history. The listing confirms production capability in cold drawing and heat treatment but provides no details on factory size, workforce, or quality management systems.

No certifications such as ISO 9001, IATF 16949, or material traceability documentation are mentioned. The supplier's response rate and average response time are not recorded, suggesting limited buyer engagement. Buyers should request samples with full test data and verify that heat treatment conditions (BK/BKS/NBK) are consistently applied per batch.