Import Bicycle Seat Tube — Buy in wholesale FOB from Supplier in Taiwan

Thai Shun Industrial Co., Ltd produces this bicycle seat tube from aluminum alloy AL 6061-T6, a precipitation-hardened grade with magnesium and silicon as principal alloying elements. The T6 temper indicates solution heat treatment followed by artificial aging, which yields a typical tensile strength of 290 megapascals and yield strength of 240 megapascals in standard mill product form. The tube is drawn, tapered, and rotary swaged, processes that cold-work the material to refine wall thickness consistency and improve dimensional precision for frame assembly. The source does not state outer diameter, wall thickness, or length specifications, so buyers must request these critical dimensions.

AL 6061-T6 is the most widely specified aluminum alloy for bicycle frame tubes due to its favourable strength-to-weight ratio, corrosion resistance in atmospheric conditions, and excellent weldability using 4043 or 5356 filler wire. The rotary swaging mentioned by Thai Shun is a rotary forging process that reduces diameter incrementally while maintaining concentricity, a method preferred over simple press tapering for achieving smooth transitions in butted or vari-walled tubes. Standard industry practice for seat tubes includes outer diameters of 28.6, 30.9, or 31.6 millimetres with wall thicknesses from 0.8 to 1.5 millimetres depending on frame design and rider weight targets.

The primary buyers are bicycle frame manufacturers, OEM assemblers, and aftermarket frame builders serving road, mountain, and hybrid bike markets. The supplier offers standard and custom dimensions, though no minimum order quantities, price bands, or lead times are disclosed. FOB and CIF terms are mentioned without specifying departure port or named destination. Buyers should confirm whether Thai Shun supplies raw cut lengths, pre-mitered tubes, or tubes with seat collars and braze-ons already fitted, as this significantly affects downstream manufacturing workflow and total cost.

Thai Shun Industrial Co., Ltd

Taiwan🚢 Voyage

4.5(86)

Thai Shun Industrial Co., Ltd is located at 1F., No. 46, Kaiyuan Road, Dajia District, Taichung City, Taiwan. The supplier holds an organic tier classification and voyage trust tier, with a response rate of 0.00 percent and zero average response hours on the platform. These metrics suggest limited prior buyer interaction through this channel, so direct outreach and reference checks become essential verification steps.

The company profile does not disclose year of establishment, factory floor space, workforce size, annual turnover, or existing OEM clientele. The source description emphasises manufacturing processes, tube drawing, tapering, and rotary swaging, which implies in-house metalworking capability rather than pure trading. Buyers should request a factory audit, quality management system certificates, and welding procedure qualifications if frame assembly services are also offered. The absence of stated production capacity or typical monthly output means lead time estimates must come from direct negotiation.