Import Asme Sa179 Steel Tubing — Buy in Bulk from Supplier in China

ASME SA179 steel tubing from Sunny Steel Tubosacero Ltd. is a cold-drawn, low-carbon seamless steel tube specified for heat exchanger and condenser service. The supplier notes that all tubes ship per applicable ASTM specification, with mill test certificates issued to EN 10204.3. Testing follows A450 / A450M procedures. The specification allows both inch-pound and SI units, though the two are not exact equivalents and must not be combined. The tubes are seamless, not welded, and intended for thermal transfer equipment.

SA179 is a standard grade in the boiler tube family, with carbon content typically around 0.06-0.18% and manganese at 0.27-0.63%, though buyers should request the mill certificate for the exact heat analysis. The cold-drawn manufacturing process yields closer dimensional tolerances and improved surface finish compared to hot-finished alternatives. Wall thickness uniformity and OD concentricity are critical for heat transfer efficiency. The material offers good thermal conductivity and forms readily for U-bend configurations, though post-bend stress relief is standard practice.

This tubing serves heat exchangers, condensers, and similar heat transfer equipment in power generation, petrochemical, and HVAC systems. Importers typically source SA179 in random lengths or alongside SA192, SA210, or SA213 grades depending on pressure and temperature requirements. Buyers should confirm whether Sunny Steel Tubosacero Ltd. stocks cut lengths or only mill randoms, and whether third-party inspection is available before shipment from Shanghai or another Chinese port.

Sunny Steel Tubosacero Ltd. is located at No.273, Siping Road, Hebei District, Shanghai 200081, China. The company name suggests a steel tubing specialisation, though its exact founding date,_progduction capacity, and workforce size are not stated in the listing data. The supplier tier is marked as "imported" with a "harbor" trust tier. The response rate is shown as 0.00% and average response hours as zero, which may indicate no recent inquiry activity or incomplete platform engagement rather than an active rejection rate.

The listing provides limited supplier-specific detail beyond address and product focus. There is no stated ISO certification, no claimed annual turnover, and no named domestic or international client base. Buyers should treat this as a trade enquiry requiring direct verification of the mill relationship, whether Sunny Steel Tubosacero Ltd. operates its own drawing facility or sources from partnered mills, and what quality control steps precede shipment. The mention of EN 10204.3 mill certificates and A450 testing suggests at least documentary traceability, but importers are advised to request a sample certificate and reference mill name before committing to volume orders.