Import Din St35 Amall Diameter Carbon Steel Pipe — Buy in Bulk from Supplier in China

The DIN ST35 small diameter carbon steel pipe from Changzhou Chengqi Steel Pipe Factory is manufactured to DIN 17175 standards for seamless tubes used in pressure applications. It is produced from low-carbon steel with a carbon content between 0.17% and 0.24%, and a maximum manganese content of 0.70%. The pipe has a typical outer diameter range of 10mm to 60mm and wall thicknesses from 1.0mm to 4.0mm, suitable for fluid transport in mechanical and industrial systems.

Surface finish is described as bright and oxide-free, achieved through cold drawing and pickling processes. The inner and outer surfaces are free from scale, cracks, and laminations, meeting standard surface quality requirements for seamless tubes. The material has a tensile strength of approximately 370 to 500 MPa and elongation of at least 25%, typical for ST35.8 grade. It is not intended for high-temperature service above 350°C or for cyclic loading applications.

These pipes are commonly used in hydraulic systems, instrumentation lines, heat exchanger tubing, and structural supports in light machinery. Buyers in automation, food processing, and HVAC sectors source them for their dimensional consistency and smooth bore. Packaging is in bundles wrapped with plastic and steel strapping, with lengths of 5 to 6 meters. Trade terms include FOB Ningbo and CIF, with lead times of 20 to 30 days. Minimum order quantity is typically 1 metric ton per size.

Changzhou Chengqi Steel Pipe Factory is located in No.78, Suntang Village, Qinxin Town, Changzhou, Jiangsu, China, and specializes in seamless carbon steel tubes for industrial use. The supplier is registered as an exporter and operates a facility with cold drawing and heat treatment lines. The listing does not state workforce size, annual production volume, or third-party audit status. No certifications such as ISO 9001 or EN 10216 are confirmed.

The supplier has no recorded response rate or average response time on the platform. There is no public information on quality control procedures, material traceability, or client references. The company appears to focus on standard DIN and GB pipes without custom machining or coating services. Buyers must request material test reports and dimensional inspection reports directly before placing orders.