Black Round Steel Pipe

A black round steel pipe is a carbon structural round tube made from hot-rolled steel coils, formed, and welded using the ERW process. The surface retains its natural oxide scale, ranging in color from dark gray to black, and is not galvanized or coated. Round black steel tubing possesses good strength, weldability, and machinability, making it suitable for industrial and construction applications where corrosion resistance requirements are not high but reliable mechanical support or low-pressure fluid transport is necessary.

 Chemical composition testing is performed on each batch of raw materials upon arrival at the factory;

 100% online eddy current testing + hydrostatic testing is conducted during the production process;

 Dimensional tolerances and straightness are checked during finished product sampling;

 MTR and ISO 9001 quality system certification documents are provided;

  Zero non-conforming products leave the factory, and quality is traceable.

 Industrial Structures: Shelf uprights, workbench frames, guardrails, machinery and equipment supports

 Construction: Scaffolding crossbars, temporary fencing, formwork supports

 Fluid Systems: Compressed air pipes, low-pressure steam pipes, inert gas transport

 Furniture Manufacturing: Table and chair legs, display racks, fitness equipment frames

 Agricultural Facilities: Greenhouse frames, agricultural machinery support components

> ⚠Caution: Not suitable for long-term outdoor exposure, high humidity, marine environments, or drinking water systems.

• Quality Issues: We offer return, exchange, or compensation solutions.
• Technical Consultation: We provide free material selection, processing suggestions, and standard comparison services.
• Order Tracking: Dedicated customer service staff will follow up on the production, inspection, and shipping progress throughout the process.
• Sample Support: We send free samples; freight collect.

Choosing Wuxi Chengxingchuang means choosing a high-performance, high-reliability, and high-response round steel black pipe supplier!