The photo below shows black high-strength square and rectangular steel tubes (hollow sections) stacked in bundles in our warehouse, ready for lifting and dispatch.
A semi-trailer manufacturer used to source square steel tubes, rectangular steel tubes, and cold-formed steel profiles from different mills. Qiangsheng Steel consolidated everything into a single order — a complete range of high-strength square tubes and rectangular tubes for trailer frames and truck bodies, custom tube sizes, one quality standard, and staged delivery matched to the customer’s production schedule.
- Complete range: high-strength square tubes, rectangular tubes, cold-formed profiles for semi-trailers & dump trucks
- Custom square/rectangular tube sizes and wall thickness supported
- Bulk supply direct from a China steel tube manufacturer, with staged dispatch to match your production plan
About Qiangsheng Steel
Shandong Liangshan Qiangsheng Steel Pipe Co., Ltd. is an integrated R&D, design, production, and sales enterprise specializing in high-strength square tubes, rectangular tubes, and cold-formed profiles for semi-trailers and heavy-duty dump trucks. Our 18,800+ m² factory runs six professional production lines, supported by a complete quality management system and precision testing equipment. Located in Liangshan, Shandong, we offer custom processing, a complete product range, and competitive pricing.
Interested? Send your specification list — tube sizes, quantities, delivery schedule. Reply within 24 hours.
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