Shandong Liangshan Qiangsheng Steel Pipe Co., Ltd.
Shandong Liangshan Qiangsheng Steel Pipe Co., Ltd. is a professional enterprise integrating R&D, design, production, and sales. We specialize in producing high-strength square and rectangular tubes and various specifications of cold-formed profiles for semi-trailers and heavy-duty dump trucks, and support customized processing. Our product range is comprehensive.
Located in Liangshan, the hometown of the Water Margin, the company enjoys convenient transportation. Our factory covers an area of over 18,800 square meters and is equipped with advanced forming equipment and 6 professional production lines. We possess a complete quality management system and precision testing equipment, boasting strong technical capabilities and superior product quality.
Key Strengths

Full Product Range & Customized Manufacturing
We specialize in high-strength square tubes, rectangular tubes and various cold-formed profiles for semi-trailers and heavy-duty dump trucks. With complete product categories and integrated R&D, design, production and sales capabilities, we support customized processing to meet client requirements.

Large-scale Factory & Professional Production Lines
Located in Liangshan, Shandong with convenient transportation. Our factory covers an area of over 18,800 ㎡, equipped with advanced forming equipment and 6 dedicated production lines to guarantee stable production capacity.

Robust Quality Control & Strong Technical Strength
We implement a comprehensive quality management system and deploy precision testing equipment. Backed by solid technical expertise, we deliver reliable and consistent product quality.

Customer-oriented Philosophy & Trusted Service
Adhering to the principle of "Build brand through quality, drive development by brand". We offer cost-effective products and premium service, and warmly welcome new and existing customers to visit our factory and discuss cooperation.
FAQ
Can you customize the size of square tubes?
Yes, we support custom size, length and thickness according to your drawings.
What is your delivery time?
Depends on quantity, normally 7–20 days.
What kind of steel grade do you supply?
High strength steel for trailer chassis, can meet your requirement.
How can I get a quotation?
Send us your required size, quantity and application via inquiry form or WhatsApp.
Can you arrange shipment?
Yes, we can cooperate with freight forwarder for sea shipment.








