S235JR Welded Square Pipe

Product introduction

S235JR is a non-alloy structural steel that is widely used for manufacturing steel products.Due to its high tensile strength and
other mechanical properties this it is considered as one of the best grades of industries used for manufacturing. These square
tubes are known best for their high tensile strength, durability, workability, long functional life, formability, dimensional accuracy,
and ductility. They are even designed in such a way that it can easily fulfill the needs of a variety of applications.

Equivalent Grade of S235JR Square Tubes

Founded in 1997, Jingui Machinery Processing Co., Ltd. is a China-based manufacturer specializing in custom metalworking, machinery manufacturing, precision parts processing, laser cutting, welding, and non-standard equipment manufacturing.

Located in Caizhuang Industrial Park, Laoting County, Tangshan City, our manufacturing facility has a total construction area of approximately 5,500 square meters, supported by dedicated production areas and a team of skilled machining and welding professionals.

Comprehensive Manufacturing Capabilities

Jingui operates a wide range of conventional and CNC manufacturing equipment, including CNC gantry milling machines, CNC machining centers, vertical milling machines, drilling and boring machines, gear hobbing machines, large lathes up to Φ1,600 mm, thread rolling machines, large-format laser cutting machines, CNC cutting machines, plate shearing and bending machines, plate rolling machines, plate flattening machines, a 400-ton hydraulic press, and multiple welding machines.

This equipment enables us to handle a broad range of custom manufacturing requirements, from individual metal components and fabricated parts to large non-standard equipment and complete machinery assemblies.

Our manufacturing capabilities include:

• CNC machining and precision parts manufacturing
• Laser cutting and CNC cutting
• Sheet metal fabrication
• Welding and structural fabrication
• Casting and machining
• Large-part and heavy machining
• Non-standard equipment manufacturing
• Custom metal components
• Machinery assembly and maintenance

Engineering & Product Development

Jingui has developed proprietary products and manufacturing solutions for industrial applications. The grain storage roof sealing support independently developed by our company has been applied in the construction of national grain reserve facilities in China.

We also hold one national invention patent and two utility model patents. These achievements reflect our continued investment in engineering development, manufacturing technology, and product improvement.

From Raw Materials to Finished Products

We provide an integrated manufacturing service covering material procurement, production, machining, fabrication, assembly, installation, inspection, delivery, and after-sales support.

By keeping key manufacturing processes under our own production control, we can respond flexibly to customized requirements while maintaining consistent quality and production efficiency.

Whether you need custom metal parts, fabricated components, precision machining, or non-standard machinery, our engineering and production teams work closely with customers to develop practical manufacturing solutions based on their drawings, specifications, and application requirements.

Building Long-Term Partnerships

With more than 25 years of manufacturing experience, Jingui is committed to providing reliable products, responsive service, and practical manufacturing solutions.

We believe long-term cooperation is built on consistent quality, transparent communication, and dependable delivery. We continue to improve our manufacturing capabilities and develop new products to meet the evolving requirements of industrial customers.