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Q235/S235JR/A36/SS400 Carbon steel squre pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
S50C Carbon steel square pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.- St44-2 Carbon Steel Rectangular pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- ST37-2 Carbon steel Rectangular pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
Carbon Steel Rectangular Seamless PipeCarbon steel pipe is mainly divided into: seamless steel pipe for structure, seamless steel pipe for conveying fluid, seamless steel pipe for medium and low pressure boiler, seamless steel pipe for high pressure boiler, seamless steel pipe for oil cracking
Carbon steel pipe is made of carbon steel pipe, carbon content is about 0.05% ~ 1.35%, is the most common kind of steel pipe, such as :10# steel, 20# steel, Q195, Q235,... .
According to the usage standard mainly used :GB/T8162 structure with seamless steel pipe GB/T8163 fluid transmission with seamless steel pipe GB3087 in low pressure boiler with seamless steel pipe GB5310
High pressure boiler with seamless steel pipe GB9948 oil crack with seamless steel pipe- Carbon Steel Rectangular Welded PipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- 45#/C45/A1045 Carbon steel square pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- 30#/C30E/A1030 Carbon steel square pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- 20#/C22/A1020 Carbon Steel Rectangular pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- ASTM A500 Carbon steel square pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
A square tube product is a tubular material with a square cross-section. It is usually made of carbon steel, stainless steel, alloy steel and other materials, with high strength, light weight, corrosion resistance, easy processing and other characteristics. The section size of square tube products can be customized according to the needs, and the length can also be cut according to the needs, so it is very flexible and convenient.
Our high-quality carbon steel rectangular tubes are manufactured from premium carbon steel, available in both seamless and welded construction types. These tubes feature precise right angles and excellent weldability, making them ideal for construction frameworks, machinery guards, and decorative applications. Custom sizes and a variety of surface treatments are also available to meet specific customer requirements.
We operate both advanced welded and seamless manufacturing processes, dedicated to providing global clients with a comprehensive selection of carbon steel rectangular tubes. This ensures every one of your projects receives the most suitable and cost-effective material solution.
Our Welded Rectangular Tube Production Line is renowned for its high efficiency, precision, and flexible customization capabilities. Starting from premium steel strip, we employ precise cold-forming and High-Frequency Welding (HFW) technology. Combined with online real-time monitoring and cutting-to-length, we ensure every tube features excellent weld quality, precise dimensional tolerances, and outstanding straightness. This automated line is the robust foundation that allows us to respond quickly to large-volume orders and reliably supply a wide range of specifications for applications from building structures to storage shelving.
Meanwhile, our Seamless Rectangular Tube Production Line represents superior structural integrity and strength. Manufactured from round steel billets through hot-rolling or cold-drawing processes, its inherent seamless advantage ensures unparalleled reliability and safety when bearing high pressure, impact, and fatigue loads. This product category is the ideal choice for demanding applications such as high-pressure hydraulic systems and load-bearing frames for heavy machinery.
Whether your priority is the cost-effectiveness and flexibility of welded tubes or the superior strength and safety of seamless tubes, we leverage our complete product range and technical expertise to be your trusted global partner.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.
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Related Products
- Q235/S235JR/A36/SS400 Carbon steel squre pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- S50C Carbon steel square pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- St44-2 Carbon Steel Rectangular pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.
- ST37-2 Carbon steel Rectangular pipeSquare tube products are tubular materials with square sections, which have the characteristics of high strength, light weight and corrosion resistance, and are widely used in construction, engineering, machinery and other fields. The production process includes material selection, cutting, forming, welding and surface treatment.