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Discover our extensive range of Q345/S355JR/Gr.50 Carbon Steel Rectangular Pipes, available in seamless, ERW, and LASW techniques. With wall thicknesses from 0.5MM to 300MM and lengths in single or double random sizes, these pipes are ideal for fence, greenhouse, and construction applications. Meeting API 5L, ASTM, and other international standards, our pipes come with galvanized, PVC, and color painting surface treatments, ensuring durability and rust resistance. Order now for high-quality, affordable carbon steel pipes tailored to your specific needs!

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Zhongxi(Shandong) Metal Technology Co., Ltd. offers high-quality 10#/DC01/A1010 Carbon Steel Square Pipe with customizable sizes and fast delivery. Our square tube products are made of carbon steel and come in seamless, ERW, and LASW techniques. Meeting API 5L and ASTM standards, they are ideal for building construction and scaffolding. With large stocks and free samples, we serve clients in Europe, North America, and more.

Zhongxi(Shandong) Metal Technology Co., Ltd. specializes in manufacturing high-quality 25#/C25E/A1025 Carbon Steel Square Pipe with wall thicknesses ranging from 0.5MM to 300MM. Our products are available in seamless and welded options, and can be customized to meet your specific needs. With ISO CE certification and a monthly production capacity of 500,000 tons, we ensure fast delivery and provide free samples and customized services. Suitable for fence, greenhouse, door pipe, low pressure liquid, water, gas, oil, line pipe, and building construction applications. Contact us for more details.

Zhongxi(Shandong) Metal Technology Co., Ltd. specializes in manufacturing and supplying ASTM A500 standard carbon steel square pipes with customized sizes. Our products feature high strength, corrosion resistance, and easy processing. Available in seamless and welded options, our carbon steel square tubes are widely used in construction, fencing, and low-pressure liquid applications. With large stocks for fast delivery and free samples, we serve clients in over 100 countries and regions.

Zhongxi(Shandong) Metal Technology Co., Ltd. offers high-quality 25x50 rectangular steel pipe in various materials like carbon steel, stainless steel, and alloy steel. Our customizable square tubing includes seamless, ERW, and LASW tubes with wall thicknesses ranging from 0.5mm to 300mm. Fast delivery, free samples, and customized services are available. Compliant with API 5L, ASTM, and GB/T standards, our pipes are ideal for fencing, greenhouses, low-pressure liquid transportation, and scaffolding construction.

Zhongxi(Shandong) Metal Technology Co., Ltd. specializes in manufacturing high-quality 20#/C22/A1020 carbon steel rectangular pipes with ISO CE certification. Our pipes come in various wall thicknesses, widths, and lengths, and can be customized according to your needs. We offer seamless and welded options, with surface treatments such as galvanized, PVC coating, and more. Suitable for fencing, greenhouse construction, and other applications, our pipes meet various international standards. Fast delivery and free samples are available. Contact us for more information.

Zhongxi(Shandong) Metal Technology Co., Ltd. specializes in manufacturing high-quality 30#/C30E/A1030 carbon steel square pipes with ISO CE certification. We offer seamless, ERW, and LASW tubes with wall thicknesses ranging from 0.5mm to 300mm and customizable sizes. Our pipes are widely used in fencing, greenhouse construction, low-pressure liquid transfer, and scaffolding. Fast delivery, free samples, and customized services are available. Compliant with API 5L, ASTM A53, and other international standards.

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