K9 Black Ductile Iron Pipe is a high-strength, corrosion-resistant pipeline product widely used in water supply and municipal engineering. Manufactured to strict international standards, the K9 grade ensures excellent mechanical properties, high pressure bearing capacity, and reliable toughness, effectively preventing cracks and breakages during installation and operation. With a black anti-corrosion surface treatment, it offers long service life and strong adaptability to various underground environments. Featuring good sealing performance and easy connection, it is widely applied in drinking water transmission, drainage networks, and urban infrastructure construction, providing safe and stable fluid transportation for long-term engineering use.

EN545/EN598 C25/C30/C40 Ductile Iron Pipe is a high-performance piping solution compliant with European standards, designed for water, sewage, and industrial applications. Featuring superior strength, corrosion resistance, and durability, it withstands high pressure (up to C40) and harsh environments. The pipe’s nodular graphite structure ensures impact resistance and long service life, minimizing maintenance costs. Ideal for municipal infrastructure, industrial plants, and irrigation systems, it guarantees reliability, safety, and cost-efficiency for global projects.

Spiral Welded Steel Pipe, also known as SSAW pipe, is fabricated by rolling steel strip coils into a cylindrical form at a fixed helical angle and welding the seam via submerged arc welding. This process enables cost-effective production of large-diameter, long-length pipes with excellent structural rigidity and pressure resistance. Widely applied in oil and gas transmission, water supply, sewage disposal, piling, and municipal engineering, it delivers stable performance and meets stringent industrial standards for fluid transport and structural support. Choose our high-quality Spiral Welded Steel Pipe for your next project to experience unparalleled performance and value.

Discover our range of high-quality Q235/S235JR/A36/SS400 carbon steel square pipes available in seamless, ERW, and LASW tubes. With wall thicknesses ranging from 0.5MM to 300MM and widths from 10MM to 1200MM, our pipes meet various standards including API 5L, ASTM, and GB/T. Suitable for fencing, greenhouses, construction, and scaffolding, our pipes come with a variety of surface treatments and can be customized to your specifications. Order now!

Discover our range of Q275/S275JR/SM490 carbon steel rectangular pipes available in seamless, ERW, and LASW tubes with wall thicknesses ranging from 0.5MM to 300MM. Our pipes come with various surface treatments and meet API 5L, ASTM, and GB/T standards. Suitable for fence, greenhouse, door pipe, low-pressure liquid, water, gas, oil, line pipe, and building construction, our pipes are also ideal for scaffolding. Choose from different material specifications and packing options. Get detailed container dimensions for shipping.

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!

Discover our range of high-quality Q195/A283/BS 970-1 Carbon Steel Rectangular Pipe available in seamless, ERW, and LASW tubes. With wall thicknesses ranging from 0.5MM to 300MM and widths from 10MM to 1200MM, our pipes are suitable for various applications including fencing, greenhouse construction, low-pressure liquid transportation, and scaffolding. Available in galvanized, PVC-coated, and other surface treatments, our pipes meet API 5L, ASTM, BS, and GB/T standards. Custom packing and shipping options are also available.

Discover our range of high-quality Q215/A573 carbon steel rectangular pipes available in seamless, ERW, and LASW tubes. With wall thicknesses ranging from 0.5MM to 300MM and customizable lengths, surfaces, and edges, our pipes meet API 5L, ASTM, and GB/T standards. Ideal for fence, greenhouse, construction, and scaffolding applications. Custom packing and container dimensions available.

Discover the versatility of Q255/SS400 Carbon Steel Square Pipe, available in seamless, ERW, and LASW tubes with wall thicknesses ranging from 0.5MM to 300MM. Suitable for fence, greenhouse, and building construction, as well as low-pressure liquid, water, gas, and oil line pipes. Meets various standards including API 5L, ASTM A53, and BS 1387. Customize your order with various surface treatments, lengths, and edge preparations. Convenient packing options and container dimensions available to suit your needs.

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.