Q235A/S235JR/A36/SS400 Seamless Steel Pipe
We supply seamless steel pipes manufactured through advanced hot-rolled or cold-drawn processes, offering superior structural integrity and pressure resistance for demanding industrial applications. With no welded seams, these pipes provide consistent wall thickness, excellent mechanical properties, and enhanced safety in high-pressure and high-temperature environments.
+86 19163584547
+86 19163584547
+86 19163584547
info@hds-steels.com
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Product Description

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  • High Pressure Resistance: Uniform structure ensures reliable performance in hydraulic, pneumatic, and process piping systems

  • Excellent Dimensional Accuracy: Precise wall thickness and roundness control for seamless integration into complex assemblies

  • Wide Material Range: Available in carbon steel, alloy steel, and stainless steel grades including ASTM A106, A333, API 5L, and AISI 300/400 series

  • Superior Corrosion & Temperature Resistance: Suitable for harsh environments including chemical processing, oil & gas, and power generation

Ideal for oil and gas transportation, boiler tubes, mechanical cylinders, automotive systems, and structural components. We offer custom cutting, threading, heat treatment, and full certification compliant with international standards including ASTM, ASME, DIN, and API.


Product NameQ235A/S235JR/A36/SS400 Seamless Steel Pipe
TechniqueERW pipe
Wall Thickness0.5MM~300MM
Outer Diameter21.3MM~660MM
LengthLength:Single random length/Double random length
Surface Treatment1. Galvanized
2. PVC,Black and color painting
3. Transparent oil,anti-rust oil
4. According to clients requirement
StandardAPI 5L, ASTM A53-2007, ASTM A671-2006, ASTM A252-1998, ASTM A450-1996, ASME B36.10M-2004, ASTM A523-1996, BS 1387, BS EN10296, BS 6323, BS 6363, BS EN10219, GB/T 3091-2001, GB/T 13793-1992, GB/T9711
Application1. Fence, greenhouse, door pipe,greenhouse
2. Low pressure liquid, water, gas, oil, line pipe
3. For both indoor and outdoor the building construction
4. Widely used in scaffolding construction which is much cheaper and convenient
EdgePlain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc.
MaterialQ235B,A36,S235JR,SS400,ST37 etc
PackingBundle, or with all kinds of colors PVC or as your requirements
Container Dimension20ftGP:5898mm(Length)x2352mm(Width)x2393mm(High)   24-26CBM
40ftGP:12032mm(Length)x2352mm(Width)x2393mm(High)  54CBM
40ftHC:12032mm(Length)x2352mm(Width)x2698mm(High)    68CBM


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Our seamless carbon steel pipes are manufactured from high-quality materials complying with international standards including ASTM A106, API 5L, and ASTM A53. These pipes feature excellent pressure resistance and durability, making them ideal for oil & gas, petrochemical, and high-pressure fluid transportation applications. Custom lengths and end treatments are available to meet specific project requirements.


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Produced using precision hot-rolled or cold-drawn processes, our seamless pipes undergo strict quality control during piercing, elongation, and sizing. Equipped with automated ultrasonic testing (UT) and eddy current inspection systems, we ensure consistent wall thickness (±10%) and superior internal/external surface quality. 


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详情标题1-产品详情3


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.


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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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