Products Description
Heavy Duty ASTM Q235 Q355 Grade B Carbon Steel Tube/Pipe
Our carbon steel tubes are precision-engineered to serve the demanding needs of heavy machinery manufacturing and structural construction. Available in both seamless (outer diameter 10.3–610.0mm) and welded (outer diameter 21.3–1220.0mm) conditions, these tubes offer superior tensile strength, excellent load-bearing capabilities, and outstanding structural durability across diverse environments.
Supplied in grade Q235 and A36 for general structural and framing applications, and grade Q355 / S355JR with high yield strength for heavy engineering-ideal for load-bearing columns, bridge structures, and high-pressure fluid transportation. Surface finishes include Bare, Black Painted, Anti-Corrosion Varnish, and Hot-Dip Galvanized, with optional end protection plastic caps.
Our tubes are manufactured under strict quality control, ensuring uniform wall thickness, tight dimensional tolerances, and consistent mechanical properties suitable for bending, cutting, threading, and welding processes. Typical machinery uses include hydraulic cylinder barrels, automotive drive shafts, and equipment frames; construction applications cover scaffolding, building trusses, piling pipes, and utility transport lines.
We require a minimum order quantity of just 1 ton, making high-quality carbon steel accessible for both custom fabrications and bulk procurement. Each batch is supplied with full mill test certificates, ensuring traceability and compliance with ASTM A53 / ASTM A106 / EN 10210 standards. Fast delivery, competitive pricing, and tailor-made length/cutting options available upon request. Partner with us for reliable performance and cost-effective solutions.
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Product name |
Carbon Steel Tube/Pipe |
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Length |
6m, 12m or customized |
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Shape |
Round, Square, Rectangular, Oval, Special Profile |
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Thickness |
0.5mm-30mm or customized |
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Standard |
AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc |
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Technique |
Seamless (Cold Drawn, Hot Rolled), Welded (ERW, LSAW, SSAW) |
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Material |
Grade B, Q235, Q355, S235JR, S355JR, SAE 1020, SAE 1045, ST37, ST52, A179 |
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Application |
Structural Construction, Oil & Gas Transportation, High-Pressure Fluid Lines, Scaffolding, Hydraulic Cylinders, Machinery Manufacturing, Boiler & Heat Exchanger Units |
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Package |
Waterproof paper, and steel strip packed. |
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Payment terms |
30%T/T Advance + 70% Balance |
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Delivery time |
Fast delievery in 7 days,up to order quantity |
main product
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