Carbon steel pipe is characterised by its outstanding properties, including high yield strength and resistance to stress corrosion, and it offers good weldability, with low susceptibility to cold and hot cracks during welding.
Carbon steel tubes are classified as either hot-rolled or cold-rolled (drawn) steel tubes.
Hot-rolled carbon steel tubes are categorised into general-purpose steel tubes, low- and medium-pressure boiler tubes, high-pressure boiler tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological tubes and other steel tubes.
Carbon Steel: Properties, Production, Examples and Applications Carbon steel is an iron-carbon alloy containing up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements; however, they often contain manganese. The maximum content of manganese, silicon and copper should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.
| Place of Origin: | China |
| Oiled or Unoiled: | Un-oiled |
| Alloy or Not: | Non-alloy |
| Tolerance: | ±1% |
| Special Pipe: | Thick-walled pipe, EMT pipe |
| Outer Diameter: | 10–1,500 mm |
| wall thickness | 0.4–25 mm |
| Length: | 1–12 m |
| Shape: | Round, Square or Rectangular |
| Items: | 4 6 12-inch SCH 40 80 black carbon steel pipe |
| processing service | Bending, Welding, Uncoiling, Punching, Cutting |
| Secondary or Not: | Non-secondary |
| technology | hot-rolled, cold-rolled, black annealed |
| Keyword: | welded steel pipe |
| End protector: | Plastic Pipe Cap |
| Thickness: | 0.35–100 mm |
| Standard: | API, ASTM, BS, GB, API 5L, ASTM A106-2006, ASTM A53-2007, BS 1387, BS 1139, BS EN 10219, GB 3087-1999, GB/T 3901, EN, BS, JIS |
| Technique: | ERW / LSAW / SSAW |
| Surface Treatment: | Oil paint; Varnish; Galvanised; |
| Galvanise the raw strip steel; | |
| Certificate: | BSI, RoHS, SNI, BIS, SASO, SONCAP, SIRM, ISO 9001, API, ISO |
| Grade: | 10#, 20#, 45#, Q235, Q345, Q195, Q215, ST52, |
| ST42, ST35, 10#–45#, Q195–Q345, ST35–ST52 | |
| Q235, Q235B, S275, S275jr, A53, ST37, ST52 | |
| Q195 → Grade B, SS330, SPHC, S185 | |
| Q215 → Grade C, CS Type B, SS330, SPHC | |
| Q235 → Grade D, SS400, S235JR, S235JO, S235J2 | |
| Q345 → SS500, ST52 | |
| Usage: | mechanical engineering, the construction sector, |
| metallurgical industry, agricultural vehicles, agricultural greenhouses, | |
| automotive industry, railways, motorway crash barriers, | |
| container frame, furniture, decoration, steel structure, | |
| Chemical Fertiliser Pipes, Structural Pipes, Building Construction | |
| package | Standard Seaworthy Packaging |
| secured with steel straps, then wrapped in plastic | |
| or as requested | |
| Payment Terms: | L/C, T/T (30POSIT) |
As an experienced steel manufacturer in China, we offer factory-direct supply at competitive prices. By cutting out unnecessary intermediaries, we help our customers source reliable steel products that offer excellent value and cost-effectiveness.
We supply a wide range of metal products, including carbon steel, stainless steel, galvanised steel, aluminium, copper, PPGI/PPGL coils, roofing sheets and more. Our extensive product range enables us to meet the needs of a variety of industries and projects.
Quality is maintained throughout the entire production process. From carefully selected raw materials through to manufacturing, processing and final inspection, every step is strictly monitored to ensure consistent quality and compliance with customer requirements and international standards.
With years of experience in international steel trading, we have established a stable global supply network. Our products are exported to Over 80 countries and regions, serving customers across North America, Europe, South America, Asia, Australia and other markets.
Every project has different material and specification requirements. We offer flexible customisation options covering product dimensions, grades, surface finishes, packaging, processing methods and other specific requirements.
We provide comprehensive support throughout the order process, from quotations and production follow-up to quality inspection, packaging and shipment coordination. Our experienced team ensures clear communication and reliable service for every international order.
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Find answers to frequently asked questions about our steel products, quality standards, export procedures, customisation services and global delivery solutions. Find out more about how Xinghan Group Co., Ltd. supports customers worldwide with a reliable supply of steel.
Xinghan Group Co., Ltd. specialises in supplying a wide range of steel products, including stainless steel plates, coils, pipes and rods; carbon steel plates, coils and pipes; galvanised steel products; PPGI coils; PPGL coils; aluminium products, copper products, roofing sheets and other bespoke steel solutions to meet a variety of industrial requirements.
Xinghan Group Co., Ltd. is a professional steel supplier based in China, working with reliable production facilities and processing partners to provide high-quality steel products at competitive prices, with a stable supply capacity and professional export services.
We maintain strict control over product quality at every stage, from the selection of raw materials through to production, processing, inspection and dispatch. Our steel products comply with international standards such as ASTM, AISI, DIN, EN and JIS to ensure reliable performance and consistent quality.
Yes. We provide bespoke solutions based on our customers’ specifications, including size, thickness, surface treatment, material grade, cutting, processing and packaging requirements. Our professional team helps customers find the most suitable steel solutions for their projects.