Complaint
Carbon steel pipes are made of steel ingots or solid round steels through perforation into capillary tubes, which are then hot-rolled, cold-rolled or cold-drawn. Carbon steel pipe plays an important role in my country's steel pipe industry.
Carbon steel pipes are divided into two categories: hot-rolled and cold-rolled (drawn) steel pipes.
Hot-rolled carbon steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
In addition to general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, cold-rolled (pulled) carbon steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, non- Rust thin-walled steel pipe, special-shaped steel pipe. The outer diameter of hot-rolled seamless pipes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless pipes can reach 6mm and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipes can reach 5mm and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.
General carbon steel pipe: It is made of 10, 20, 30, 35, 45 and other high-quality carbon steel 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot-rolled or cold-rolled. Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transportation pipelines. 45, 40Cr and other medium carbon steel seamless pipes are used to manufacture mechanical parts, such as the stressed parts of automobiles and tractors. Generally, carbon steel pipes are used to ensure the strength and flattening test. Hot-rolled steel pipes are delivered in hot-rolled or heat-treated state; cold-rolled steel pipes are delivered in heat-treated state.
| Size (Outer Diameter) | Wall Thickness | Length |
| 21MM ( 1/2") | 1.4MM --2.75MM | 6M (or Customized) |
| 26MM (3/4") | 1.4MM --2.75MM | 6M (or Customized) |
| 33.4MM (1") | 1.4MM -- 3.5 MM | 6M (or Customized) |
| 42.2MM(1 1/4") | 1.4MM -- 3.5 MM | 6M (or Customized) |
| 48.3MM (1 1/2") | 1.5MM -- 4.0 MM | 6M (or Customized) |
| 60.3MM (2") | 1.5MM -- 4.0 MM | 6M (or Customized) |
| 73MM (2 1/2") - ASTM STANDARD | 1.8MM -- 5.5 MM | 6M (or Customized) |
| 76MM (2 1/2") -- BS STANDARD | 1.8MM -- 5.5 MM | 6M (or Customized) |
| 88.9MM (3") | 2.0MM -- 5.5 MM | 6M (or Customized) |
| 114.3MM (4") | 2.0MM -- 6.5 MM | 6M (or Customized) |
| 141.3MM (5") | 2.5MM -- 6.5 MM | 6M (or Customized) |
| 165MM(6") - BS STANDARD | 2.5MM -- 7.5 MM | 6M (or Customized) |
| 168.3 MM (6") - ASTM STANDARD | 2.5MM -- 7.5 MM | 6M (or Customized) |
| 219.1MM (8") | 2.5MM -- 9.0 MM | 6M (or Customized) |
Porduct Name | Seamless carbon steel pipe |
Outer Diameter | 10--300mm,according to customer requirements |
Thickness | 4--100mm,according to customer requirements |
Length | 1--12M ,according to customer requirements |
Standard | ASTM |
Type | Round |
Surface Treatment | Bare, Black Painted, Varnish Coating, galvanized etc. |
Marking | Standard Marking, or according to customer's requirements. Marking Method: Automatic Spray of White Paint. |
Material | API 5L/ASTM A106/ASTM A53 GR.B |
Application | Petrochemical industy;avation and aerospace industry;pharmaceutical industry;gas exhaust; power plant; ship buliding;water treament,etc. |
Advantages | 1, Quick Respond 2, Reasonable Price 3, Abundant stock and prompt delivery 4, Flexible payment terms 5, Rich experiences in manufacturing and exporting |
| Stainless steel sheet /plate |
| Stainless steel coil |
| Stainless steel pipe/tube |
| Stainless steel square/angle bar |
| Galvanized steel sheet/plate |
| Galvanized steel coil |
| Galvanized steel pipe/tube |
We have multiple quality system certifications to ensure that high-quality products reach your hands.
1. What is your payment terms?
Zhongheng Steel prefers 30%TT before inspection and the rest 70% against BL. However, our price term is negotiable. Multiple payment terms are available from us.
2. Which payment method can I choose?
Zhongheng Steel accepts all types of secured payment methods. Bank transaction, Alibaba Trading Assurance, Paypal and etc are all available from us. Please feel free to contact us about your preferred payment method.
3. Is sample providing service available?
Zhongheng Steel provides free samples to our clients. We usually also cover the sample shipping cost. Please feel free to order a sample from us.
4. Is customization available?
Zhongheng Steel's expert equipment and highly-trained workers are capable of manufacturing highly customized products. Please feel free to discuss with us about your customized requirements, we can surely meet your needs.
5. What products and materials do you supply?
Zhongheng Steel mainly supplies all catalogs and all grades of steel and stainless steel products. Coils, strips, sheet, pipes, bars, beams, flanges and other customized products. Tin coating, Ti coating, galvanization and other surface treatments are also available.
Other than steel products,Zhongheng Steel also has high production capacity and holds large ready stock of all kinds of copper and aluminum products.
Please feel free to consult us about any related products above, we can surely meet your requirements.
6. Why should I choose you?
Zhongheng Steel Industry company has deeply engaged in metal material market for over 15 years. We established perfect reputation world-widely. Craftsmanship spirit is the fundamental of Zhongheng Steel since we are established. Zhongheng Steel keeps our products as highest quality and lowest price to maintain our self competitive. Proving our clients with best trading experience is the goal we always insist of.
7. How can I make sure you are a reliable supplier?
Zhongheng Steel is willing to provide our copies of company registration certificate, Alibaba registration and Chinese exporting registration for you to view. These certificates are under Chinese Trading Law effect. They can help you officially check our company's capability and status.
On the products' side, certificates as Mill Test Certificate(MTC), Third Party Material Quality Conformity Certificate and other required certificates are available before the order. Samples are also available from us for you to test in your own testing facility. Zhongheng Steel also supports third-party inspection before shipping. Zhongheng Steel also welcomes a company tour for you to check our factory status.
