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Steel Pipe & Tube & Carbon Steel Pipe,Q235 Q355 10# 20# 45#NegotiableMOQ: 5 Metric Tons -
Steel Pipe & Tube & Carbon Steel Pipe,Q235 Q355 10# 20# 45#NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & Alloy Steel Pipe,GB/T 3087、GB/T 5310、GB/T 6479、GB/T 9948、ASTM A213、ASTM A335、ASME SA213、SA335NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & Alloy Steel Pipe,GB/T 3087、GB/T 5310、GB/T 6479、GB/T 9948、ASTM A213、ASTM A335、ASME SA213、SA335NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & Alloy Steel Pipe,GB/T 3087、GB/T 5310、GB/T 6479、GB/T 9948、ASTM A213、ASTM A335、ASME SA213、SA335NegotiableMOQ: 5 Metric Tons
I. Product Overview
Carbon steel pipes are hollow tubular steel products processed from high-quality carbon structural steel through cold drawing, hot rolling, welding and other processes. They are one of the most widely used pipes in the industrial field. Its core characteristics are uniform material, high strength, good toughness, excellent corrosion resistance, and moderate production cost. It can be processed into products of different specifications, wall thicknesses and lengths according to different working conditions. It is widely used in fluid transportation, structural support, machinery manufacturing and many other industries, and is the core basic pipe connecting industrial production and infrastructure construction.
This series of carbon steel pipes are produced in strict accordance with national and industry standards, with stable and reliable quality. They can meet the long-term use needs of ordinary working conditions and medium and low pressure working conditions. At the same time, they support customization of specifications, surface treatment and processing technology according to customers' specific requirements, adapting to diverse application scenarios.
II. Core Product Parameters
Parameter Name |
Specification Range |
Description |
Nominal Diameter |
DN15-DN2000 |
Special calibers can be customized according to needs, covering the full range of small and large calibers |
Wall Thickness |
1.5mm-60mm |
Thin-walled pipes are suitable for fluid transportation, and thick-walled pipes are suitable for high-pressure and structural support scenarios |
Length |
6m/12m (standard), customizable |
Supports fixed-length cutting to meet on-site engineering installation needs |
Implementation Standard |
GB/T 3091-2015, GB/T 8163-2018, ASTM A53, API 5L, etc. |
Complete national and American standards, selectable according to export and engineering requirements |
Surface Treatment |
Black pipe, galvanized, painted, anti-corrosion coating |
Improve corrosion resistance, adapt to different environments (humid, outdoor, corrosive media) |
Connection Method |
Welding, thread, flange connection |
Selected according to installation scenarios, convenient, efficient and firm connection |
III. Material and Core Performance
(I) Common Materials and Grades
This product adopts high-quality carbon structural steel, and the core grades are divided into the following categories to adapt to different working conditions:
Q235 Series: Low carbon steel with moderate strength, good plasticity and toughness, easy to process and weld. It is mainly used for general structural parts and low-pressure fluid transportation (such as water supply and drainage, ordinary gas transportation). It has high cost performance and is the most widely used material.
Q355 Series: Medium carbon steel with higher strength than Q235 and strong bearing capacity. It is suitable for medium and low pressure fluid transportation, mechanical structures, building supports and other scenarios that have certain requirements on strength.
10#, 20# Steel: High-quality low carbon steel with high purity, uniform material and excellent toughness. It is mainly used for high-precision fluid transportation (such as petroleum, chemical industry, gas), can bear a certain pressure, and has excellent welding performance.
45# Steel: Medium and high carbon steel with high strength and hardness. It is suitable for mechanical manufacturing and parts processing, and needs to be quenched and tempered to improve comprehensive mechanical properties.
ASTM A53, API 5L: American standard materials, suitable for export and international projects. Corrosion resistance and pressure resistance meet international standards, and they are used in high-end fluid transportation scenarios such as petroleum and natural gas.
(II) Core Performance Indicators
Mechanical Performance: Tensile strength ≥ 375MPa, yield strength ≥ 235MPa, elongation ≥ 25%. It can bear a certain impact load, is not easy to break, and is suitable for long-term use.
Corrosion Resistance: The original black pipe has basic corrosion resistance. After galvanizing, painting, anti-corrosion coating treatment, it can effectively resist moisture, acid and alkali, atmospheric corrosion and extend service life.
Processing Performance: Easy to cold draw, hot roll and weld. It can be processed by threading, beveling, bending, etc. according to needs, adapting to different installation scenarios, with high processing precision and small dimensional deviation.
Sealing Performance: Hollow structure with uniform wall thickness, excellent sealing performance after connection, not easy to leak, suitable for transportation of various fluids (water, oil, gas).
IV. Production Process
This series of carbon steel pipes adopt mature production processes, strictly control each process to ensure stable product quality. The specific processes are as follows:
Raw Material Screening: Select high-quality carbon structural steel billets that meet the standards, conduct component testing to ensure that the material meets the standards, and eliminate impurities, cracks and other defects.
Heating Treatment: Send the steel billet into the heating furnace, control the temperature at 1000-1200℃ to make it reach a plastic state, preparing for subsequent processing.
Forming Processing: Select the corresponding process according to the product type - seamless pipes adopt cold drawing or hot rolling process, forming hollow tubes through mold stretching and rolling; welded pipes adopt electric resistance welding (ERW) or spiral submerged arc welding (SSAW), roll the steel plate into tubes and then weld them into shape. The welding joints are tested by flaw detection to ensure no slag inclusion or air holes.
Cooling Treatment: Send the formed steel pipe into the cooling pool, adopt natural cooling or forced cooling, control the cooling speed to avoid pipe deformation and cracking.
Finishing Processing: Straighten, cut, thread, bevel and other treatments on the cooled steel pipe to ensure that the dimensional accuracy and surface flatness meet the standards.
Surface Treatment: According to customer needs, perform black pipe rust prevention, galvanizing, painting, anti-corrosion coating and other treatments to improve corrosion resistance.
Quality Inspection: Conduct appearance inspection, dimensional inspection, mechanical performance inspection and flaw detection on the finished steel pipes. Unqualified products are all eliminated to ensure that 100% of the delivered products meet the standards.
V. Application Scenarios
With its excellent comprehensive performance, carbon steel pipes are widely used in many industries. The specific scenarios are as follows:
1. Fluid Transportation Field
Suitable for the transportation of various fluids such as water, petroleum, natural gas, coal gas, steam, chemical media, such as urban water supply and drainage pipes, petroleum transportation pipelines, chemical workshop fluid pipes, gas transportation pipes, etc. According to the medium pressure and corrosion, select products with corresponding wall thickness, material and surface treatment.
2. Structural Support Field
Used for supporting components of construction, bridges and steel structure projects, such as scaffolding, steel structure columns, bridge supports, etc. Q355 material and thick-walled steel pipes can provide sufficient bearing capacity to ensure structural stability.
3. Machinery Manufacturing Field
As the raw material of mechanical parts, it is used for processing machine tools, construction machinery, auto parts, etc., such as bushings, brackets, pipe joints, etc. 10#, 20#, 45# materials can meet different precision and strength requirements.
4. Other Fields
Including agricultural irrigation pipes, mine transportation pipes, municipal engineering pipes, shipbuilding pipes, etc. According to specific working conditions, products with special specifications and processes can be customized to adapt to diverse needs.
VI. Product Advantages
Reliable Quality: Produced in strict accordance with national and industry standards, each process is professionally inspected, with uniform material, accurate size, no obvious defects, and can be used stably for a long time.
High Cost Performance: Moderate material cost and mature production process. Compared with stainless steel pipes and alloy pipes, it has more advantages in price, and can meet the needs of most working conditions with strong practicality.
Wide Adaptability: Specifications, materials, surface treatment and length can be customized, which can adapt to various scenarios such as low pressure, medium pressure, structural support and fluid transportation, with strong versatility.
Easy Processing and Installation: Convenient welding, cutting, threading and other processing, diverse connection methods, which can quickly adapt to on-site engineering installation and improve construction efficiency.
Long Service Life: The original material is corrosion-resistant and impact-resistant. After surface treatment, it can effectively resist erosion of harsh environments, extend service life and reduce later maintenance costs.
VII. Notes
Storage: It should be stored in a dry, ventilated and cool warehouse to avoid moisture, rain and exposure to prevent pipe rust; when stacking, it should be placed separately to avoid extrusion and collision to prevent deformation.
Installation: Before installation, check whether the pipe surface is damaged or rusted. Ensure that the interface is tightly sealed during connection to avoid leakage; select suitable welding materials during welding and control the welding temperature to prevent welding defects.
Use: According to the medium type and pressure, select steel pipes of corresponding specifications and materials to avoid overpressure and overtemperature use; regularly inspect and maintain the pipeline, and timely handle rust, leakage and other problems.
Transportation: Do a good job in protection during transportation to avoid pipe collision and scratch. It can be wrapped with packaging film and woven bags to prevent rust and damage during transportation.
VIII. After-Sales Service
1. Product Quality Assurance: All products meet national and industry standards and provide quality inspection reports.
2. Customization Service: Support customization of specifications, materials, surface treatment, length, etc., and provide professional customization schemes according to customer needs to ensure that the products adapt to actual working conditions.
3. Technical Support: Provide technical consulting services such as product selection, installation guidance, use and maintenance, and answer customers' questions in the process of product use.
4. After-Sales Response: Respond within 24 hours after receiving customer feedback, timely handle customer demands and ensure normal use of customers.
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