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Help CenterSteel Pipe & Tube ,Q195, Q235B, Q355B, 10#, 20#, 45#, ASTM A53, ASTM A106, API 5L, S235JR, S355JR
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Steel Pipe & Tube,Q195, Q235B, Q355B, 10#, 20#, 45#, ASTM A53, ASTM A106, API 5L, S235JR, S355JRNegotiableMOQ: 2 Metric Tons -
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Steel Pipe Product Detailed Description
1. Product Overview
Steel pipe is a hollow cylindrical long steel product, manufactured through professional processes such as hot rolling, cold drawing, and welding. It features hollow section, light dead weight, high structural strength, good pressure resistance and strong processability, which is a key basic material widely used in fluid transportation, construction engineering, machinery manufacturing, petrochemical, agricultural infrastructure and other industries. It can bear liquid/gas transportation and structural bearing demands, and can be customized in size, processing and surface treatment to meet different application scenarios.
2. Product Classification
2.1 By Production Process
1. Seamless Steel Pipe
Produced from solid steel billet through perforation, hot rolling, cold drawing or cold rolling, without welding seam on the pipe body. It features uniform wall thickness, high pressure resistance, good compactness and high mechanical strength, suitable for high-pressure fluid transportation and mechanical structural parts with high performance requirements.
2. Welded Steel Pipe
Formed by rolling steel strip/steel plate into cylindrical shape and welding longitudinally or spirally, with high production efficiency and stable size. It is divided into the following two categories according to welding process:
• ERW Steel Pipe (Electric Resistance Welded Pipe): High welding precision, smooth pipe body, suitable for general fluid transportation and construction structures.
• Spiral Welded Steel Pipe: Large diameter and thick wall thickness, strong bearing capacity, mainly used for large-scale fluid transportation and pile foundation engineering.
2.2 By Pipe Shape
1. Round Steel Pipe: Conventional cylindrical shape, uniform stress, good fluidity, the most widely used type.
2. Square Steel Pipe: Square cross-section, neat appearance, easy for connection and installation, widely used in construction structures and brackets.
3. Rectangular Steel Pipe: Rectangular cross-section, strong bending resistance, suitable for building frames, mechanical equipment shells.
2.3 By Surface Treatment
1. Black Steel Pipe: Without surface anti-corrosion treatment, in original rolling state, economical and practical, suitable for short-term use or internal structural parts.
2. Hot Dip Galvanized Steel Pipe: Coated with thick zinc layer on the surface through hot dip galvanizing process, with excellent anti-rust and anti-corrosion performance, long service life, suitable for outdoor and humid environments.
3. Painted/Anti-Rust Coated Steel Pipe: Sprayed with anti-rust paint or protective coating on the surface, enhancing corrosion resistance, low cost, suitable for general engineering and transportation.
4. Threaded Steel Pipe: Threaded processing at both ends of the pipe, convenient for threaded connection, widely used in plumbing, fire protection and pipeline systems.
3. Main Specification Parameters
1. Size Range
• Round pipe: Outer diameter 10mm-1220mm, wall thickness 1.5mm-50mm
• Square pipe: Side length 20mm-400mm, wall thickness 1.2mm-16mm
• Rectangular pipe: Side length 20mm30mm-300mm600mm, wall thickness 1.2mm-16mm
2. Length: Fixed length 3m, 6m, 9m, 12m, customized non-standard length available
3. Material Grades: Q195, Q235B, Q355B, 10#, 20#, 45#, ASTM A53, ASTM A106, API 5L, S235JR, S355JR
4. Execution Standards: GB/T 8162 (structural pipe), GB/T 8163 (fluid pipe), BS 1387, ASTM, JIS, EN international standards
5. Pressure Grade: Divided into low pressure, medium pressure and high pressure according to wall thickness and material, meeting different transportation and bearing demands
4. Product Performance Features
1. High Structural Strength: Dense steel structure, high tensile strength, yield strength and compressive resistance, not easy to deform or break under load.
2. Good Pressure Resistance: Seamless and thick-wall welded pipes have excellent pressure-bearing performance, safe and stable for fluid (water, oil, gas) transportation.
3. Excellent Processability: Easy to cut, bend, weld, thread and flange connect, adapting to various pipeline installation and structural processing.
4. Strong Corrosion Resistance: Galvanized and coated series have outstanding anti-rust, anti-aging and mild corrosion resistance, adapting to outdoor, humid and weak corrosive environments.
5. Stable Dimensional Accuracy: Neat pipe shape, uniform wall thickness, small tolerance, convenient for on-site construction and assembly.
6. Wide Adaptability: Can withstand certain high and low temperature environments, meeting the use requirements of different industries and regions.
5. Main Application Fields
1. Fluid Transportation: Water supply and drainage, gas transmission, oil transportation, chemical fluid delivery, agricultural irrigation pipelines.
2. Construction Engineering: Building structures, steel structure frames, curtain wall brackets, scaffolding, pile foundation engineering, corridor handrails.
3. Machinery Manufacturing: Mechanical equipment shells, instrument parts, automobile manufacturing, engineering machinery parts, processing brackets.
4. Petrochemical & Energy: Oil and gas transmission pipelines, chemical plant pipelines, power plant fluid pipelines, cable protection tubes.
5. Fire Fighting & Municipal Engineering: Fire fighting pipe network, municipal road pipelines, sewage treatment, landscaping irrigation.
6. Agriculture & Greenhouse: Greenhouse framework, agricultural breeding support, orchard irrigation pipelines.
7. Hardware & Decoration: Guardrails, shelves, furniture frames, door and window accessories, decorative pipe fittings.
6. Packaging & Transportation
1. Packaging Method: Bundled with steel strips, protected by plastic caps at both ends to prevent damage; small size pipes can be packed with woven bags or pallets, covered with waterproof cloth to avoid moisture and collision.
2. Product Marking: Each bundle is attached with a label, marking product specification, material, standard, length, manufacturer and other information for inspection.
3. Transportation & Storage: Suitable for road, railway and sea transportation; store in dry and ventilated warehouse, avoid open-air stacking and rain immersion, keep away from strong corrosive substances.
7. Precautions
1. Select appropriate pipe type (seamless/welded), wall thickness and surface treatment according to use pressure, environment and medium.
2. Handle with care during transportation and installation to avoid collision causing pipe deformation or damage.
3. For welded pipes, check the welding seam quality before use to ensure no cracks, leaks and other defects.
4. After cutting and processing, carry out anti-rust treatment on the pipe end section to extend service life.
5. Regularly check and maintain the pipeline system in long-term use to ensure safe and stable operation.
8. After-Sales Service
1. Support product quality and specification acceptance, provide return and exchange service for unqualified products or inconsistent specifications.
2. Provide professional technical consultation including model selection, size matching, installation and construction guidance.
3. Customize processing services such as fixed-length cutting, threading and bending according to customer needs.
4. Ensure stable product quality and on-time delivery, support large-volume bulk procurement and long-term cooperative supply.
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