Round ERW Steel Pipe Large Diameter 24 Inch Welded Tube
Basic Product Identification
Official Product Name | Round ERW Steel Pipe Large Diameter 24 Inch Welded Tube |
Product Category | Electric Resistance Welded (ERW) Carbon Steel Pipe |
Place of Origin | Tianjin, China |
Brand Name | Customizable / OEM Supported |
Minimum Order Quantity | 5 Metric Tons |
Delivery Lead Time | Within 15 days after receiving advance payment |
Payment Terms | T/T, L/C, D/P, D/A, Negotiable |
Supply Capacity | 2000 Metric Tons Per Month |
Dimensions
Nominal Diameter | 24 Inch (DN600) |
Outer Diameter | 609.6mm / 24 Inch |
Wall Thickness Range | 5.0 mm-22.0mm |
Standard Available Length | 6m (20ft), 12m (40ft) |
Customized Length | 5.8m, 11.8m, up to 24m |
Section Shape | 100% Round |
Dimensional Tolerance | OD ±1%, WT ±10%, Length ±5mm |
International Compliance Standards
API Standards | API 5L, API 5CT |
ASTM Standards | ASTM A53 Gr.A / Gr. B, ASTM A252, ASTM A500, ASTM A135 |
European Standards | EN 10224, EN 10219, EN 10217, BS 1387, BS 1139 |
Chinese National Standards | GB/T 3091, GB/T 9711, GB/T 13793 |
Australian Standard | AS 1163 |
Certifications | ISO 9001, CE, BSI, SGS Third-Party Testing Approved |
Steel Grades
Available Steel Grades | Mechanical Property Data |
Q195, Q215, Q235B, Q345B | Tensile Strength 370MPa - 600MPa, Yield Strength ≥235MPa |
S235JR, S275JR, S355JR | Tensile Strength 360MPa - 510MPa, Yield Strength ≥235MPa |
L235, L245, L355, X42-X70 | Tensile Strength 415MPa - 570MPa, Yield Strength ≥245MPa |
GR.A, GR. B, J55, P195 - P460 | Matched to corresponding API and ASTM standard requirements |
Pipe End Processing
Plain Square Cut | Clean 90° cut, no burrs |
30° Beveled End | For on-site welding construction |
Roll Grooved End | Comply with ISO 6182-12 for fire protection systems |
Threaded End | BSPT (ISO 7-1) / NPT (ANSI B1.20.1) with coupling |
End Protection | Plastic pipe cap, iron protector, steel ring welded on OD |
Surface Treatment
Black Varnish / Black Paint | Anti-rust for short-term outdoor storage |
Hot Dip Galvanized | Zinc coating 100-500g/㎡ for corrosion resistance |
Anti-Rust Oil | Bare pipe with oil layer for mechanical processing |
Fusion Bonded Epoxy (FBE) | Buried water and sewage pipeline anti-corrosion |
3PE / Polyester Resin Coating | Long-distance oil and gas transmission pipeline |
Red Paint | Special for fire fighting pipeline marking |
Production Process & Quality Control
Core Production Process | Quality Control Steps |
Raw Material Uncoiling & Inspection | Full chemical composition spectrum analysis for steel coil |
Cold Forming | Computer controlled closed-loop sizing to ensure roundness |
High Frequency Electric Resistance Welding | No untempered martensite left after seam heat treatment |
Inner & Outer Weld Flash Removal | Smooth weld surface without protrusions |
Flying Saw Precision Cutting | Length error controlled within ±5mm |
Hydrostatic Testing | Test pressure up to 2.5MPa according to standard |
Eddy Current / Ultrasonic Test | 100% non-destructive inspection for weld seam |
Final Dimension & Appearance Check | Before packaging and delivery |
Application
Main Application Industries | Detailed Usage |
Oil & Gas Transmission | Onshore low and medium pressure oil, natural gas gathering lines |
Water & Aqueous Liquid Conveyance | Municipal water supply, cold and hot water lines, sewage pipelines |
Fire Protection System | Large diameter fire fighting main pipeline for industrial plants |
Structural Engineering | Steel structure building piling, bridge foundation support |
HVAC System | Large caliber heating and cooling circulating pipeline |
Construction & Scaffolding | Heavy duty scaffolding pipe for high-rise building projects |
Agricultural Facilities | Large greenhouse main frame, farm irrigation main pipe |
Packaging & Shipping
Regular Packaging | Bundled with 5-7 high strength steel strips |
Anti-Corrosion Packaging | Wrapped with waterproof PVC plastic film |
Container Loading | Smaller pipes can be inserted into 24 inch pipe to save space |
Shipment Port | Tianjin Xingang Port, China |
Transport Mode | 20ft / 40ft Container, Bulk Carrier for large quantity |
Competitive Advantages
Competitive Advantages | Value for Buyers |
Cost Effective | 15% lower price than submerged arc welded longitudinal steel pipe |
High Dimensional Accuracy | Uniform wall thickness, minimal eccentricity, excellent roundness |
High Production Efficiency | 60-240 pieces per hour, fast delivery for bulk orders |
Strict Weld Quality | Heat treated weld seam eliminates hidden corrosion risks |
Full Customization Support | Special wall thickness, length, coating can be produced on demand |
Free Sample Available | 500mm length free sample for customer quality inspection |
