High Quality JCOE Iron Steel Round Black Steel Pipe for Fluid Transportation
As a globally recognized leader in industrial steel pipe manufacturing with 20+ years of expertise, YTDR Group specializes in engineering and supplying Large Diameter Thick Walled JCOE Carbon Steel Round Black Steel Pipe—a flagship product designed to address the most demanding challenges of critical infrastructure, energy, and construction projects worldwide. Our pipes are not just components; they are mission-critical solutions built on advanced JCOE forming technology, premium carbon steel alloys, and a zero-compromise quality management system that aligns with the strictest international standards. Catering exclusively to B2B clients—including EPC contractors, oil & gas operators, municipal engineering firms, and heavy industry manufacturers—YTDR delivers reliability, durability, and tailored value that sets us apart from competitors.
Core Parameters (Precision Engineered for Performance)
Material & Grade: Scientifically Selected for Durability
Base material: High-purity carbon steel (ASTM A53 Gr.B, API 5L Gr.B/X52/X60, EN 10219 S235JR/S275JR, DIN 17175 St37-2)
Chemical composition control:
● Carbon (C ≤ 0.25%): Balances strength and weldability to avoid brittleness in high-pressure environments
● Manganese (Mn 1.20–1.60%): Enhances tensile strength and impact resistance
● Sulfur (S ≤ 0.05%) & Phosphorus (P ≤ 0.045%): Minimizes impurities that cause cracking during welding or stress
Mechanical properties (tested per API 5L requirements):
● Tensile strength: ≥415MPa (Gr.B) / ≥520MPa (X52)
● Yield strength: ≥240MPa (Gr.B) / ≥355MPa (X52)
● Elongation: ≥22% (ensures ductility under extreme loads)
Dimensional accuracy:
● OD tolerance: ±0.5% of nominal size (exceeds ASTM A53’s ±1% standard)
● WT tolerance: ±3% (ensures uniform pressure distribution)
Straightness: ≤1.5mm/m (prevents installation issues in long pipeline runs)
Core Advantages (YTDR Group’s Competitive Edge)
2.1 Performance Benefits for Fluid Systems (Data-Backed)
● High pressure resistance: Working pressure up to 40MPa (6,000 psi) – suitable for high-pressure oil/gas transmission and industrial fluid pipelines (e.g., hydraulic systems)
● Corrosion resistance: Black oxide coating + anti-rust oil passes 500-hour neutral salt spray test (ASTM B117) – 20% higher resistance than standard fluid pipes; optional 3PE anti-corrosion coating for underground/submarine fluid lines
● Leak-proof design: JCOE forming ensures seamless weld seams (ultrasonic tested 100%) and tight dimensional tolerance – eliminates joint leakage (the #1 failure point in fluid systems)
● Smooth fluid flow: Internal surface roughness ≤50μm (Ra) – reduces pressure drop and energy consumption for fluid pumping systems
2.2 Compliance & Quality Assurance (Fluid System Safety)
●In-house testing lab (CNAS-accredited): Equipped with pressure testing machines, corrosion test chambers, and flow resistance analyzers – 100% of raw materials and finished pipes undergo performance validation
●Third-party inspection: SGS/BV/Lloyd’s Register inspection available for fluid system certification (e.g., potable water, hazardous fluid transport)
●Quality control system: Aligned with API Q1 and ISO 13485 (for hygienic fluid applications) – 8-stage inspection process (raw material → forming → welding → hydro test → coating → dimension check → packaging → delivery)
2.3 End-to-End Customization: Tailored to Project Needs
● Size customization: Non-standard OD/WT/length (MOQ: 3 tons for custom sizes; 1 ton for samples) – tailored to fluid flow rate and pressure requirements
● Surface treatment options:
● 3PE anti-corrosion coating (underground fluid pipes): 200μm epoxy primer + 170μm adhesive + 3.0mm polyethylene topcoat (30-year service life)
● Epoxy resin lining (potable water/chemical fluid pipes): Food-grade epoxy (FDA-compliant) for zero contamination
● Galvanized coating (outdoor fluid pipes): Hot-dip galvanizing (Zn thickness ≥85μm) for enhanced corrosion protection
● Connection customization (fluid-tight joints):
● Flange welding: ANSI B16.5 (Class 150/300) with gasket compatibility for fluid type (e.g., EPDM for water, Viton for oil)
● Threaded ends: NPT/BSPT (API 5B) with thread sealant pre-applied
● Grooved ends: Victaulic-style grooved connections for quick assembly in emergency fluid systems
● Packaging customization: Seaworthy wooden crates/pallets with waterproof wrapping – protects pipes from moisture during transportation (critical for fluid pipe integrity)
JCOE forming: Precision cold-bending of steel plates into "J-C-O-E" profiles, followed by double-sided submerged arc welding (SAW) – weld seam strength ≥ parent material, eliminating weak points for fluid leakage
Post-processing:
● Normalizing heat treatment (900–950°C): Eliminates internal stress from forming to prevent cracking under cyclic fluid pressure
● Hydrostatic testing: 100% of pipes tested at 1.5× working pressure (e.g., 60MPa test pressure for 40MPa operating pressure) for 30 seconds – no visible leakage or deformation
● Shot blasting (Sa 2.5 grade): Removes scale and impurities to ensure uniform coating adhesion and fluid flow smoothness
International Standards Compliance: Global Market Access Guaranteed
● Primary certifications: API 5L Monogram (License No. API-5L-0715), CE (PED 2014/68/EU, Module B+D), ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management)
● Secondary compliance: ASTM A53, EN 10219, DIN 2448, GOST 10704 (Russian standard), AS/NZS 1163 (Australian standard)
● Traceability: Each pipe is marked with heat number, grade, standard, size, and YTDR logo for full batch tracking (per API 5L requirements)
Oil & Gas Fluid Transportation
● Use cases: Crude oil transmission pipelines, natural gas distribution lines, refinery process fluid pipes, offshore platform fluid transfer systems
● YTDR track record: Supplied 15,000 tons of API 5L JCOE fluid pipes for a cross-border natural gas pipeline project in the Middle East – zero leakage reported over 5 years of operation
● Client benefit: High pressure resistance (30MPa operating pressure) and corrosion protection for desert/humid coastal environments
Municipal Water & Sewage Transportation
● Use cases: Potable water supply pipelines, sewage treatment plant transfer pipes, rainwater drainage systems, fire protection water lines
● YTDR track record: 8,000 tons of ASTM A53 JCOE black steel pipes installed in a European municipal water network – WRAS-certified and compliant with EU drinking water regulations
● Client benefit: Leak-proof design reduces water loss by 15% compared to traditional pipes
Industrial Fluid Transportation
● Use cases: Chemical plant fluid transfer (acids, solvents, fuels), power plant cooling water pipes, food/beverage processing fluid lines (FDA-compliant options)
● YTDR track record: 4,000 tons of custom JCOE fluid pipes for a chemical plant in Southeast Asia – epoxy-lined to resist acidic fluid corrosion
● Client benefit: Custom surface treatment ensures compatibility with aggressive industrial fluids
Agricultural Fluid Transportation
● Use cases: Irrigation water pipelines, fertilizer fluid transfer systems, livestock drinking water lines
● YTDR track record: 3,000 tons of JCOE black steel pipes for a large-scale irrigation project in Australia – corrosion-resistant for rural outdoor environments
● Client benefit: Cost-effective and durable solution for low-pressure agricultural fluid systems
● Supply Chain Strength: Scalable, Reliable, and Fast
● After-Sales Support: Beyond Delivery
● Client-Centric Partnerships: Long-Term Value
Yuantai Derun Square Steel Pipes – Quality Assured at Every Stage
From raw material sourcing to finished products, Yuantai Derun implements rigorous quality control at every step. We exclusively use traceable raw materials from reputable manufacturers, subjecting them to comprehensive inspections, including but not limited to:
●Dimensional & Visual Checks (appearance, size, straightness)
●Mechanical Testing (impact resistance, yield & tensile strength, hardness)
●Material Analysis (chemical composition, metallographic examination)
●Non-Destructive & Corrosion Testing (UT inspection, salt spray testing)
Contact us today to discuss your specific testing requirements—we ensure precision and reliability in every pipe.


Contact us today to discuss your specific testing requirements—we ensure precision and reliability in every pipe.
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Product Description |
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Outer Diameter |
219mm to 4500mm |
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Wall Thickness |
4-30 mm |
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Length |
4-24M according to client requirement |
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Tolerance |
±5% or as required |
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Brand |
Yuantai Derun Steel Pipe Manufacturing Group |
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Model |
3PP coating steel pipe |
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Surface Treatment |
Black painted or REQUEST |
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Standards |
API 5L, ASTM A501/500, bs,EN10210/10219,JIS G3466 |
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Certificate |
CE,LEED,BV,PHD&EPD,BC1,EN10210/10219, ISO9000/14001/45001,DNV,ABS,JIS G3466 |
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Brand |
Yuantai Derun or OEM |
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MOQ |
2-5 Tons or No minimum order |
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Delivery Time |
7-30 days |
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Samples |
Free Samples Get Free Sample Now! |

+86 18526786715
18526786715



