Product Overview
API 5L Gr.B is the most trusted carbon steel line pipe for oil, gas and water transport, setting the benchmark for balanced performance and affordability. As a core grade under API 5L (American Petroleum Institute), it delivers minimum 245 MPa yield strength, excellent weldability and consistent quality-ideal for medium-pressure, ambient-temperature projects worldwide. At Jiangsu Cunrui Metal Products Co., Ltd., we supply API 5L Gr.B in both seamless and welded forms, strictly following PSL1/PSL2 standards to match your exact project demands.
Chemical Composition&Mechanical Properties
Chemical Composition
| Element | C | Mn | P | S | Si |
|---|---|---|---|---|---|
| Content | ≤0.30 | 0.29–1.06 | ≤0.030 | ≤0.030 | ≥0.10 |
Mechanical Properties
| Property | Value | Unit |
|---|---|---|
| Yield Strength | ≥ 245 | MPa |
| Tensile Strength | 415–655 | MPa |
| Elongation | Meet API standard elongation requirements | % |
| Hardness | Controlled within standard range for easy processing | HRC |
Core Advantages
- Excellent weldability, convenient for on-site installation and pipeline connection.
- Good ductility and impact resistance, suitable for regular ambient temperature working conditions.
- Uniform material structure, stable pressure-bearing capacity for long-term service.
- Cost-effective with outstanding comprehensive performance, ideal for large-scale pipeline engineering.
About Jiangsu Cunrui Metal Products Co., Ltd.
Located in Wuxi, Jiangsu, our factory is a professional steel pipe manufacturer and exporter with decades of production experience. We own complete production lines, precision testing equipment and strict quality management systems, certified by ISO 9001, CE and other authoritative certificates. Every product undergoes full dimensional, chemical and mechanical inspection before delivery. Our professional QC and R&D teams strictly control every production link, ensuring all products including API 5L Gr.B reach international quality standards. We have built long-term cooperative relationships with clients from North America, Southeast Asia, the Middle East and other regions.
| Parameter | Details |
|---|---|
| Standard | API 5L (PSL1 / PSL2) |
| Grade / Material | Gr.B (Carbon Steel) |
| Product Form | Seamless / Welded Round Pipe |
| Outer Diameter Range | 1/2" – 80" (21.3mm – 2032mm) |
| Wall Thickness Range | Sch 10, Sch 20, Sch 40, Sch 80, Sch 160, XXS, and custom (up to ~100 mm) |
| Length | Standard 3 / 6 / 9 / 12 m; cut-to-length available |
| Delivery Condition | As-rolled / Normalized / Stress-relieved |
| Surface Finish | Black painted, Varnished, Galvanized, Anti-corrosion coated, Bare |
| Certification | EN 10204 3.1 Material Certificate · PMI Inspection and Verification · SGS/BV/TÜV Optional |
Key Applications of API 5L Gr.B
API 5L Gr.B's versatility makes it the go-to choice across industries, with API 5L Gr.B proving its value in thousands of projects:
- Oil & Gas: Onshore gathering lines, distribution networks, station piping and water injection lines-perfect for moderate-pressure hydrocarbon transport.
- Water & Utilities: Municipal water supply, irrigation systems and industrial water pipelines, balancing strength and cost-effectiveness.
- Construction & Structure: Bridge supports, building columns, scaffolding and foundation piling, leveraging its high strength-to-weight ratio.
- Petrochemical & Power: Process piping, cooling water systems and low-pressure fluid transfer in plants.
- Emerging Sectors: Hydrogen energy pipelines and wastewater treatment facilities, meeting modern infrastructure needs.
Our Business Scope
We specialize in supplying a full range of steel products, with API 5L Gr.B as one of our flagship offerings:
- Carbon Steel: API 5L Gr.B, Q235, Q345, 50CrVA, 30Mn2 (pipes, coils, wires, sheets)Jiangsu Cunrui Metal Products Co., Ltd..
- Stainless Steel: 201, 304, 316L, 310S, 321, 2205, 904L (rods, coils, sheets, pipes)Jiangsu Cunrui Metal Products Co., Ltd..
- Services: Custom cutting, machining, surface treatment (galvanization, coating), third-party inspection and flexible OEM/ODM solutionsJiangsu Cunrui Metal Products Co., Ltd..
- Logistics: Sea/air/rail transport, partnering with Maersk, COSCO, DHL and FedEx for on-time deliveryJiangsu Cunrui Metal Products Co., Ltd.
FAQs
Q1: What's the difference between PSL1 and PSL2 for API 5L Gr.B?
A1: PSL2 has stricter chemical limits (lower S/P), more mechanical tests (e.g., low-temperature impact), full NDT and traceability-for critical projects; PSL1 fits general, moderate-pressure use.
Q2: What sizes do you offer for API 5L Gr.B pipes?
A2: OD from 0.405" to 80" (NPS 1/8–80), wall thickness SCH 5S–XXS, lengths 5–7m (single random) or 11–13m (double random); custom sizes available.
Q3: How do you guarantee quality?
A3: We use premium raw materials, monitor every production step, perform 100% dimensional/mechanical/chemical checks, and provide MTC, PMI and third-party reports (e.g., SGS, BV)Jiangsu Cunrui Metal Products Co., Ltd..
Q4: What's your MOQ and delivery time?
A4: MOQ is 1 ton; 7–15 days for standard sizes, 15–30 days for custom orders, depending on quantity and specsJiangsu Cunrui Metal Products Co., Ltd..
Q5: Why choose Cunrui for API 5L Gr.B?
A5: Direct factory pricing, 19+ years of expertise, strict quality control, flexible customization and global logistics support-we deliver reliable API 5L Gr.B with competitive cost and full after-sales serviceJiangsu Cunrui Metal Products Co., Ltd.
