JIS G3465 Large-Diameter Seamless Steel Pipe Oil Drilling Pipe For Drilling
JIS G3465 Large-Diameter Seamless Steel Pipe — Oil Drilling Pipe
1. Material Description
The JIS G3465 Large-Diameter Seamless Steel Pipe is a high-quality drilling pipe manufactured in accordance with the Japanese Industrial Standard JIS G 3465:2019, specifically designed for applications such as oil and gas exploration, geothermal wells, test drilling, and mineral boreholes. This is a seamless steel pipe, meaning it is manufactured without welded seams, ensuring superior mechanical strength, pressure resistance, and reliable performance in demanding drilling environments.
2. Specifications
| Parameter | Typical Range/Value |
|---|---|
| Standard | JIS G 3465:2019 – Seamless Steel Pipe for Drilling |
| Outside Diameter (OD) | 30 mm – 180 mm (varies by application) |
| Wall Thickness | 3 mm – 20 mm (typical drilling pipe wall thickness) |
| Length | Custom (typically 6–12 meters) |
| Manufacturing Process | Seamless (hot-rolled or cold-drawn) |
| Surface Finish | Oiled or as requested |
3. Key Features
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High Strength and Durability: Engineered to withstand the mechanical stresses encountered during drilling operations.
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Excellent Pressure and Temperature Resistance: Suitable for deep drilling, where pipes face extreme downhole conditions.
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Corrosion and Abrasion Resistance: Resists corrosion and wear from drilling fluids and abrasive formations.
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Seamless Construction: Eliminates weak longitudinal welds, enhancing pipe integrity and fatigue life.
4. Our Advantages
We understand the key concerns in the drilling industry — reliability, durability, and material traceability. Here's how this product addresses them:
Consistent Quality and Traceability
Our seamless steel pipes are manufactured to the strict JIS G3465 standards, ensuring consistent chemical composition, mechanical properties, and dimensional tolerances for reliable performance in the field.
High Load and Cycle Resistance
Optimized materials and heat treatment processes provide high tensile and fatigue resistance, reducing failures and downtime.
Wide Application Compatibility
The pipes are suitable for casing tubes, drill rods, and core tubes, meeting drilling system requirements for oil, gas, and mineral exploration projects.
Custom Size and Surface Finish Options
We support custom diameters, wall thicknesses, and surface treatments, ensuring seamless integration with customers' drilling tool systems and couplings.
5. Chemical Composition
Below are typical compositions for grades under JIS G3465, with element percentages (by weight):
| Grade | C | Si | Mn | P max | S max |
|---|---|---|---|---|---|
| STM‑C540 | ~0.18‑0.24 | ≤0.04 | ≤0.50 | ≤0.04 | ≤0.04 |
| STM‑C640 | ~0.20‑0.26 | ≤0.04 | ≤0.50 | ≤0.04 | ≤0.04 |
| STM‑R590 | ~0.18‑0.24 | ≤0.04 | ≤0.50 | ≤0.04 | ≤0.04 |
| STM‑R690 | ~0.20‑0.26 | ≤0.04 | ≤0.50 | ≤0.04 | ≤0.04 |
| STM‑R780 | ~0.22‑0.28 | ≤0.04 | ≤0.50 | ≤0.04 | ≤0.04 |
6. Mechanical Properties
| Steel Grade | Min Tensile Strength (MPa) | Min Yield Strength (MPa) | Min Elongation (%) |
|---|---|---|---|
| STM‑C540 | 540 | – | 18 |
| STM‑C640 | 640 | – | 16 |
| STM‑R590 | 590 | 375 | 18 |
| STM‑R690 | 690 | 440 | 16 |
| STM‑R780 | 780 | 520 | 15 |
7. Applicable Standards
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JIS G 3465:2019 — Seamless Steel Pipe for Drilling (primary design and quality standard).
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Comparable industry standards include KS E 3114 and API 5CT, which are also used for drilling pipe specifications.
8. Application Fields
Oil & Gas Drilling
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Casing Pipes: Line the drilled borehole to prevent collapse and isolate formations.
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Drill Rods: Transmit torque and drilling fluid under high mechanical load.
Geothermal & Water Well Drilling
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Core Tubes: Extract geological core samples while drilling for resource evaluation.
Mineral Exploration
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Drilling Tool Components: Used in deep exploratory drilling for mining prospects.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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