9 3/8 13 3/8 Inch API 5L API 5CT J55 K55 N80 L80 P110 Premium Tubing Boiler Pipes Used Gas Oil Well Casing Pipe Project
Product Overview
The standard of API petroleum casing follows the American Petroleum Institute standards. General petroleum casing export standards are based on this, primarily including K55, J55, N80, and P110 materials. Buckle types include Short Round Buckle (STC), Long Round Buckle (LTC), and Partial Trapezoidal (BTC), which are the most common. Additionally, airtight buckles, threaded buckles, and other special shapes are available.
Oil casing can be divided into seamless and welded pipes. Seamless pipes offer superior mechanical properties compared to ordinary carbon steel pipes, making them widely used in oil drilling. Our primary markets span Southeast Asia, East Asia, the Middle East, West Asia, and Latin America.
Key Features
🎯 STRICT SELECTION
Product selection of high-quality raw materials, resistant to wind, sun, and rain. High hardness and wide application suitability.
📦 ADEQUATE STOCK
Rich product specifications that can be customized according to customer needs. Reliable supply chain ensures no out-of-stock issues.
🛡️ STABLE PROPERTY
Consistent performance with excellent processing capabilities, toughness, and plasticity for various industrial applications.
Technical Specifications
| Standard |
Model Number |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Hardness |
| API SPEC 5CT | J55 | ≥517 | 379~552 | - |
| API SPEC 5CT | K55 | ≥517 | ≥655 | - |
| API SPEC 5CT | N80 | ≥689 | 552~758 | - |
| API SPEC 5CT | L80(13Cr) | ≥655 | 552~655 | ≤241HB |
| API SPEC 5CT | P110 | ≥862 | 758~965 | - |
| Grade |
Yield Strength (min) Mpa |
Yield Strength (max) Mpa |
Tensile Strength min Mpa |
Hardness Max (HBW) |
| J55 | 379 | 552 | 517 | - |
| K55 | 379 | 552 | 655 | - |
| N80 | 552 | 758 | 689 | - |
| L80 | 552 | 655 | 655 | 241 |
| C90 | 621 | 724 | 689 | 255 |
| P110 | 758 | 965 | 862 | - |
Packaging & Delivery
- ✔ Small OD: In hexagonal bundle with steel strips
- ✔ Large OD: In bulk
- ✔ Protection: Wrapped in waterproof plastic woven bag
- ✔ Specialty: Filled in wooden cases if required
- ✔ Lead Time: Shipped in 7-15 days after payment
Manufacturing Excellence
Our facility is one of the largest manufacturers of seamless steel pipes, boasting a long-standing history of production scale and high product quality. We specialize in manufacturing pipes with diameters ranging from 20mm to 518mm and thickness from 3mm to 30mm. Our production processes include cold drawing, hot rolling, and hot processing, all guided by senior engineers. With a pass rate exceeding 99.8%, our product quality remains a leader in the industry.
Frequently Asked Questions
Are you a manufacturer?
Yes, we are a manufacturer. We have our own factory with leading capacity in producing and exporting galvanized steel pipes, seamless steel tubes, and square tubes.
Can we visit your factory?
Warmly welcome! Once we have your schedule, we will arrange to pick you up.
Can you arrange the shipment?
Sure, we have permanent freight forwarders who can secure the best prices from most shipping companies and offer professional service.
How long is your delivery time?
Generally, it is 10-35 days, depending on the order quantity.
How can we get an offer?
Please provide the product specifications, such as material, size, and shape, so we can provide the best offer.
How do you maintain long-term business relationships?
We maintain high quality and competitive pricing to ensure our customers' benefit. We respect every customer as a friend and sincerely conduct business regardless of their origin.
Savvy Tools
