Casing 9 5/8″ / BG95SS / Conn: BGC / N.W: 53.5 ppf / PSL3 / Baosteel

9 5/8 Inch Casing Pipe / Grade BG95SS with BGC Premium Connection / API 5CT/ PSL3 / Severe Sour Service / Baosteel

This 9 5/8-inch casing pipe is a premium, high-performance Oil Country Tubular Good (OCTG) engineered specifically for the most demanding drilling and production environments.

this product is backed by decades of experience supplying complex and challenging oilfields, including Daqing, Tarim, Shengli, and Bohai Bay offshore fields, with exports to Europe, America, the Middle East, and Southeast Asia.

Dimensionally, this casing features a nominal size of 9 5/8 inches (244.48 mm outside diameter) with a wall thickness of 0.545 inches (13.84 mm), resulting in a nominal weight of 53.5 ppf , equivalent to approximately 79.6 kg/m. This weight is standard for load calculations, stress analysis, cementing design, and wellhead equipment selection. The pipe is supplied in Range R3 length, meaning each joint measures between 38 and 48 feet (approximately 11.6 to 14.6 meters), which reduces the number of field connections, accelerates installation, and significantly lowers project costs.

The core strength of this product lies in Two critical and unmatched features:

1. BGC Premium Connection (Baosteel Gas-tight Connection): The BGC connection is a proprietary, high-performance threaded and coupled connection featuring a metal-to-metal seal developed by Baosteel for high-pressure, gas-tight applications. This connection type is ideally suited for deep wells, high-pressure/high-temperature (HPHT) wells, directional and horizontal wells that experience significant bending stresses, and gas wells requiring absolute leak-tight performance. With high-precision threads and a reliable metal-to-metal seal, the BGC connection ensures long-term leak resistance under extreme downhole conditions.
2. PSL3 Quality Level: This product is supplied to the highest API 5CT Product Specification Level – PSL3. Beyond the requirements of PSL1 and PSL2, PSL3 imposes the strictest controls on chemical composition (precise control of alloying elements and reduction of impurities), mechanical properties (yield and tensile strength with minimal scatter), Charpy V-notch impact toughness (including low-temperature testing down to -46°C), advanced non-destructive examination (full-body ultrasonic and radiographic testing), and stringent dimensional tolerances. This level is mandatory for critical, high-stakes applications where safety, integrity, and long-term reliability are non-negotiable.

This casing is manufactured in accordance with API 5CT, the primary and reference standard for casing and tubing in the oil and gas industry. The pipe is produced as seamless, making it the most reliable choice for deep, high-pressure, and corrosive environments.

Primary Applications:

Casing for severe sour oil and gas wells (high-concentration H₂S environments)

Deep wells with high pressure and high temperature (HPHT Wells)

Directional and horizontal wells requiring high-integrity, fatigue-resistant connections

Gas wells demanding absolute leak-tight performance over the well’s service life (30 to 50 years)

Offshore fields with stringent safety requirements

Important Technical Notes for Professional Buyers:

The 53.5 ppf weight for 9 5/8-inch casing is one of the most common and standardized weights in the drilling industry, ensuring easy integration into field development plans, rig selection, and surface equipment design.

The BGC connection is supplied with a Mill Test Certificate (MTC) per EN 10204 Type 3.1 (or Type 3.2 with third-party witness upon request) documenting all chemical, mechanical, impact toughness, and NDE results.

The 0.545-inch wall thickness (very close to the standard 0.544-inch) is within API 5CT tolerance and has no impact on performance or equipment compatibility.

For high-temperature wells (exceeding 180°C) or special applications with additional requirements, consultation with our technical team prior to ordering is highly recommended.

For pricing, stock availability, a complete technical datasheet, and relevant mill certificates, contact our engineering sales team today.