Casing 9 5.8″/TPCO/Grade TP110S /Connection TP-ST/Range R3/PSL3/API 5CT/N.W 53.5 ppf 

 Casing 9 ⅝” – TPCO – Grade TP110S – TP-ST Connection – Range R3 – PSL3 – API 5CT – Nominal Weight 53.5 ppf 

:Technical Specifications & In-Depth Engineering Description

This premium 9 ⅝ inch OCTG casing, manufactured by TPCO (Tianjin Pipe Corporation) – one of the world’s largest seamless pipe producers – is specifically engineered for deep, high-pressure, sour service wells. Fully certified to API 5CT with Grade TP110S, PSL3, TP-ST premium connection, Range R3, and a Nominal Weight of 53.5 pounds per foot, this pipe delivers exceptional performance in the most demanding downhole environments

:Key Parameters

?Why Choose This TPCO TP110S Casing with TP-ST Connection (PSL3 – R3)

 :Sour Service Excellence (Grade TP110S)
The TP110S grade is TPCO’s proprietary sour service version of P110. It features

Controlled alloying elements (Cr, Mo, Ni) to prevent HIC (Hydrogen-Induced Cracking)

Resistance to SSC (Sulfide Stress Cracking) per NACE MR0175 / ISO 15156

Optimized heat treatment (Quench & Temper) for uniform hardness below 22 HRC (critical for sour service)

 PSL3 Quality Level – The Highest Standard
PSL3 (Product Specification Level 3) imposes the most stringent requirements

100% NDT (Ultrasonic, Magnetic Particle, Eddy Current) on the entire pipe body

Strict chemical composition limits (P ≤ 0.010%, S ≤ 0.010%)

Charpy V-Notch impact testing at low temperatures (typically 0°C or -10°C)

Tighter dimensional tolerances compared to PSL1/PSL2

Full traceability from heat to finished product

 TP-ST Premium Connection – Engineered for Sour Service & High Torque
The TP-ST connection offers

Metal-to-metal seal with optimized geometry for sour environments

High torque capacity – ideal for horizontal and deviated wells requiring pipe rotation

Torque shoulder to prevent back-off under vibration and pressure cycling

Near 100% tensile efficiency (full pipe body strength)

Smooth OD/ID transition for minimal turbulence and no stress concentration points

 Operational Efficiency with Range R3
Using Range 3 (R3) joints reduces the number of connections per well by 25-30% compared to Range 2, resulting in

Faster running times (lower rig costs)

Reduced leak paths

Enhanced structural integrity in deep wells (>4,000m / 13,000ft)

Better performance in long horizontal laterals

 :TPCO Metallurgical Excellence
TPCO’s advanced quench & temper heat treatment ensures

Uniform hardness distribution across the entire pipe body

Consistent mechanical properties from end to end

Superior collapse and burst resistance

:Primary Applications

Intermediate Casing in deep onshore and offshore wells (4,000 – 6,000 meters / 13,000 – 20,000 feet)

Production Casing in HPHT (High Pressure High Temperature) sour service wells

Sour gas wells with high H₂S concentration

Offshore wells requiring high collapse resistance and dynamic load capacity

Injection wells (water, gas, CO₂) in corrosive environments

Deep geothermal wells with aggressive chemical conditions

:Quality Assurance (PSL3 Requirements)

 100% Ultrasonic Testing (UT) for longitudinal and transverse defects

 100% Magnetic Particle Inspection (MPI) of threaded ends

 Charpy V-Notch impact testing at specified temperatures

 Certified Mill Test Reports (MTR) with full traceability

 TP-ST thread gauging with TPCO proprietary gauges

 NACE MR0175 compliance certification for sour service

 Third-party inspection available upon request (BV, SGS, TUV, etc.)