China 9 5/8
China 9 5/8

9 5/8" API 5CT Seamless Drill Casing Pipe - 4 1/2" to 20" OD Range with 55,000-110,000 psi Yield Strength

Premium API 5CT certified seamless casing pipe for oil and gas wells, featuring alloy steel construction, OD sizes from 4 1/2" to 20", and multiple steel grades including J55, N80, and P110. Available in three length ranges up to 14.63 meters with normalized and quenched & tempered heat treatment for superior durability and performance in demanding drilling environments.

Connections EU, NU, premium connections
Steel grade K55/J55/N80/L80/P110
Usage Oil/gas/water well
Place of Origin China
Packaging Details Be bundled by steel strap
Standard API 5CT, ISO, QHSE
Product Description
9 5/8" Seamless Drill Casing Pipe Overview
API-certified oil casing and tubing designed to support oil and gas well walls, available in surface casing, protective casing, and production casing configurations.
Key Product Features
  • Alloy steel seamless pipe construction
  • OD sizes ranging from 4 1/2" to 20"
  • API 5CT compliant manufacturing standards
Technical Specifications
Parameter Specification
OD Size Range 4 1/2" - 20"
Steel Grades J55, K55, N80, L80, P110
Thread Types LTC, STC, BTC
Length Ranges R1 (4.88m-7.62m), R2 (7.63m-10.36m), R3 (10.37m-14.63m)
Heat Treatment Normalized, Quenched & Tempered
Mechanical Properties
Grade Yield Strength (Min) Tensile Strength (Min) Hardness (Max)
J55 55,000 psi (379 MPa) 80,000 psi (552 MPa) -
K55 55,000 psi (379 MPa) 88,000 psi (552 MPa) -
N80 80,000 psi (552 MPa) 110,000 psi (758 MPa) -
N80-1 80,000 psi (552 MPa) 95,000 psi (655 MPa) 23 HRC / 241 BHN
C90 90,000 psi (621 MPa) 105,000 psi (724 MPa) 25.4 HRC / 255 BHN
C95 95,000 psi (655 MPa) 110,000 psi (758 MPa) -
T95 95,000 psi (655 MPa) 110,000 psi (758 MPa) 25.4 HRC / 255 BHN
P110 110,000 psi (758 MPa) 140,000 psi (965 MPa) -
9 5/8 inch API 5CT steel casing pipe for oilfield drilling operations
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