OCTG

octg

St. Louis Pipe & Supply offers you competitive pricing and global shipping for your Oil Casing Tubular Goods (OCTG) requirements. We have been leading the industry for over 20 years, so contact us today to get a quote.

All materials supplied by St. Louis Pipe and Supply will meet or exceed ASTM, ASME, ANSI and/or API standards, per your required specifications including full documentation. The items are available in domestic or import from stock, but if a particular item is not in stock at the moment of you request, we guarantee same day shipping or shortest lead time available.

API H40

General purpose pipe manufactured to API specification 5CT.

  • Minimum Yield Strength: 40,000 psi
  • Maximum Yield Strength: 80,000 psi
  • Minimum Tensile Strength: 60,000 psi
API J55

General purpose pipe manufactured to API specification 5CT. Similar to K55 except the minimum tensile strength is lower. Usually, this grade is used in tubing applications.

  • Minimum Yield Strength: 55,000 psi
  • Maximum Yield Strength: 80,000 psi
  • Minimum Tensile Strength: 75,000 psi
  • Hardness Requirement: None
API K55

General purpose pipe manufactured to API specification 5CT. Usually, this grade is used in casing applications.

  • Minimum Yield Strength: 55,000 psi
  • Maximum Yield Strength: 80,000 psi
  • Minimum Tensile Strength: 95,000 psi
  • Hardness Requirement: None
API L80

Manufactured to API specification 5CT. This is a controlled yield strength material with a hardness testing requirement. L80 is usually used in wells with sour (H2S) environments.

  • Minimum Yield Strength: 80,000 psi
  • Maximum Yield Strength: 95,000 psi
  • Minimum Tensile Strength: 95,000 psi
  • Hardness Requirement: 23 HRC maximum
API N80 (or N80 Q&T)

General purpose pipe manufactured to API specification 5CT.

  • Minimum Yield Strength: 80,000 psi
  • Maximum Yield Strength: 110,000 psi
  • Minimum Tensile Strength: 100,000 psi
  • Hardness Requirement: None
API Normalized N80

A lower-cost alternative to standard Quench and Tempered API N80 (walls less than 0.500 inch). Inspection, testing and dimensions are in accordance with API 5CT for grade N80. Charpy v-notch impact test absorbed energy results meet API SR16 and are lower than Quench and Tempered N80.

  • Minimum Yield Strength: 80,000 psi
  • Maximum Yield Strength: 110,000 psi
  • Minimum Tensile Strength: 100,000 psi
  • Hardness Requirement: None
API C90

API controlled yield strength grade generally for use in sour condensate wells. Extensive hardness testing is required along with SSCC testing per NACE Standard TM-0177-Method A. The minimum threshold stress required is 80 percent of specified minimum yield strength.

  • Minimum Yield Strength: 90,000 psi
  • Maximum Yield Strength: 105,000 psi
  • Minimum Tensile Strength: 100,000 psi
  • Hardness Requirement: 25.4 HRC maximum
API C955

API grade with the same strength range as T95 and U. S. Steel C95, but without a hardness requirement. This grade is not generally considered for use in sour condensate wells since no hardness restrictions or testing is required and no SSCC testing is required.

  • Minimum Yield Strength: 95,000 psi
  • Maximum Yield Strength: 110,000 psi
  • Minimum Tensile Strength: 105,000 psi
  • Hardness Requirement: None
API T95

API controlled yield strength grade, the same as API C95 and U. S. Steel C95. Generally for use in sour condensate wells. Extensive hardness testing is required along with SSCC testing per NACE Standard TM-0177-Method A. The minimum threshold stress required is 80 percent of specified minimum yield strength.

  • Minimum Yield Strength: 95,000 psi
  • Maximum Yield Strength: 110,000 psi
  • Minimum Tensile Strength: 105,000 psi
  • Hardness Requirement: 25.4 HRC maximum
API P110

API grade for general use in deep wells. This grade is not generally considered suitable for sour condensate wells.

  • Minimum Yield Strength: 110,000 psi
  • Maximum Yield Strength: 140,000 psi
  • Minimum Tensile Strength: 125,000 psi
  • Hardness Requirement: None
API Q125

API grade for deep well service, not generally for use in sour condensate wells. Quadrant hardness testing is required without any specified limits other than the variation between readings. Impact testing is required for each heat and/or lot. NDT inspection is required with two methods of inspection (typically EMI and UT are performed on this product).

  • Minimum Yield Strength: 125,000 psi
  • Maximum Yield Strength: 150,000 psi
  • Minimum Tensile Strength: 135,000 psi
  • Hardness Requirement: No limit specified – Hardness variation requirement

Learn more about OCTG pipe & supplies.