# Oil Country Tubular Goods — OCTG

> ENGIC supplies OCTG products for drilling, completion, and production applications, including tubing, casing, drill pipe, drill pipe bodies, upset ends, and related well tubular goods.

Tubular goods for drilling, completion, and production

Supply route: Supplied through the ENGIC Trading division. ENGIC is not the manufacturer of this product family.

ENGIC supplies Oil Country Tubular Goods for upstream oil and gas applications, including drilling, well construction, completion, and production.

OCTG products are selected for demanding well environments where mechanical strength, collapse resistance, pressure resistance, corrosion performance, connection integrity, temperature exposure, and reliability are critical.

ENGIC supports clients with sourcing, specification review, supplier coordination, inspection documentation, certification control, and delivery follow-up for tubing, casing, drill pipe, and related tubular goods.

OCTG products may include:

- Production tubing
- Casing
- Drill pipe
- Drill pipe bodies
- Standard upset ends
- Special upset ends
- Finished drilling goods
- Unfinished drilling goods
- Related drilling and well tubular products

Common specification considerations may include:

- API 5CT tubing and casing
- API 5DP drill pipe
- ERW options
- Seamless options
- Plain end products
- Threaded connections
- Standard connections
- Premium connections where applicable
- Sour service requirements where applicable
- Project-specific testing and inspection requirements

Common grade references may include:

- H40
- J55
- K55
- N80
- L80
- C90
- T95
- P110
- Q125 where applicable

Application considerations may include:

- Well depth
- Collapse resistance
- Internal pressure
- Tensile load
- Corrosion environment
- H₂S / sour service exposure
- Connection integrity
- Make-up requirements
- Inspection and traceability requirements

### Grades, sizes and connections

The API envelope ENGIC has supplied against:

- Tubing to API 5CT: H-40, J-55, L-80, N-80, C-90, T-95, P-110; OD 1.050 in to 4.5 in; NU, EU, buttress and premium ends
- Casing to API 5CT: H-40 through Q-125 including L-80 9Cr/13Cr; OD 4.5 in to 20 in; STC, LTC, buttress and premium connections
- Drill pipe to API 5D: E-75, X-95, G-105, S-135; OD 2.375 in to 6.625 in; NC, IF and FH tool joints
- Range 1, 2 and 3 lengths; ERW and seamless; internal coating and slotting services

HTML page: https://engic.ltd/products/octg