1. Material & Standards

• Type: Oilfield Casing & Tubing

• Standards: API 5CT, ISO 11960

• Grades: J55, K55, N80, L80, P110, Q125

• Thread Types: LTC, STC, BTC, Premium connections

2. Key Features

✔ High Strength & Toughness – Suitable for deep well and high-pressure conditions
✔ Excellent Collapse & Burst Resistance – Ensures wellbore integrity
✔ Corrosion Resistance – Available with internal/external coatings for extended service life
✔ Reliable Connections – API threaded or premium threaded ends for leak-proof performance

3. Applications

• Oil and Gas Drilling

• Well Casing to Stabilize Boreholes

• Tubing for Production Flow of Oil and Gas

• Enhanced Oil Recovery (EOR) Projects

4. Certifications

• API 5CT Monogram License

• ISO 9001 Quality Management

• Third-party inspection (SGS / BV / DNV)

Frequently Asked Questions (FAQ)

1. Are you a manufacturer or trading company?
We are a manufacturer with our own factory located in Hebei, China.

2. What materials do you offer?

• Stainless Steel: 304, 304L, 316, 316L, 321, etc.

• Carbon Steel: ASTM A105, ASTM A350 LF2, Q235, Q345, etc.

• Alloy Steel: ASTM A182 F11, F22, F5, etc.

3. Which standards do your products comply with?
ASME B16.5, ANSI, ASTM, DIN, JIS, EN, GB — with third-party inspection available.

4. Do you support OEM/ODM customization?
Yes, we provide custom machining, coating, marking, and packaging based on your drawings.

5. What is your minimum order quantity (MOQ)?
MOQ is typically 1 piece for standard items; customized parts may vary.

6. Do you provide free samples?
Yes, free samples for standard sizes are available; buyers cover shipping cost.

7. What is your delivery time?

• In-stock: 3–5 working days

• Bulk/custom orders: 10–25 working days

8. How do you ensure product quality?
We perform full inspection: raw material verification, dimensional checks, pressure/leak tests, and surface finish inspection. Third-party testing is available upon request.