API Petroleum 9-1/2"Spiral Drill Collar

1. Quick detail:

A. Material:AISI 4145H Modified Alloy steel, Non-mag Material
B. Size: 3-1/8"-11"

C. Inspection&Test: When producing, traceability are maintained from the receipt of raw material to completion of final products, and serial numbers are die-stamped on each workpiece body. During each manufacturing process, inspection and test are performed.

D. Main Market:Middle East, North America, Europe

E. Export Percentage: 95%

F. Supply Ability: 1000 sets per month

2. Goods Description:
Drill collars are manufactured strictly according to API Spec7-1 standard with material of AISI 4145 Mod. Kingwell supplies slick drill collars, spiral drill collars and non-magnetic drill collars etc. The size of drill collar Kingwell is from 3-1/8 to 11 inches. Besides models listed in the table below, other drill collars at customers' specific request can be available

3. About Kingwell:

Xi'an KINGWELL OILFIELD MACHINERY Co., Ltd. (KINGWELL), is a highly reputable supplier for oilfield equipment and services to Oil & Gas industries and provide complete solutions.

With over 10 years developing, we were developed from the beginning drilling service to manufacture factory who produce OCTG, DST tools and Solid control products.




4. Certificates:

Kingwell is an CNPC&SINOPEC& BV certified company, having all the Quality Systems in place for design, planning, manufacturing and quality monitoring & traceability to ensure our products match the highest quality standards.

5. Technical Parameter:

6. Drill Pipe Drawing:


7. Quality Control/Inspection:

We own the world-class facilities with professional laboratory technicians.






8. About delivery:

Generally, goods are in stock, warehouse machine need 3 days delivery for paint and package, tell us: what colors u need. If every material is ready, 10 days finish the goods.

If material is not ready,20 days to delivery. Because we still have other order to do at the same time.

And we will sign 45 days in agreement; delivery time is usually in advance.

9. About Logo:KW, we can produce according to customer requirements.

10. About Quality: All the products with API, low price are not -API, cannot be exported.

11. About Warranty: Warranty period is 1 year after installation.

12. About Payment: 30% of the advance payments, delivery time, please pay 70%.

13. About Ttechnical Documents:I submit the following accompanying technical information in English,

A: Test Report in accordance with the appropriate API or national test standards outline

B. Commerial Invoice

C: Original copy of quality certificate

D: Packing List

E: The chemical element ,Mechanical properties.

14. About Service:

We believe in Customer delight, achieved by the supply of Quality Products & Services and Continual Improvement in our Manufacturing Processes for timely delivery at competitive prices. We work in a professional, competitive, and cost-effective manner consistent with the Customer requirement.