Drill Collar
Drill Collar
Drill Collar
Drill Collar
Drill Collar
Drill Collar
Drill Collar
Drill Collar

Drill Collar

Product: Drill Collar Standard:API SPEC 7-1 Steel grade:AISI 4145H Sizes:3 1/8" -- 11" Connected Type:NC, IF, REG

Classification :

Oil country tubular goods

WhatsApp : +8618678909652

E-mail : nanmusen@nanmusen.com

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PRODUCT DETAILS

API SPEC 7-1 drill collar is made with rolling or forging AISI4145H chromium molybdenum alloy steel. Therefore, it needs to control chemical composition and the content of trace elements effectively.

Specification

Standard

Number

OD
(in.)

ID
(in.)

Length
(ft)

Weight
(lb/ft)

Typical Bending
Strength Ratio

SY5144-2007/API7-1

NC 23-31

3-1/8

1-1/4

30

22

2.57:1

NC 26-35 (2-3/8 IF)

3-1/2

1-1/2

30

27

2.42:1

NC 31-41 (2-7/8 IF)

4-1/8

2

30 or 31

34

2.43:1

NC 35-47

4-3 /4

2

30 or 31

47

2.58:1

NC 38-50 (3-1/2 IF)

5

2-1/4

30 or 31

54

2.38:1

NC 44-60

6

2-1/4

30 or 31

83

 

 

PACKAGING AND DELIVERY

We specialize in stainless steel plate, coil, pipe, bar, and nickel-based alloys, exporting to the USA, Germany, India, and over 50 countries worldwide with a professional foreign trade team.

FACTORY WORKSHOP

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

Factory workshop

APPLICATION FIELD

Chemical Storage

Chemical Storage

Automobile Manufacturing

Automobile Manufacturing

Precision Equipment

Precision Equipment

Pipeline Transportation

Pipeline Transportation

Steel Structure

Steel Structure

Highway

Highway

Aerospace

Aerospace

Ship Manufacturing

Ship Manufacturing

Offshore Platform

Offshore Platform

FAQ

Q: If products do not comply with the contract demands, what will you do?

Q: If products do not comply with the contract demands, what will you do?

A: We will compensate the customer for all the loss without any hesitation.
A: We will compensate the customer for all the loss without any hesitation.
Q: It's my first time importing steel products, can you help me with it?

Q: It's my first time importing steel products, can you help me with it?

A: We will do our best to give the solution and help you with the business.
A: We will do our best to give the solution and help you with the business.
Q: Can you offer free samples?

Q: Can you offer free samples?

A: We will return the sample fee once getting the mass production order.
A: We will return the sample fee once getting the mass production order.
Q: What is the delivery time?

Q: What is the delivery time?

A: Fast delivery in 5 days, up to order quantity.
A: Fast delivery in 5 days, up to order quantity.
Q: What are your terms of payment?

Q: What are your terms of payment?

A: 30% T/T in advance, balance before loading, or LC at sight.
A: 30% T/T in advance, balance before loading, or LC at sight.
Q: Do you provide custom-made Products service?

Q: Do you provide custom-made Products service?

A: Yes, custom-made is acceptable.
A: Yes, custom-made is acceptable.

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