SHANDONG TERENTE STEEL CO., LTD.

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

Keywords :

Drill Collar

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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

FACTORY APPEARANCE

Factory Workshop

PRODUCT INSPECTION PROCESS

1. Collecting Samples

2. Dimensional Measurement

3. Chemical Composition Testing

4. Tensile Testing

5. UT Test

6. Bending Test

7. Hardness Test

8. Weight Test

PACKAGING AND SHIPPING

Reliable Quality

In accordance with international standards, it has strict control and stable performance, and can meet the high requirements of multiple scenarios.

Complete Specifications

A variety of materials and models are available to suit multiple industries, reducing purchases from multiple parties.

Price Competitiveness

With the advantages of scale and supply chain, it has high cost performance and reduces procurement costs.

Stable Supply

Mature production logistics ensure long-term supply and on-time delivery.

CUSTOMER VISIT

FAQ

1.Are you a factory or a trading company

We are a steel plant with large-scale production facilities in China, integrating production, processing, and sales

2. Does the company guarantee the quality and quantity of shipments

This is necessary, in order to establish a long-term partnership with our clients and be friends

3. Which port does the goods export from

Generally, it is Tianjin Port, Qingdao Port, Guangzhou Port, Shanghai Port, and can also be shipped from the port designated by the customer

4. Does the company provide after-sales service

Yes. We welcome customers to raise questions at any time, provide 365 day online answers, discuss cooperation processes, product usage, etc

5.Can we conduct on-site inspections at the factory

Of course, we always welcome overseas friends to visit, exchange, and learn on-site

6. Does it support prepayment of deposit

Of course, the specific amount will be negotiated based on the value of the product and goods

Oil country tubular goods