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Commodity name： Drill Collar

Drill Collar

Category:

Oil country tubular goods

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

Keyword:

Drill Collar

sales011@kgjtsteel.com

Get expert sales advice within 12 hours.

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Packing And Delivery

Located in the Free Trade Pilot Zone of Jinan City, Shandong Province, close to Tianjin Port and Qingdao Port, China's famous ports, it has a superior production and operation environment, convenient logistics exports, mature industrial facilities, and complete supporting industries.

Factory

The company is equipped with a complete product production line. Cutting machines, bending machines, punches, water jet cutting machines, polishing machines, shearing machines, wire drawing machines and other professional equipment are complete.

Honor

Quality-oriented, constantly achieve product optimization, to create high-quality steel, is our constant pursuit. The products have passed the national security 3C certification, EU CE certification and ISO9001 international quality system certification.

Customer visit

At the same time, we have also set up a professional international trade service team, with a sales network all over the world. With many advantages with North America, South America, Europe, Southeast Asia, the Middle East and Africa customers cooperation, and has been in Peru, the Philippines, Russia, Ukraine, Belarus, Uzbekistan, Pakistan, Indonesia, Malaysia, South Africa, Sri Lanka, Turkey, Vietnam, Laos, Brazil, Thailand, the Middle East, the United Arab Emirates, Morocco, Spain, the United States, New Zealand, Iran and other more than 30 countries.

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How long does your delivery time take?

Generally, our delivery time is within 7-45 days, if there is a great demand or special circumstances, it may be delayed.

How could you guarantee your products?

Each piece of products is manufactured by certified workshops, inspected by Linxu piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

Do you accept the third party inspection?

Yes absolutely we accept.

Do you provide samples ? Is it free or extra ?

The sample could can provide for customer with free,but the courier freight will be covered by customer account.

Will you delivery the goods on time?

Yes,we promise to provide best quality products and delivery on time. Honesty is our company's tenet.

Are you trading company or manufacturer ?

We are professional manufacturer with rich experience, and our company also is a very professional a trade company for steel products. We can also provide a wide range of steel products.

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Oil country tubular goods

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