Сабвуфер для бурения нефтяных месторождений API

A crossover sub is used to crossover from one connection size to another or as the disposable component used to extend the connection life of a more expensive drill stem member.

Crossover subs are available with:

1. box x pin

2. box x box or

3. pin x pin connections.

Crossover Subs are manufactured from 4145H alloy steel. The connections are protected by a phosphate surface coating that minimizes galling on initial make-up.

Dongying Kangya Petroleum Equipment Co.,Ltd.is a professional manufacturer and supplier of all types of petroleum equipment.The company is located in Dongying, the beautiful petroleum city at Yellow River Delta, covers an area of more than 330 million square meters.

And we have many years of history in the petroleum equipment industry.Our main products include drilling equipment,oil production equipment,wellhead equipment,well control equipment,downhole tools,OCTG pipe,\tvavle & pipe fitting and oilfield tools.

Currently,our products is already exported to America, Middle East, Australia,Africa and 20 other countries and regions.

Our company has always focused on research, development and innovation.Kangyapetro will initiate the second phase of our development strategy.Our company regards "reasonable prices, efficient production time and good after-sales service" as our tenet. We hope to cooperate with more customers for mutual development and benefits. We welcome potential buyers to contact us.

1) How can I place order?

A: You can contact us by email about your order details, or place order on line.

2) How can I pay you?

A: After you confirm our PI, we will request you to pay. T/T and Western Union are the most usual ways we are using.

3) What's the order procedure?

A: First we discuss order details, production details by email or TM. Then we issue you an PI for your confirmation. You will be requested to do pr -epaid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 15-25days if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you.

4)How do you take care when your clients received defective products?

A: replacement. If there are some defective items, we usually credit to our customer or replace in next shipment.

5)How do you check all the goods in the production line?

A: We have spot inspection and finished product inspection. We check the goods when they go into next step production procedure.

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