Product Description
Roller kelly Bushing
Roller Kelly Bushings can be classed as two types based on different ways of drive, square drive and pin drive. Also they can be classed as three types based on different style, heavy, medium and light-duty. They are used for 17 1/2 to 49 1/2inch rotary tables. They are designed and manufactured according to API Spec 7K.
Features
- API certified products all parts traceable
- Deviled into two types Square and pin drive,Also Heavy, medium, and light-weight type available
- National best quality assured.
- Single structure easy to operation
Specification
| Model |
Type |
Drive way |
applicable size of kelly(in) |
| Square |
Hex |
| HDS |
Heavy duty |
Square drive |
2 1/2"-6" |
3"-6" |
|
| 27-HDP |
Pin drive |
2 1/2"-6" |
3"-6" |
|
|
| 20-HDP |
3"-6" |
|
| RTM4 |
Medium duty |
Square drive |
|
3"-4 1/4" |
| 2 1/2"-5 1/4" |
| RTS4 |
Light duty |
|
3"-4 1/4" |
| 2 1/2"-4 1/4" |
| |
Company Profile
Packaging & Shipping
FAQ
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.
Roller kelly Bushing 
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