All crossover sub, basket subs, lift plug and lift sub are manufacturing from ultrasonically tested 4145 H modified alloy steel. These are fully heat treated to a Brinell hardness range of 285-341 and have an izod impact strength of 40 Ft/ib minimum. The substitutes are made in all size as per requirement of customers.
All connection are machined and finished according to API standards, thread roof are cold rolled & connection are phosphatized.
Specification of all Subs
- Identify sub type or use. ( Kelly Saver, Crossover, Bit Sub etc.).
- Overall length.
- Bore diameter.
- Size and type of Upper and Lower connections, Indicating pin or box and special joint features (i.e stress relief grooves, bore back, low torque faces)
- Any special requirements (i.e. float bore)
We Manufacture pup joint , Valve guide ,Rotary Substitute , Rubber Parts Of Mud Pump, HW casing(In 3 to 4 meter length, All crossover( Rotary Subs) are made from 4145 H modified alloy steel quenched and tempered material to API specifications,
How to Order
1. Type of Kelly of sub required
2. Length - Overall
3. Largest diameter required
4. ID required
5. Size and Type of upper and lower connections, indicate pin or box
6. On reduced section subs - indicate both OD’s required
7. On lift subs - indicate bottleneck w/18” tapered shoulders or wafer top
8. On kelly saver subs - indicate whether or not rubber sleeve is required.
