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

1. Identify sub type or use. ( Kelly Saver, Crossover, Bit Sub etc.).
2. Overall length.
3. Bore diameter.
4. 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)
5. Any special requirements (i.e. float bore)

We Manufacture pup joint , Valve guide ,Rotory Sabstitute , 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.