Pup Joint

HS Code : 7306.29.00,8431.43.10

Standard : API SPEC 7-1

Usage : Connecting Drilling Strings

Packing : Steel Belt,Steel Frame

Richsen Product

Tubing Coupling

HS Code : 7307.99.00

Standard : API-5L,API-5CT

Usage : Joining Tubing

Packing : Wooden Pallet

Richsen Product

Casing Coupling

HS Code : 7307.99.00

Standard : API-5CT,API-5B

Usage : Joining Casing

Packing : Wooden Pallet

Richsen Product

Premium Thread Couplings

HS Code : 7307.99.00

Standard : API-5B,API-5CT

Usage : Joining Casing/Tubing

Packing : Wooden Pallet

Richsen Product

Coupling Blank

HS Code : 7307.99.00

Standard : API-5CT,API-5B

Usage : Thread couplings

Packing : Wooden Pallet

Richsen Product

API Casing

HS Code : 7306.29.00

Standard : API-5CT

Usage : Major structural component oil well

Packing : Steel Belt

Richsen Product