Drilling tools
drill collar, spiral drill collar, integral heavy wall drill pipe, and non-magnetic drill collar,
Port: Tianjin
Minimum Order Quantity: 10 Piece/Pieces .
Supply Ability: 6000 Piece/Pieces per Year .
Payment Terms: L/C,T/T
Contact SupplierPackaging Detail: as customer`s request
Delivery Detail: 2month
Drilling tools
Our main products are: drill collar, spiral drill collar, integral heavy wall drill pipe, and non-magnetic drill collar, square and hexagonal Kelly, spiral heavy wall drill pipe, cross-over subs and; lifting subs. All drill tools manufactured by Hengshan are in strict accordance with SY/T 5144-2008 and API SPEC 7-1 standard applied in the petroleum and gas industry.
New technologies for drilling tools:
1. New laser quenching technology for drill collar connection thread
2. Research and development of efficient and gall-resistant drill collar
Now the mechanical properties of the Hengshan drilling tools products are better than the API SPEC 7-1 standard, the detail parameter as follow table:
| External Diameter (mm) | Yield Strength Mpa | Tensile Strength Mpa | Tensile Strtch % | Brinell Hardness HB | Charpy Impacting Energy J |
| 79.4-171.4 | API»758 Heng»830 | API»965 HENG»1020 | API»13 HENG»16 | API:285~341 HENG:285~341 | API»54 HENG»80 |
| 177.8 or more | API»689 HENG»750 | API»930 HENG»970 | API»13 HENG»14 | API:285~341 HENG:285~341 | API»54 HENG»80 |