Active Member
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[China]
Address: Room 1407,BuildingA,No.13,Beiyuan Road,Chaoyang District,Beijing,China
Contact name:Jack Cheng
Beijing Jincheng Mining Technology Co., Ltd. |
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Carbon Steel Core Drilling Tools Pipe Rotary Drill Stem Save Subs
Wear Subs
Description:
1. It is divided into drill string crossover and tubing Crossover.
2. Drill string Cross-over is divided into type A, type B and type
C.
Crossover subs are made from AISI41455H chrome molybdenum alloy
steel, and the content of micro-element can be controlled
availably. The surface of sub threads are phosphated or copperized.
According to shapes and applications, crossover subs are divided
into three types:
TypeA stands for the same diameter: one crossover sub has one size.
TypeB stands for reduce type: one crossover sub has two sizes.
TypeC for left hand thread type: the connection thread is left hand
type.
| Item | Name | Size | Connections | Upper connections part | Down connections part | Type |
| 1 | Kelly joint | 3 3/8"-7" | NC26-NC56 5 1/2FH | kelly | pipe joint | A,B |
| 2 | Pipe joint | 3 3/8"-7" | NC26-NC56 5 1/2FH | pipe joint | pipe joint | A,B |
| 3 | Transition joint | 3 1/8"-11" | NC23-NC77 6 5/8REG-7 5/8 REG | pipe joint | drill collar | A,B |
| 4 | Drill Collar joint | 31/8"-11" | NC23-NC77 6 5/8REG-7 5/8 REG | drill collar | drill collar | A,B |
| 5 | Bit joint | 3 1/8"-9 1/2" | 2 3/8REG-8 5/8 REG | drill collar | bit | A,B |
| 6 | Swivel joint | 5 7/8"-7 5/8" | 4 1/2REG-8 5/8 REG | swivel joint | kelly | C |
| 7 | Fish joint | Full sizes | All kinds | Kelly pipe joint | pipe joint | C |
| 8 | Other joints | customersized | ||||
Service
| 1. No MOQ limit, one piece sample also available. |
| 2. OEM and ODM available. |
| 3. We can take care of all shipping issues. |
| 4. After-sale service. |
FAQ
1. Shipping time for an order
We have many stock. As usual, we can delivery the goods as soon as
we get the full payment.
2. Quality Control
Strict inspection and testing for every order before shipping out .
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