localtion: >> English >> Product center >> Drill Tools

Crossover, pup joint and lift sub

Cross-over subs3

SFMC cross-over subs are made from 4145H alloy steel, that are heat-treated according to drill collar specifications to ensure a hardness range of 285-341. Brinell. Charpy “V” notch minimum impact strength of 40 ft-lb at 700F are guaranteed one inch below the surface. it acts as connecting and change-over, deliver torque function in different types of drill tools. All connections are phosphated or coppered coating to minimize galling on initial make-up and drilling operation.

Specification and Sizes

 
Type

Size (in)

Standard

σb
(MPa)

σ0.2
(MPa)

δ4
%

Akv
(J)

HB

Rotary Joint

3 1/8~6 7/8

API Spec.7

≥965.3

≥758

≥13

---

>285

7~10

≥931

≥689

3 1/8~7 3/4

SY5200-93

≥965

≥760

≥13

≥54

285~340

8~11

≥930

≥690

277~340

3Pup Joints
All SFMC pup joints are manufactured from the integral bars of AISI 4145H Modified chromium molybdenum alloy steel heat-treated according to drill collar specifications to ensure a hardness range of 285-341. Brinell. Charpy “V” notch minimum impact strength of 40 ft-lb at 700F are guaranteed one inch below the surface. The mechanical properties of pup joints are guaranteed between G-105 and S-135 drill pipe with same pin ID. All connections are phosphated or coppered -coated to improve resistance to galling.

The pup joints with length of between 5 ft and 20 ft are available

 

Lifting Subs
SFMC Lifting Subs are made from 4145H alloy steel, that are heat-treated according to drill collar specifications to ensure a hardness range of 285-341. Brinell. Charpy “V” notch minimum impact strength of 40 ft-lb at 700F are guaranteed one inch below the surface. All connections are phosphated or coppered coating to minimize galling on initial make-up and drilling operation.

Copyright: Shanxi Fenglei Drilling Tools Co., Ltd ©2009-2010
Technical Assistance: Haishuo Technical Co., Ltd
ICP:06001348