Xi’an Chancemate Petroleum Mechanical Co.,Ltd

API 7-1 cross-over sub (crossover sub or x-over sub)


API 7-1 cross-over sub (crossover sub or x-over sub)

Our API 7-1 cross-over sub (crossover sub or x-over sub) is manufactured from one pice of solid bars, by forging, heat treated and machined. Material we use is AISI 4145H for high quality to ensure your usage for oil well drilling to connect the drill stems, such as drill pipe, drill collar, integral blade stabilizer, etc.

API 7-1 cross-over sub (crossover sub or x-over sub) size is as belowings:

6-3/4” OD x 2-1/4” ID. NC50 Box Boreback x Reduced Section 4-3/4” OD with NC38 Pin SRG

4-3/4” OD x 2-1/2” ID. API 3-1/2” IF Pin x Box

5-1/2” OD x 3-1/4” ID. 7” Box Tool Joint OD. HT55 Pin x XT57 Box

5-1/2” OD x 2-13/16” ID. 6-5/8” Box Tool Joint OD. XT57 Pin x NC50 Box

5-1/2” OD x 2-13/16” ID. 7-1/4” Box tool joint OD. XT57 Pin x NC50 Box

8” OD x 2-13/16” ID. 6-5/8” REG Pin x GP XT57 Box

7” OD x 3” ID. NC50 Pin x XT57 Box

Send your inquiry to email: sales@chancematewellcontrol.com, we are waiting for you.