Since leaving Australia about two weeks ago our big boy (64” Hole Opener) has already completed his first hole,

Coming out in great shape after drilling an 850 meter crossing 70 meters under the Iskar river in Bulgaria.

After a quick clean up he will be ready for his next hole.


Check out the Video here:

TRANSCO 64” x 7 Cutter Hole Opener with TRANSCO 10” Milled Tooth Field Replaceable cutters

Tools manufactured in accordance with API Spec Q1, API Spec 7.1, ISO9001-2015 ,ASME 9 and contractor requirements


Quality is integral to everything we do. Quality is everyone’s responsibility. TRANSCO will continuously improve its customer service to better satisfy the needs of its customers and will deliver to them—on time and every time—defect-free products and services conforming to customer requirements and industry standards .

api spec q1 0831qms registered iso 9001 20157 1 1081