American Hollow Boring Company is a provider of deep hold drilling, trepanning, honing, and machining services. Since our founding in 1918, we have added value by taking away material. No matter what your needs are, our drilling equipment can get the job done. We are ISO certified. Our services include deep hole drilling to 20", trepanning up to 16" ID, honing 1" to 24" ID, CNC machining up to 160", saw cutting up to 16" x 16", and rough machining up to 33'.