Sienko Precision, Inc. has been offering precision turn-key machining since 1981.
See below for a list of services and capabilities we offer.

Machining Capabilities

CNC and Manual Turning

Including threads: UN, API, Stub Acme, Acme, Buttress and many others.

CNC Vertical and Horizontal Milling

Allows for production from simple, to very complicated and precise parts.

Pull Bore and Honing of Tubing’s

Can handle diameters from 2-1/4” to 10” and lengths up to 20 feet.

Wire EDM

Inspection and Quality Control

CMM Zeiss Contura located in our 24/7 temperature and humidity controlled building is only one of many sophisticated tools which assist us with quality inspection.

Machine Specifications


Sienko Precision is a precision machining facility providing contract-machining services primarily to the petrochemical industry. We are located in Houston Texas and have been in operation since 1981.

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