Standard Machine, Inc. - Precision Machining Since1969

Large Part Finish Machining of a Steel Cylinder Body for the Natural Gas Industry

Steel Cylinder Body
Steel Cylinder Body

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Standard Machine, Inc. specializes in manufacturing large, close tolerance components. We produced the cylinder body pictured here for a customer in the natural gas industry. The cylinder body measures 34" in length, 31" in width, and 14" in height. This project required the use of multiple machines and various work holding strategies. Using a high strength 4340 steel forging, we rough machine the work piece which entails drilling (2) 5" holes 30" deep, (1) 6.5" hole thru 34", and then the intersecting inlet / discharge holes. Once the roughing is complete the flat surfaces are finish milled, the holes are drilled and threaded and then the critical bore diameters are finish bored. The intersecting discharge and inlet holes have (3) different diameters including a seat bore which is contour circle milled to a 32 micro finish. We have (6) CNC Boring Mills that are capable of accurately machining this part. Our skilled machinists work with care and precision to maintain strict accuracy. After completion the part goes thru 100% inspection to verify that we maintained tolerances per the print specifications.

Our machining expertise, combined with decades of experience and state-of-the-art equipment, enabled us to machine this large component with precision accuracy. Current production volume is 50-150 units annually. For more information about this project, or our large part machining services, contact us today.

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Steel Cylinder Body Project Highlights

Product Name
Cylinder Body
Product Description
This steel cylinder body is used within a natural gas application.
Capabilities Applied/Processes
CNC Milling - Roughing
  • Drilling
  • Tapping
Heat Treating
Equipment Used to Manufacture Part
Toshiba CNC HBM
Overall Part Dimensions
Height: 14"
Width: 31"
Length: 34"
Tightest Tolerances
.004" True Position
+/- .001" on Bores
.002" Perpendicularity
Material Used
4340 Steel Forging
Surface Finish
32 Micro
In Process and Final Inspection
Faro Arm, Bore Gauges, Thread Gauges
Industry for Use
Natural Gas
50-150 Annually
Delivery/Turnaround Time
1 Week per Cylinder
Delivery Location
Standards Met
Customer Specifications, 2D CAD Drawing

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