Fabrication of a Steel Clamshell Valve Cover for the Oil & Natural Gas Industry

One of our customers in the oil and natural gas industry asked us to fabricate a steel clamshell valve cover for them. This demanding fabrication allows access to the clamshell joint, and would require a full spectrum of fabrication skills, equipment, and even proprietary methods. We cut 1/8" thick A1011 carbon sheet steel and 3/16" and ¼" thick A36 plate steel into the necessary components using our Mitsubishi 3015LVplus-40CFX 4,000 watt laser cutter. We have a 242-ton Amada Promecam HFB2204/8 CNC press brake and a Power Roll with a 6' bed, which were employed to form and roll the steel sheet and plate according to 2D CAD drawings and customer specifications. A HAAS vertical Mill VF-2 performed all necessary milling before our AWS certified (D1.1) welding staff used a TIG welder and custom weld fixtures for final manual assembly. A FaroArm CMM, which performs 3D inspections, was used to verify final dimensions. These 18" wide x 22" long x 12" tall valve covers, fabricated to tight tolerances of +0.010"/-0.002", were then sand blasted and painted. We are able to fabricate these valve covers for our domestic customer in only four to six weeks.

By using a proprietary method we were able to make this complex shape with a high degree of accuracy and minimal distortion from welding. To learn more about ABC Sheet Metal, contact us now.

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Clamshell Installed
Clamshell Installed
Clamshell Painted
Clamshell Installed

Fabrication of a Steel Clamshell Valve Cover Project Details

Product Name
Clamshell Valve Cover
Product Description
Clamshell valve cover that allows access to joint when opened with opposing Clamshell
Capabilities Applied/Processes
Laser Cutting
Lathe Milling
Vertical Milling
Sand Blasting
Equipment Used to Manufacture Part
Mitsubishi 3015LVplus-40CFX 4000 Watt Laser
Amada Promecam HFB2204/8 CNC Press Brake 242 Tons
Power Roll 6' Bed
HAAS Vertical Mill VF-2
TIG Welder
Custom Weld Fixtures
Overall Part Dimensions
18" Wide
22" Long
12" Tall
Tightest Tolerances
+ 0.010" / - 0.002"
Material Used
A1011 Carbon Sheet Steel - 1/8" Thick
A36 Steel – 3/16" & 1/4" Thick
In Process Testing/Inspection Performed
Faro Arm Inspection of Individual Components and Inspection of Final Weldment
In-Process Weld Verification
Industry for Use
Oil & Natural Gas
Medium Production
Delivery/Turnaround Time
4 – 6 Weeks
Delivery Location
Standards Met
Customer Specifications
2D CAD Drawing
American Welding Society (AWS) D1.1
ISO 9001:2008

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ABC Sheet Metal | Precision-Industrial-Commercial-Sheet Metal Fabrication