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Rail Car Manhole Covers
Rail Weld Rings
Rail 3” Aluminum Swing Check Valve
Industrial
Pressure Manholes 20”
Non-Pressure Manholes 16” 20” 24” 30”
Non-Pressure Fill Covers and Access Ports
LJ 10” Pressure Relieving Fill Covers
Pressure Vacuum Tank Hatch Covers
Weld Rings
Civacon
Sureseal
Knappco
Petroleum Tank Truck
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Knappco weld rings are available in steel, stainless steel (304 and 316), aluminum and come in a wide range of sizes (6" to 32") for a perfect fit with your fabrication processes.
Knappco weld rings are available in steel, stainless steel (304 and 316), aluminum and come in a wide range of sizes (6" to 32") for a perfect fit with your fabrication processes.