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Lokring Technology
The only cold weld technology
Page last modified
January 14 2025
Lokring Technology manufactures a patented, metal-to-metal, butt weld equivalent connection for small bore pipes. Lokring, which qualifies to ASME B31 Piping Codes, can be installed in just 15 minutes and requires no hot-work and as a consequence no purging/drying, no habitats, no fire watch, and no NDT.
With over 30 years of experience, Lokring is proven to vastly reduce costs and schedule for maintenance, modifications, brownfield, and greenfield scopes whilst improving site safety.
Pros & Limitations
1
No hot work
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Rapid installation
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High integrity
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Leak free (suitable for fully welded systems)
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Safer operation
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0.001% rework
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Restricted to 4" and below
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Restriction on materials (316/316L, 312 and 304. A106 Gr B, A333 Gr 6, ASTM A53 and API 5L. C70600)
Specification
Specification Title | Specification Description |
---|---|
Compliance
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ASME B31.1 and B31.3 Piping Codes. NACE MRO175 for Sour Service.
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Certifications / lincenses
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Lloyds Type Approval | American Bureau of Shipping Type Approval | IACS Type Approval | British Ministry of Defense Approval | NAVSEA US Navy Approval.
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Sizes
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Carbon Steel Pipes – ½” to 4” | Stainless Steel Pipes – ¼” to 3” | Copper Nickle Pipes – up to 2"
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Pressure class
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Couplings, elbows and other shapes suitable for class 3000#. Flange ratings 150 to 1500#
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Temperature
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Carbon Steel: -46 to 427ºC | Stainless Steel: -253 to 427ºC
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Material
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A106 Gr B, ASTM A53, API 5L, A333 Gr 6. 304/304L, 316/316L. UNS C 70600
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Reviews
Technology Readiness Level
The Technology Readiness Level (TRL) indicates the maturity level of novel technologies. Learn more about the TRL scale used by us.
[9/9]
Development
Technology demonstration
Mature / Proven
Relative Business Impact
Solution Deployed By

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