Lloyd's Register Type Approval Certificate
Issued to BMT Co Ltd for double ferrule type and bite type compression tube fittings for stainless pipes under the Lloyd's Register Type Approval System.
Certificate No. LR21251337TA-02
Issue Date: 19 October 2023
Expiry Date: 27 March 2026
Issue Date: 19 October 2023
Expiry Date: 27 March 2026
Overview
SUPERLOK compression fittings are engineered for reliable, leak‑free tube connections in demanding fluid systems. This certification document confirms that the listed products have been tested with satisfactory results in accordance with the Lloyd's Register Type Approval System.
The approval covers compression fittings used in marine, offshore, and industrial piping systems where performance, safety, and durability are essential.
Products Covered
This certificate applies to the following product types:
- Double ferrule type compression tube fittings
- Bite type compression tube fittings (DIN 2353)
- Stainless steel tube fittings for high pressure applications
SUPERLOK DIN 2353 fittings are flareless metric fittings consisting of a body, compression ring, and nut. During assembly, the compression ring bites into the tube surface to create a secure, leak‑tight connection suitable for high pressure environments.
Application Scope
The certified fittings are designed for use in:
- Marine piping systems
- Offshore applications
- Industrial fluid systems
Approved media include:
- Hydraulic system fluids
- Fuel oil
- Lubricating oil
- Fresh water
- Salt water
- Gas
These applications require secure, high integrity connections that perform under pressure, vibration, and demanding operating conditions.
Ratings and Performance
The certificate specifies the following operating capabilities:
- Maximum pressure range: 2180 psi to 10800 psi (15 MPa to 74.46 MPa)
- Maximum tube outside diameter: 51 mm
SUPERLOK fittings are designed to maintain sealing integrity and mechanical strength across a wide range of pressures and system conditions.
Testing and Verification
The following tests were conducted as part of the type approval process:
- Repeated assembly test
- Burst pressure test
- Vibration test
- Pressure pulsation test
- Tightness test (leak test)
These tests validate the fitting performance under real-world operating stresses, including repeated installation, pressure cycling, and vibration.
Conditions and Installation Requirements
For use in systems classified by Lloyd's Register, the following conditions apply:
- Installation and testing must comply with applicable Lloyd's Register Rules and Regulations for ship classification
- Fittings must meet pipe class requirements based on system design
- Fire endurance testing may be required for components that could deteriorate under fire exposure
- Maximum pressure ratings must be clearly indicated for each fitting and material specification
Any modifications to product design, materials, or operating conditions must be reported for certificate validation.
Important Limitations
This certificate applies only to products that match the tested configuration.
The certificate is not valid if:
- Design, materials, or performance characteristics have been altered
- Installation does not follow the specified standards
- Certification conditions are not met
Manufacturers must notify Lloyd's Register of any changes to maintain certification validity.
Why This Certification Matters
This document provides assurance that SUPERLOK compression fittings have been evaluated under a recognized marine and industrial approval system.
For engineers, distributors, and procurement teams, it supports:
- Confidence in product performance under demanding conditions
- Validation for use in regulated marine and offshore projects
- Alignment with industry testing and classification standards
SUPERLOK fittings are manufactured with precision engineering and strict quality control, supporting consistent performance and leak‑free connections in critical applications.
Get More Information
For the most current certification status or updated documentation:
- Request the latest certificate version
- Review product catalogs and specifications
- Contact technical support for application guidance
Frequently Asked Questions
What products are covered by this certificate?
The certificate covers double ferrule type and bite type compression tube fittings for stainless pipes under the SUPERLOK brand, including DIN 2353 designs.
Who manufactures these fittings?
The manufacturer listed is BMT Co Ltd, based in Busan, South Korea.
What testing was included?
Testing includes repeated assembly, burst pressure, vibration, pressure pulsation, and leak testing.
What applications are approved?
Applications include marine, offshore, and industrial piping systems handling fluids such as oil, water, and gas.