Coded Welding Services | TES
TES delivers fully certified coded welding services, supporting critical infrastructure, industrial operations, and complex engineering projects across the UK. Our welding capability is built on technical expertise, strict adherence to industry standards, and a commitment to quality, safety, and reliability.
What Are Coded Welding Services?
Coded welding refers to welding carried out by qualified welders who have been tested and certified to specific industry standards. These qualifications ensure that welds meet stringent structural and safety requirements, particularly in high-risk or regulated environments such as pressure systems, pipelines, and heavy industrial plant.
At TES, all welding activities are performed in accordance with approved procedures and by coded welders, ensuring full compliance, traceability, and assurance of quality.
Materials We Work With
Our teams are experienced in welding a wide range of materials, including:
- Carbon steel
- Stainless steel (various grades including 304, 316, 310 & 347)
- Alloy steels (including P91, P22, P11 & 16Mo3 chrome moly grades)
- Aluminium (where required)
Material selection and welding techniques are carefully matched to application, operating conditions, and client specifications.
Welder Skillset & Expertise
Our coded welders bring extensive industry experience and are qualified to work across a variety of demanding environments.
Capabilities include:
- Structural and pipe welding
- Thin wall to heavy wall welding
- Positional welding (all positions)
- High-integrity and pressure system welding
- Mirror welding for limited access repairs and installations.
- Shutdown and outage support
All welders are regularly tested and certified to maintain compliance and ensure consistent quality.
Welding Processes & Capabilities
TES offers a full suite of welding processes to suit different materials, environments, and project requirements:
- TIG (GTAW) – precision welding for high-spec applications
- MMA (SMAW / Stick) – versatile and ideal for site work
- MIG (GMAW) – efficient welding for production environments
- FCAW – high-deposition welding for heavy fabrication
- Submerged Arc Welding (SAW) – for large-scale fabrication (where applicable)
- Orbital welding – for high-purity and repeatable pipe welds (if required)
Our engineers select the most appropriate process based on quality, efficiency, and compliance needs.
Industry Standards & Compliance
All coded welding services are delivered in line with recognised national and international standards, including:
- ISO 9606 – Welder qualification
- ISO 15614 – Welding procedure qualification
- BS EN 13480 – Industrial piping
- BS EN 12952 – Water-tube boiler and Auxiliary Installations.
- ASME IX – Welding and brazing qualifications
- BS EN 1090 – Structural steelwork execution
- PD 5500 – Pressure systems (where applicable)
We also comply with client-specific standards, project specifications, and UK regulatory requirements, including Pressure Systems Safety Regulations (PSSR).
Sectors We Support
TES provides coded welding services across a wide range of industries:
- Energy from Waste (EfW)
- Power Generation
- Oil & Gas
- Petrochemical & Process
- Manufacturing & Heavy Industry
- Water & Utilities
- Infrastructure & Construction
Our sector experience ensures we understand the operational, safety, and compliance demands of each environment.
Quality Assurance
Quality is central to every weld we deliver.
Our QA approach includes:
- Approved Welding Procedure Specifications (WPS) dual qualified to ASME IX and BSEN 15614
- Procedure Qualification Records (PQR) dual qualified to ASME IX and BSEN 15614
- Welder qualification records and continuity logs
- Full material traceability (EN 10204 3.1 certification)
- Full consumable traceability and storage.
- Non-Destructive Testing (NDT): PAUT, UT, RT, MPI, DPI
- Inspection & Test Plans (ITPs)
- Detailed method statement, outlining planned activities to coincide with ITP stages.
- Extensive experience in developing strategies to overcome complex piping installations.
This ensures all work is fully documented, traceable, and compliant with project and regulatory requirements.
Accreditations
TES operates in line with recognised industry frameworks and best practices. While project-specific requirements may vary, our operations typically align with:
- ISO 9001 – Quality Management Systems
- ISO 14001 – Environmental Management
- ISO 45001 – Occupational Health & Safety
We also work in accordance with client-approved vendor and contractor accreditation systems.
Project Scale & Capability
TES supports a wide range of project sizes, including:
- Small-scale repairs and maintenance welding
- Medium-scale fabrication and installation works
- Large-scale industrial projects and shutdowns
- High-volume welding for major infrastructure or plant upgrades
Our scalable workforce and flexible delivery model allow us to mobilise quickly and meet demanding project timelines.
Geographic Coverage
We provide coded welding services across:
- The United Kingdom (nationwide coverage)
- On-site and workshop-based delivery
- Potential support for international projects (subject to requirements)
Our mobile teams are fully equipped to deliver safe, efficient welding services in live operational environments.
Pricing & Commercial Approach
TES offers flexible and transparent pricing structures tailored to each project.
Typical pricing models include:
- Day rates for coded welders and supervision
- Time & materials (T&M)
- Fixed-price packages for defined scopes
- Framework agreements and long-term contracts
All projects are scoped in detail to ensure accurate pricing, cost control, and value for clients.
Why Choose TES for Coded Welding?
Proven Track Record:
Extensive experience delivering coded welding across critical industrial sectors.
Highly Skilled Workforce:
Fully qualified, experienced coded welders with multi-process capability.
Compliance Assured:
Strict adherence to industry standards, procedures, and regulatory requirements.
Quality First Approach:
Robust QA/QC processes ensuring consistency, traceability, and high-integrity welds.
Flexible & Responsive:
Ability to support planned works, shutdowns, and emergency call-outs.
Safety-Focused Delivery:
Strong safety culture embedded across all operations.
End-to-End Capability:
Integration with TES fabrication, installation, and maintenance services for complete project delivery.
