Adhesive Bonding DIN 6701 Certification

Introduction to DIN 6701 Certification

Besides welding, adhesive bonding is widely used for safety‑related components. Corresponding to EN 15085 welding standard, DIN 6701 specifies bonding requirements for railway vehicles and parts manufacturers, covering design, production and quality control of bonding processes.

Issued by the German Federal Railway Authority (EBA) in May 2006, DIN 6701 is a dedicated quality standard for bonding technology in the railway industry.

DIN 6701 Standard Structure

Part 1: Bonding for railway vehicles and components

Part 2: Requirements for manufacturers, including bonding supervisors, personnel qualification and approval procedures

Part 3: Guidelines for design, construction and verification with bonding classification

Part 4: Production control, quality assurance and maintenance requirements

Eligible Enterprise Types

Manufacturing, repair, design, distribution of bonded parts and professional bonding contractors

Certification Requirements

Manufacturers of railway vehicles and bonded components can apply for DIN 6701 certification. Audits verify full compliance with standard requirements. The certificate is valid for 3 years with annual surveillance audits.

DIN 6701 Certification Process

01 Step 1: Bonded Joint Classification

Classify joints by safety risk into four grades:

A1: High safety requirement, failure endangers life and operation reliability.
A2: Medium safety requirement, failure may cause personal injury.
A3: Low safety requirement, failure only affects comfort.
A4: Non-safety related joints with no risk hazard.
02 Step 2: Define Certification Scope

Confirm bonding scale, workshop range, design responsibility and process engineering scope during the audit.
03 Step 3: Appoint Bonding Personnel

Assign qualified bonding supervisors and operators with valid competence matching the production scope.
04 Step 4: Establish Internal Management System

Implement standardized procedures including joint classification, process documents, quality records and continuous process improvement.
05 Step 5: On-site Audit

The audit covers 8 key modules: organization, personnel qualification, contract review, supplier management, design & adhesive selection, production documentation, warehouse logistics and quality inspection.