Tender for Steel Pipes and Polyethylene (PE) Plastic Casing Pipes by Netz Leipzig GmbH, Germany

Project Title: Framework Agreement for the Supply of Plastic Casing Pipe Systems with Subsequent Insulation for Nominal Diameters DN 20 to DN 700

Procuring Entity Information:

Procuring Entity: Netz Leipzig GmbH

Main Activity: Production, transport or distribution of gas or heat

Procurement Reference Number: Internal ID 2603A002, Procedure ID 3297662a-7fd9-486a-b3a3-e83a69b91a49

Nature of Procurement:

Contract Type: Framework Agreement (Supply Contract)

Tendering Procedure: Competitive Negotiated Procedure with Prior Publication

Objective of Agreement: Award of up to 3 framework agreements

Award Principle: Award to the most economically advantageous tender based on internal project calculation

Price Fixing: Fixed prices guaranteed for at least 12 months from the effective date of the framework agreement

Contract Duration and Delivery:

Framework Agreement Duration: 48 months

Renewal Option: Right to extend twice, each extension for 2 years

First Delivery Date: 30 January 2026

Core Procurement Content:

Subject of Procurement: Plastic Casing Pipe Systems (for district heating networks)

Nominal Diameter Range: DN 20 to DN 700

System Composition:

Service Pipe: Steel pipe, material must be P235 GH (according to EN10217-2 and EN 10216-2)

Insulation Layer: Must use foam free of CFC and HBCD

Outer Casing: Polyethylene (PE) plastic casing, must comply with standards EN 253, 448, 488, 489, and AGFW FW 401, etc.

Pressure and Temperature Rating: System components to be designed for PN 16 / 140°C

Scope of Services:

Supply: Includes complete system components such as pipes, fittings, connections, etc.

Subsequent Insulation Service: Insulation of connection joints

Planned Insulation: Completion within 5 working days after notification

Emergency Insulation: Completion within 24 to 48 hours after fault occurrence

Process Requirement: Mechanical foaming process mandatory for pipes DN 300 and above

Key Technical Requirements and Certifications:

Mandatory Product Certifications: Euroheat & Power 001 certificate and AGFW FW 605 certificate

Quality Management System: DIN EN ISO 9001:2015 certificate

Environmental Management System: DIN EN ISO 14001:2015 certificate

Energy Management System: DIN EN ISO 50001:2018 certificate

Welding and Inspection Standards: Steel welded joints must comply with DIN EN ISO 5817 standard, 100% radiographic testing mandatory for welds on DN 200 and above

Foam Test Certificate: Test certificate according to DVS 2212-4 standard required

Bidder Qualification Requirements:

Economic and Financial Standing: Average annual turnover of at least EUR 9.5 million over the last 3 complete financial years

Company Size: Average number of employees at least 50 over the last 3 years

Professional Insurance: Minimum public liability insurance coverage: EUR 3 million for personal injury, EUR 3 million for property damage

Relevant Experience: At least 2 comparable framework agreement performances in the last 2 years, each with a single-year turnover of at least EUR 500,000

Language and System: Must be able to execute the project and communicate in German, and use GAEB XML format for electronic tender document processing

Tendering Process:

Tender Document Language: Only available in German

Deadline for Receipt of Tenders: 02 March 2026, 12:00 (CET)

Estimated Date of Invitation to Tender: 26 March 2026

Submission Method: Electronic submission only via the Deutsche eVergabe platform

Contract Terms Basis:

Netz Leipzig General Procurement Terms (2024 Edition) and all its modules

Relevant technical annexes, including Technical Connection Conditions for District Heating (2025 Edition), etc.

Supervision and Appeals:

Review Body: Procurement Supervision Office of the Free State of Saxony

Appeal Deadlines: Objections must be raised within 10 days of knowledge of the infringement; objections regarding obvious infringements in tender documents must be raised before the tender submission deadline