Kazakhstan Municipal Central Heating Pipe Network Renovation Project

Project Overview

This key project focuses on renovating aging municipal heating pipelines in a northern city of Kazakhstan.The region features long and frigid winters with temperatures as low as -40℃, which imposes strict requirements on low-temperature toughness and weather resistance of heating steel pipes.After multiple sample tests and on-site factory audits, the general contractor chose Pengyuan Steel as the core supplier of seamless heating pipes for urban main thermal transmission pipelines.

Project Challenges

1. Buried installation in extremely cold regions; pipes must have excellent low-temperature impact toughness to prevent brittle fracture;

2. Long-term high-pressure operation transporting high-temperature hot water;

3. Outdoor field construction with tight schedule, requiring phased delivery;

4. All goods need supporting Russian standard test documents, EN 10204 3.1 mill test reports and support on-site third-party acceptance.

Supplied Products

Product: Grade 20 seamless thermal steel pipes, pre-insulated pipes with polyurethane foamSize: OD168mm～OD426mm, wall thickness 6mm～14mmTotal quantity: 2,150 metric tonsStandards: GB/T 8163, EN 10216

Pengyuan Solution

1. High-quality Grade 20 raw material adopted. Strict heat treatment control ensures qualified low-temperature impact properties suitable for frigid environments.

2. Integrated prefabrication of polyurethane insulation and HDPE outer casing on automatic production lines.

3. Every single pipe undergoes hydrostatic test and ultrasonic non-destructive testing with tight dimensional tolerance control.

4. Production and cross-border land transportation arranged in five batches in accordance with construction schedule.

5. Complete set of English mill test reports and inspection documents provided. Technical engineers offer remote support for third-party inspection and client technical consultation.

Project Result

All pre-insulated seamless pipes arrived at the construction site on time and passed joint inspection by the end client and third-party surveyors.The renovated heating network has been officially put into service during the heating season, operating stably with qualified thermal insulation performance and reduced heat loss.Consistent product quality and on-time delivery secured intentions for long-term cooperation on subsequent urban heating expansion pipelines.