Project background

Xiong'an New Area is the flagship state-planned new city about 100 km southwest of Beijing. The Starting Area is the core development zone, and its first-phase road network — numbered EA1, EA2 and EA4 — carries the city's main municipal utilities: potable water, reclaimed water, rainwater drainage, gas and power conduit.

These three roads together form about 22 km of municipal corridor. Because Xiong'an is built to 100-year design standards, every buried utility inside the road reserve is required to meet the highest national specification. The project owner and the EPC contractor ran a strict pre-qualification process for pipe suppliers, including factory audits, type-test reports and sample pressure testing.

The challenge

Municipal road works in China normally use ductile iron pipe for water and ordinary steel pipe for gas. But Xiong'an's design brief specified a longer service life and lower failure rate, because any future excavation inside the Starting Area would mean cutting open a brand-new city road — both costly and politically sensitive.

The engineering team had three specific requirements that ruled out conventional products:

1. The potable water pipe had to be certified for drinking-water contact, with a smooth internal lining that resists scaling and biofilm build-up over decades.
2. The reclaimed water (Zhongshui) and rainwater pipe had to resist aggressive effluent and urban runoff chemistry, which would corrode ordinary cement-lined or galvanized pipe within 10–15 years.
3. All buried steel pipe had to carry external anti-corrosion coating strong enough for 50-year design life, including sections under heavy road loading and near groundwater table.

Why they chose Kaiyide

Kaiyide was one of three pipe manufacturers shortlisted after the EPC contractor reviewed test reports and visited Tianjin. We were selected because:

- Our internal/external EP/PE plastic-coated pipe holds the China National Drinking-Water Safety Sanitation License, covering the exact sizes specified for potable and reclaimed water.
- Our 3PE anti-corrosion pipe is manufactured to GB/T 23257 with Type Test approval from the China Special Equipment Inspection and Research Institute, which matched the gas and heavy-loading sections.
- We could supply the full size range — DN100 up to DN800 — from one Tianjin plant, 1.5 hours from the site, which meant frequent small-batch deliveries to the road construction schedule without holding large on-site stock.
- Every batch came with documented hydraulic pressure testing at 5.0 MPa, coating thickness, adhesion and impact reports, which the EPC contractor needed for their archive submission to the Xiong'an project supervision office.

What we supplied

For the EA1, EA2 and EA4 road works we delivered:

- Internal/external plastic-coated steel pipe (EP interior, PE exterior), DN100–DN500, for potable water and reclaimed water mains inside the road reserve.
- 3PE external coated steel pipe, DN200–DN800, for the sections carrying gas and heavy-traffic loading.
- Hot-dip plastic-coated power conduit, DN100–DN200, for the municipal power and communication cable network.
- Matching fittings: bends, reducers, tees and flange adapters, coated with the same system to keep the anti-corrosion continuity at joints.

Total delivery ran across eight batches over four months, aligned with the road construction sequence. Pipe was trucked directly from our plant to the site staging yard, unloaded by the contractor's own crane fleet, and joint-coated on site by our technical team.

Installation and quality control

Because the pipe was being buried inside a brand-new city road, the EPC contractor ran a stricter-than-normal installation protocol:

- Each pipe length was inspected visually for coating damage before lowering.
- Field weld joints were shot-blasted, primed and wrapped with heat-shrink sleeves matched to the 3PE system.
- Backfill used fine sand around the pipe body, with no sharp stones within 300 mm.
- Every section was hydro-tested at design pressure for 24 hours before the road surface was laid.
- CCTV inspection was run on the larger-diameter water lines after backfilling.

Our technical engineer was on site for the first two months to train the contractor's installation crews and sign off on every joint-coating batch.

Result

The EA1, EA2 and EA4 road sections were opened to traffic in stages through 2025 and 2026. The pipe network inside has been in service without reported leaks. The project supervision office has accepted our batch test reports into the as-built archive, and the EPC contractor has asked us to pre-qualify for the next phase of Xiong'an road works.

For Kaiyide, supplying Xiong'an is the strongest reference we can offer. Any pipe that passes Xiong'an's engineering and audit process is, by definition, a pipe that can hold up under the world's most demanding municipal specification.

What this means for overseas buyers

If you are a municipal utility, EPC contractor or infrastructure buyer outside China, the same pipe we supplied to Xiong'an is available for export:

- Internal/external EP/PE coated pipe for potable water, reclaimed water and fire service, DN25–DN1800.
- 3PE anti-corrosion pipe to GB/T 23257 or DIN 30670 for gas, oil and heavy-loading buried service.
- Hot-dip plastic power conduit for cable protection.
- Full batch test reports, Type Test approval, and third-party inspection from CCS, SGS or equivalent labs.
- Live video factory tour before order, and container-loading photographs before departure.

Send us your pipe diameter, pressure rating, medium (water / gas / reclaimed) and quantity, and we will reply within 24 hours with a quotation and sample test reports.