Electric Resistance Welded Pipes Tubes Market

ERW Pipes as the Mainstream Choice

Low-pressure civil scenarios (working pressure ≤1MPa) include urban water supply, construction scaffolding, and indoor gas pipelines-these scenarios have high requirements for cost-effectiveness, installation efficiency, and corrosion resistance, and ERW pipes (especially ordinary ERW pipes from Huayang) have obvious advantages over spiral pipes.

Urban Water Supply and Drainage Pipelines

ERW Pipes' Adaptability (Huayang's Project Cases)

Huayang's ordinary ERW pipes (Φ50×3mm to Φ273×8mm) are widely used in urban residential water supply networks. The key reasons for their suitability are:

Cost advantage: Ordinary ERW pipes cost 30%-40% less than spiral pipes of the same diameter. For example, Huayang's Φ114×4.5mm ERW pipe is priced at 4,200 yuan/ton, while a spiral pipe of the same diameter costs about 6,500 yuan/ton. In the 2024 Shijiazhuang Residential Water Supply Renovation Project, using 5,000 tons of ERW pipes saved the project 11.5 million yuan in material costs.

Installation efficiency: ERW pipes are light in weight (Φ114×4.5mm ERW pipe weighs 12.18 kg/m) and have uniform outer diameters (deviation ≤±0.1mm), making them easy to connect with flanges or quick joints. The project team completed the laying of 20km of pipelines in 15 days-twice the speed of spiral pipe installation.

Corrosion resistance: Huayang provides epoxy coating treatment for ERW water supply pipes, with a coating thickness of 0.3mm-0.5mm. These pipes have a service life of ≥15 years in buried environments, which is comparable to spiral pipes but at a lower cost.

 Spiral Pipes' Limitations in This Scenario

Spiral pipes are rarely used in urban residential water supply for two reasons:

Over-specification: Spiral pipes are mainly designed for large diameters (≥800mm), while residential water supply pipelines usually use diameters ≤300mm-using spiral pipes leads to "large pipe small use" and unnecessary cost increases.

Installation difficulty: Spiral pipes have large diameters and heavy weights (Φ800×8mm spiral pipe weighs about 158 kg/m), requiring heavy machinery for hoisting and installation-this increases construction costs and is not suitable for narrow residential construction sites.

Construction Scaffolding and Indoor Decoration

ERW Pipes' Dominance (Huayang's Core Product)

Huayang's Φ48×3.5mm ordinary ERW pipe is the industry standard for construction scaffolding, with an annual output of over 10,000 tons. Its adaptability to scaffolding scenarios is reflected in:

Mechanical performance: The pipe's wall thickness deviation is ≤±0.05mm, ensuring uniform load-bearing capacity (each meter can bear a vertical load of 200kg). In the 2023 Baoding Affordable Housing Project, 2,500 tons of these pipes were used to build scaffolding for a 50,000㎡ construction area-no deformation or collapse occurred during the 6-month construction period.

Processing convenience: ERW pipes have smooth surfaces and no weld burrs, making them easy to cut, bend, and connect with fasteners. The construction team can process 100+ pipes per day, which is 3 times the processing efficiency of spiral pipes (which require grinding of spiral welds before processing).

Spiral Pipes' Inapplicability

Spiral pipes are completely unsuitable for scaffolding scenarios: their spiral welds have uneven stress distribution, and they are prone to cracking under lateral loads (such as wind pressure); moreover, their large diameters (≥800mm) and heavy weights make them impossible to use as scaffolding poles.