Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of erw water supply and drainage pipes in China. Welcome to buy discount erw water supply and drainage pipes made in China here from our factory. Quality products and low price are available.
Product introduction
Product Description
ERW Water Supply And Drainage Pipes are high‑quality straight‑seam electric resistance welded steel pipes, specifically engineered for municipal water supply, building drainage, and general‑purpose fluid conveyance projects. Manufactured via high‑frequency ERW welding and compliant with national and international standards, these pipes feature smooth inner/outer surfaces, uniform wall thickness, excellent structural rigidity, and reliable pressure resistance. They are designed for low‑to‑medium pressure potable water, industrial water, wastewater, and non‑corrosive liquid transport systems.
All ERW water supply and drainage pipes undergo 100% hydrostatic testing and full weld non‑destructive inspection to ensure no leakage, consistent weld quality, and long‑term stable performance. Available in a wide range of diameters and wall thicknesses, they are the most widely used cost‑effective steel pipe for municipal water networks, construction plumbing, and drainage engineering.
Basic Product Specifications
Product Name: ERW Water Supply And Drainage Pipes
Executive Standards: GB/T 3091‑2015, ASTM A53 Grade B, EN 10217‑1, API 5L PSL1
Outer Diameter Range: 21.3mm – 610mm (custom sizes available)
Wall Thickness Range: 1.5mm – 20mm (Schedule 40 / Schedule 80 optional)
Steel Grade: Q195, Q215, Q235B, Q355B, API 5L Grade B (L245)
Production Process: High‑frequency Electric Resistance Welding (ERW), straight‑seam welded, integral forming
Standard Length: 6m, 9m, 12m; custom fixed lengths available
Applicable Media: Potable water, industrial water, wastewater, rainwater, non‑corrosive liquids
Working Pressure: ≤1.6MPa (suitable for low‑to‑medium pressure water systems)
Pipe End Treatment: Plain ends / beveled ends, plastic end caps
Surface Treatment: Black oiled, hot‑dip galvanized, 3PE/2PE anti‑corrosion, epoxy coating optional
Core Features: High structural strength, smooth bore, easy installation, leak‑proof, cost‑effective, long service life
Core Product Advantages
Superior Structural Strength & Pressure Resistance
Made from high‑grade carbon steel, ERW water pipes offer uniform metallurgical structure, good toughness, and high compressive strength. They withstand burial loads, external impacts, and operating pressure, ensuring structural integrity in both above‑ground and underground installations.
Smooth Inner Bore & Efficient Flow
Precision manufacturing results in a smooth, burr‑free inner surface that minimizes friction loss, reduces pumping energy consumption, and prevents sediment buildup. Ideal for long‑distance water supply and large‑flow drainage systems.
Excellent Weld Integrity & Zero Leakage
High‑frequency ERW welding creates a metallurgically bonded weld with the pipe body, free of gaps, cracks, or inclusions. Every pipe is hydrostatically tested, ensuring 100% leak‑proof performance critical for water supply and drainage safety.
Wide Size Range & High Compatibility
Available in 21.3mm to 610mm diameters and multiple wall thicknesses, matching all standard fittings, valves, flanges, and plumbing components. High interchangeability simplifies design and construction.
Flexible Anti‑Corrosion Options
Multiple surface treatments (galvanized, 3PE, epoxy) provide excellent corrosion resistance for potable water, buried drainage, and harsh environments, extending service life significantly.
Cost‑Effective & Easy Installation
Compared with seamless pipes, ERW pipes offer lower cost while meeting performance requirements. Lightweight and easy to cut, weld, and install, they reduce labor and project costs.
Dimensional Tolerance Standard
|
Inspection Item |
Standard Tolerance |
|
Outer Diameter |
±0.75% (OD ≤ 168.3mm); ±1.0% (OD > 168.3mm) |
|
Wall Thickness |
+12% / −10% |
|
Straightness |
≤1.5mm per meter |
|
Out‑of‑Roundness |
≤1.0% of OD |
|
Length |
+100mm / −0mm |
Mechanical Properties
|
Steel Grade |
Min. Yield Strength |
Tensile Strength |
Min. Elongation |
Hydrostatic Test |
|
Q235B |
≥235MPa |
375–500MPa |
≥26% |
100% full‑length tested |
|
Q355B |
≥355MPa |
470–630MPa |
≥21% |
100% full‑length tested |
|
API 5L Grade B (L245) |
≥245MPa |
415–655MPa |
≥20% |
100% full‑length tested |
Note: All pipes pass flattening, bending, and impact tests to meet water supply and drainage engineering standards.
Manufacturing Process
Raw Material Inspection: Qualified carbon steel coils with verified chemical and mechanical properties.
Slitting & Shearing: Precision slitting to required widths; edge conditioning for welding.
Continuous Forming: Multi‑roll forming into cylindrical shape with uniform roundness.
High‑Frequency Welding: Automatic ERW welding with heat‑affected zone normalization.
Deburring: Internal and external weld flash removal for smooth surfaces.
Sizing & Straightening: Precision sizing and straightening to ensure dimensional accuracy.
Fixed‑Length Cutting: Clean, burr‑free cuts per customer requirements.
Full Inspection: Hydrostatic test, ultrasonic weld inspection, dimensional check.
Surface Treatment & Marking: Oiling/galvanizing; permanent marking (size, grade, standard, batch).
Packaging: Bundled with steel straps, end caps, PE wrapping for safe transport.
Main Application Scope
Municipal water supply trunk and branch networks
Building plumbing, domestic water, and fire protection systems
Industrial process water, cooling water, and wastewater pipelines
Urban drainage, rainwater, and sewage conveyance projects
Agricultural irrigation and water conservancy pipelines
HVAC and chilled water systems
Quality Inspection & Certification
Compliant with GB/T 3091, ASTM A53, EN 10217‑1, API 5L standards
100% hydrostatic test and ultrasonic weld inspection
Third‑party inspection available (SGS, BV, TUV)
ISO 9001 quality management system certified
Complete MTR (Material Test Report) provided
Bending, flattening, and impact resistance tests passed
Packaging & Delivery
Packaging: Anti‑rust oil, PE film wrap, steel strip bundling, plastic end caps
Marking: Size, steel grade, standard, batch number, production date
Trade Terms: FOB, CIF, CFR, DAP
Shipping Ports: Tianjin, Qingdao, Shanghai, Ningbo
Customization: Fixed lengths, special coatings, threaded ends, couplings
Why Choose Our ERW Water Supply & Drainage Pipes
Proven Water‑Grade Quality: Strict hydrostatic testing, zero leakage, compliant with drinking water standards
Full Size Availability: 21.3mm–610mm diameters, matching all project needs
Reliable Weld Performance: Integrated weld, high strength, long service life
Cost‑Effective Solution: Factory direct pricing, low maintenance, ideal for large‑scale projects
Corrosion Protection Options: Galvanized, 3PE, epoxy coatings for any environment
Global Engineering Experience: Supplied to municipal and industrial projects worldwide
Contact Us
For factory quotations, detailed technical parameters, bulk order discounts, and delivery arrangements of ERW Water Supply And Drainage Pipes, please contact our professional sales team. We provide standard and customized ERW steel pipes for municipal water supply, drainage, and industrial fluid conveyance projects globally.
About us
Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.
Packaging, transportation and delivery
Packaging, transportation and delivery
At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.
We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.
For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.
Strict quality control
1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.
2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.
3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.
4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.
Certifications
API 2B
API 5L
GOST
ISO 9001
EN 10219
EN 10210
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