PRODUCTS

Product Introduction

Q235 Galvanized Pipe: An economical galvanized steel pipe suitable for general construction and low-pressure fluid transport.

Designed for non-extreme environments such as building scaffolding, water supply systems, and guardrails, it maintains basic structural strength while providing effective corrosion protection through the galvanizing process.

Q235 galvanized pipe is made from carbon structural steel and treated with a hot-dip galvanizing process. The zinc layer forms a metallurgical bond with the steel base, providing long-lasting cathodic protection. This product combines the strength of steel with the corrosion resistance of zinc, making it one of the most widely used pipe materials in the construction, municipal administration, and agricultural sectors.

Certifications and Key Advantages

GB/T 3091 and ASTM A53 certified: Complies with ISO 65 standards.

Cost Advantage: Over 60% lower cost than stainless steel.

Customized Sizes: Outer Diameter 10-500mm (±1%), Wall Thickness 0.8-20mm.

Minimum Order Quantity 1 ton: Available in hot-dip galvanized or electroplated galvanized finishes.

Technical SpecificationsMechanical Properties

Material Composition:

Carbon (C): 0.12-0.20%

Manganese (Mn): 0.30-0.65%

Silicon (Si): ≤0.30%

Phosphorus (P): ≤0.045%

Sulfur (S): ≤0.045%

Galvanizing Process Options:

Hot-dip galvanizing: 40-120μm zinc layer, high corrosion resistance

Electrogalvanizing: 5-15μm zinc layer, excellent surface smoothness

Dimensional Tolerances

Applications

Building Structures: Scaffolding pipes, building formwork supports, steel structure accessories

Public Utilities: Water supply pipes, fire protection pipes, gas pipelines

Agricultural Applications: Greenhouse frames, irrigation systems, livestock pens

Municipal Engineering: Streetlight poles, traffic sign poles, guardrail posts

Industrial Applications: Ventilation ducts, cable protection pipes, equipment supports

Processing Guidelines

Cutting: Abrasive cutting or band saw cutting, with rust-proof treatment applied to the cut surface.

Welding: Galvanized layer polished and welded, using J422 welding rods.

Bending: Minimum cold bend radius = 4 times the pipe diameter.

Threading: Pipe threads conforming to GB/T 7306.

Quality Assurance

Zinc Coating Test: Zinc Coating Weight ≥ 275g/m² (ISO 1461)

Uniformity Test: No iron visible after 4 passes of the copper sulfate test

Adhesion Test: No peeling of the zinc coating after hammer test

Hydraulic Pressure Test: No leakage after 5 seconds at 2.5MPa

Certifications: ISO 9001:2015, CE, Drinking Water Safety Certification

Competitive Advantages

Economical and Practical: Optimal cost-effectiveness in standard environments

Corrosion Resistance: 15-25 years of service life after galvanizing

Proven Process: Stable production process, reliable quality

Fast Delivery: 5-10 days (Minimum Order Quantity 1 ton)

Logistics and Compliance

Standard Packaging: Strapping with strapping, anti-rust paper, and labeling

Special Requirements: Cut-to-length and pipe end protection available

Compliance Certification: Meets sanitary standards for materials in contact with drinking water

Comparative Analysis

Chuang Fu Yuan Steel Co., Ltd. is a multi-ISO-certified steel manufacturer specializing in carbon, stainless, and galvanized steel. We offer competitive pricing and meet ASTM/JIS standards. Receive instant quotes for bulk orders, and we offer global shipping support.

Tel: +86 18963548770

Email: info@cfysteel.com

WhatsApp: +86 18963548770

WeChat: +86 18963548770