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Product Specifications

Comprehensive technical details for industrial buyers

Mechanical Properties

Tensile Strength

Galvanized pipes exhibit tensile strengths ranging from 315 MPa (Q195) to 630 MPa (Q345), ensuring structural integrity under high-pressure applications. For example, Q235-grade pipes achieve tensile strengths of 375–500 MPa, ideal for construction frameworks and fluid transport systems .

Bending Strength

The bending strength of galvanized pipes is approximately 60% of tensile strength, allowing flexibility in shaping without compromising durability. This property is critical for HVAC ducting, handrails, and agricultural equipment requiring precise bends .

Identification & Standards

Marking Methods

• ASTM A53/A106: Standard for seamless/welded galvanized steel pipes .
• EN 10255: European specifications for dimensional tolerances and zinc coating .
• JIS G3466: Japanese standards for structural applications .
• Grade Codes: Markings like "Q235" or "S355" are laser-etched for traceability .

Weight Calculation

Formula

Weight per meter (kg/m) = (Outer Diameter – Wall Thickness) × Wall Thickness × 0.02466
Example: For a 50mm OD pipe with 3mm thickness:
(50 – 3) × 3 × 0.02466 = 3.48 kg/m.

Custom Shapes

• Round Pipes: Use the standard formula above.
• Square/Rectangular Pipes: Weight = (4 × Wall Thickness × (Side Length – Wall Thickness)) × 0.00785.

Stainless Steel Corrosion: Causes & Prevention

Why Does Stainless Steel Rust?

1. Surface Contamination: Oil, grease, or iron particles from tools can break the passive chromium oxide layer, leading to localized rust .
2. Chloride Exposure: Saltwater or de-icing agents trigger pitting corrosion, especially in coastal or industrial environments .
3. Mechanical Damage: Scratches or weld splatter disrupt the protective layer, exposing raw steel to oxidation .
4. Improper Heat Treatment: Incorrect annealing or quenching reduces corrosion resistance .

Key Comparisons & Risks

copper vs galvanized pipe

• Durability: Galvanized pipes resist corrosion better than copper in alkaline environments but degrade faster in acidic conditions .
• Cost: Copper is 3–5× more expensive, making galvanized pipes economical for large-scale projects .
• Applications: Copper is preferred for drinking water due to antimicrobial properties, while galvanized suits industrial uses .

dangers of galvanized water pipes

• Zinc Leaching: Over time, zinc coatings corrode, releasing heavy metals into water, posing health risks .
• Lead Contamination: Older galvanized pipes may contain lead solder joints or traces from recycled materials, requiring testing .
• Reduced Flow: Internal rust buildup restricts water flow and increases pressure on pumps.

do galvanized pipes have lead in them

While modern galvanizing processes use lead-free zinc, pre-1980s pipes might contain lead residues from manufacturing or soldering. Regular water testing is advised for older installations.

Why Choose Our Stainless Steel Products?

1. Superior Corrosion Resistance: Our stainless steel pipes (304/316L grades) withstand harsh chemicals and marine environments, outperforming galvanized pipes in longevity .
2. Certified Quality: ISO 9001, CE, and SGS certifications ensure compliance with global standards .
3. Custom Solutions: Tailored dimensions, surface finishes (mirror, brushed), and alloy compositions (duplex, superaustenitic) for specialized needs .
4. Eco-Friendly: 100% recyclable with no toxic leaching, aligning with sustainable construction practices .
5. Technical Support: Free consultation on material selection, welding techniques, and corrosion prevention .