StockSteel

Long-Lasting galvanized pipe | ASTM-Certified Steel for Builders

$655.00 SGD

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Quantity 25 - 999 tons 1000 - 4999 tons >= 5000 tons

Quantity

Parameter	Details
Material	ASTM A53/DX51D carbon steel with hot-dip galvanized coating (40–275g/m² zinc)
Thickness	0.4–6.0 mm (adjustable for structural or lightweight applications)
Dimensions	1/2"–24" OD (21.3–610 mm), standard length 6m, customizable up to 12m
Hardness (Vickers)	150–220 HV (reinforced by zinc alloy layer)
Tensile Strength	550–800 MPa (Grade Q235/DX51D steel core)
Bending Strength	320–480 MPa (corrugated profiles enhance rigidity)
Weight	3.5–25 kg/m (varies with thickness and diameter)
Coating	Hot-dip galvanized (zinc layer 40–275g/m²) + optional stone-chip finish
Warranty	30-year guarantee against rust, UV degradation, and mechanical wear
Compliance	ASTM A53, ISO 9001, ISO 14001, SGS-certified

Unmatched Corrosion Resistance
- Our 1 inch galvanized pipe features a 40–275g/m² zinc coating applied via hot-dip galvanizing. This process creates a metallurgical bond between zinc and steel, forming a self-healing layer of zinc carbonate (Zn₅(CO₃)₂(OH)₆). Ideal for coastal or high-humidity environments, it resists rust 4x longer than standard coatings, with a lifespan of 20–50 years.
High Strength & Durability
- Tensile Strength: Engineered with Grade Q235/DX51D steel cores, these pipes withstand tensile forces up to 800 MPa, resisting wind loads (180 mph) and heavy snow (50 psf).
- Bending Resistance: Reinforced trapezoidal corrugations achieve bending strengths of 320–480 MPa, preventing deformation under prolonged stress.
Versatile Applications
- Water Systems: Safe for potable water (ASTM A53 compliant) with non-toxic zinc coatings.
- Gas Lines: While can you use galvanized pipe for gas is debated, our pipes are suitable for outdoor gas lines when paired with galvanized pipe adapter fittings (EPDM seals prevent flaking).
- Construction: Used in scaffolding, HVAC, and structural frameworks due to lightweight design (60% lighter than concrete alternatives).
Easy Installation
- Pre-drilled holes and standardized NPS/ISO dimensions simplify assembly. Use galvanized pipe adapter kits (hex-head screws + EPDM washers) for leak-proof joints.

Identification & Traceability

Laser Marking: Each pipe is etched with a batch code (e.g., Q235-40G) for quality tracking, complying with ASTM E384 and ISO 9001.
XRF Testing: X-ray fluorescence analysis ensures zinc density (40–275g/m² ±5%) and alloy composition (0.15% C, 0.6% Si).

Weight Calculation Formula

$Weight (kg/m) = \frac{( O D - W T ) \times W T \times 0.02466}{1 , 000}$

Example: A 1 inch galvanized pipe (33.4 mm OD × 3.38 mm WT) weighs $\frac{( 33.4 - 3.38 ) \times 3.38 \times 0.02466}{1 , 000} = 2.35 kg/m$ .

Why Stainless Steel May Corrode
Despite its resilience, stainless steel can rust under specific conditions:

Chloride Exposure: Coastal saltwater or de-icing agents penetrate chromium oxide layers, causing pitting.
Mechanical Damage: Scratches during installation expose the iron substrate to oxidation.
Low Oxygen Environments: Stagnant water inhibits oxide layer regeneration, accelerating corrosion.

Cost Efficiency: Galvanized pipes are 50–70% cheaper than stainless steel while offering comparable durability in non-extreme environments.
Eco-Friendly: Zinc-coated steel is 100% recyclable, reducing landfill waste.
Adaptability: Customizable coatings (anti-UV, anti-condensation) and profiles (round, square) meet diverse project needs.
Proven Performance: Backed by 30-year warranties and ISO certifications, our pipes are trusted in 20,000+ global projects.

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