Technical Specifications
| Parameter | Specifications / Details |
| Product Category | Hot-Dip Galvanized (HDG) & Pre-Galvanized Steel Pipes |
| Steel Grade | Q195, Q235, Q355, Grade A, Grade B, S235JR, S355JR, STK400, STK500 |
| Manufacturing Standards | ASTM A53, ASTM A500, EN 10219, EN 10255, JIS G3444, JIS G3445, BS 1387 |
| Outer Diameter (OD) | Round: 21.3 mm – 219.1 mm |
| Wall Thickness (WT) | 0.8 mm – 10.0 mm |
| Zinc Coating Mass | Pre-galvanized: 60 – 120 $g/m^2$ |
| Length | 5.8m, 6.0m, 12.0m, or customized cut-to-length services |
| End Protections | Plain ends, bevelled ends, threaded and coupled (T&C) with plastic caps |
State-of-the-art Production Technology from Vietnam
Efreso’s galvanized steel pipes are manufactured at premier, high-tech vietnam steel mills equipped with world-leading European technology from Danieli (Italy) and SMS Group (Germany). Our fully automated hot-dip galvanizing lines and high-frequency induction welding (HFIW) systems ensure flawless weld seam integrity, precise concentricity, and uniform zinc coating thickness across every batch.
As a forward-thinking vietnam steel exporter, we prioritize eco-conscious manufacturing. Our production facilities utilize closed-loop energy circulation and advanced water treatment systems, aligning with global green steel vietnam initiatives. Our processes are meticulously structured for CBAM readiness, ensuring that European and North American buyers can confidently source carbon-tracked, low-emission structural steel without environmental compliance risks.
Why Choose Efreso's Galvanized Steel Pipes?
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Exceptional Corrosion Resistance: The heavy, uniform zinc coating (up to 600 $g/m^2$) forms a highly durable metallurgical barrier, protecting the underlying steel from rust and atmospheric degradation even in harsh marine or industrial environments.
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Flawless Weld & Formability: Produced using advanced high-frequency welding technology, our pipes offer outstanding bending, flattening, and structural formability without zinc flaking or cracking.
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Precise Dimensional Tolerances: Strict adherence to international wall thickness and outer diameter tolerances ensures seamless integration with standard couplers, fittings, and welding procedures.
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Custom Coating & Finishing: Available in hot-dip galvanized, pre-galvanized, or with additional protective layers (such as anti-rust oil or passivating varnishes) customized to your specific environmental conditions.
Strategic Sourcing Advantages from Vietnam
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Tariff & Duty Savings (0% Preferential Tariffs): Bypass heavy trade barriers. By sourcing from Vietnam, buyers in Europe, the UK, Canada, Australia, and ASEAN can leverage preferential import tariffs (up to 0%) under active Free Trade Agreements such as EVFTA, CPTPP, UKVFTA, and RCEP. We provide complete, fully compliant Certificates of Origin (C/O Form EUR.1, Form CPTPP, Form D, etc.).
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Anti-Dumping Mitigation: Our galvanized steel pipes are manufactured utilizing 100% Vietnamese local hot-rolled/cold-rolled steel substrates, offering a strategic alternative to mitigate high anti-dumping duties and trade defense measures imposed on other regional exporters.
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Logistics Efficiency & Deep-Sea Port Access: Our primary production hubs are strategically located near major Vietnamese deep-water ports, including Hai Phong, Da Nang, and Cai Mep - Thi Vai. This proximity guarantees reliable vessel space booking, rapid transit times, and highly competitive ocean freight rates to major global destinations.
Key Applications & Industries
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Construction & Infrastructure: Structural scaffolding, structural framing, bridge railings, fence posts, and safety barriers.
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Water & Fluid Transmission: Low-pressure fluid transportation, fire sprinkler networks, and agricultural irrigation systems.
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HVAC & Industrial Engineering: HVAC ducting supports, mechanical tubing, electrical conduits, and heavy equipment frames.
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Solar Mounting Systems: Corrosion-resistant ground-mounted structures and solar tracker torque tubes exposed to weathering.
Packaging, Loading & Delivery Details
Efreso is committed to ensuring that our industrial steel products arrive at your project site or warehouse in pristine condition, regardless of transit distance.
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Supply Ability: 35,000 Metric Tons per Month.
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Minimum Order Quantity (MOQ): 25 Metric Tons (1 x 20GP FCL container).
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Export Packaging: Hexagonal seaworthy bundles secured with high-tensile steel straps, fitted with lifting slings, and wrapped in moisture-resistant PVC or waterproof woven sheets. Pipe ends can be protected with customized plastic caps.
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Loading & Logistics: Stuffed professionally into 20ft/40ft containers or loaded as bulk cargo for high-volume orders.
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Payment Terms: Irrevocable L/C at sight, or T/T (Telegraphic Transfer) with agreed deposit terms.
Frequently Asked Questions
Q1: Can we arrange third-party inspections (SGS, Bureau Veritas) before shipment?
Absolutely. Efreso Welcomes and regularly accommodates third-party inspection (TPI) agencies such as SGS, Bureau Veritas, or Intertek. We provide full mill test certificates (MTC) in accordance with EN 10204 3.1 and allow inspectors full access to oversee dimensions, zinc coating thickness testing, chemical composition analysis, and final packaging.
Q2: What is the typical lead time for an export order?
For standard dimensions and grades, our typical production lead time is 30 to 45 days from the date of receiving a confirmed L/C or deposit. Transshipment times depend on the destination port, but direct sea shipping from our deep-water ports ensures minimal transit delay.
Q3: How do we verify that our order qualifies for 0% tariffs under EVFTA or CPTPP?
We work closely with the Vietnamese Ministry of Industry and Trade (MoIT) to issue valid and certified Certificates of Origin (C/O). Prior to shipment, we will provide you with draft copies of all shipping documentation (including C/O, commercial invoice, and packing list) so your local customs broker can pre-verify the tariff exemptions in your destination country.
