Leading Steel Pipe & Fittings Manufacturer — Sino East Steel Group
High-quality galvanized steel pipes with superior zinc coating protection. Available in hot-dip galvanized (HDG) and pre-galvanized finishes. Compliant with ASTM A53, ASTM A123, BS 1387, and EN 10255. Ideal for water supply, scaffolding, structural, and general construction.
Comprehensive range of hot-dip and pre-galvanized steel pipes
Technical parameters for hot-dip and pre-galvanized steel pipes
| Parameter | Specification |
|---|---|
| Pipe Type | Hot-Dip Galvanized (HDG) & Pre-Galvanized |
| Size Range (OD) | 21.3mm – 219mm (1/2″ – 8″) |
| Wall Thickness | 1.5mm – 8.0mm (SCH 10 – SCH 80) |
| HDG Zinc Coating | 200 – 600 g/m² (ASTM A123 / ISO 1461) |
| Pre-Galv Zinc Coating | Z80 – Z275 (80 – 275 g/m²) |
| Pipe Standards | ASTM A53 Gr.A/B, ASTM A795, BS 1387, EN 10255, JIS G3444 |
| Galvanizing Standards | ASTM A123, ASTM A153, ISO 1461, BS EN ISO 1461 |
| Steel Grade | Q195, Q235, Q345, S235, S355, Gr.A, Gr.B |
| End Finish | Plain, Threaded (NPT/BSPT), Grooved, Beveled |
| Length | 5.8m, 6.0m, 6.4m, 11.8m, 12m, or custom cut |
| Surface Treatment | Passivation, chromate-free, oiled or dry |
| Application | Water, scaffolding, structure, fencing, greenhouse, fire protection |
| Corrosion Life (Outdoor) | 34 – 70+ years (environment-dependent) |
Why galvanized steel pipe is the construction industry standard
Zinc coating provides sacrificial cathodic protection — zinc corrodes preferentially, protecting the underlying steel for decades.
Hot-dip process coats internal and external surfaces completely, including threads, weld seams, and crevices for total protection.
Galvanized pipes require no painting, coating, or maintenance throughout their service life, dramatically reducing lifecycle costs.
Hot-dip galvanizing has been used for over 150 years. It is a well-understood, highly reliable, and predictable corrosion protection method.
Lower initial cost than stainless steel with comparable outdoor corrosion resistance. Lowest lifetime cost of any corrosion protection system.
Galvanized pipes arrive on site ready for immediate installation — no surface preparation, painting, or curing required.
Where galvanized steel pipes deliver reliable performance
Municipal water distribution, plumbing risers, fire sprinkler systems, and rural water supply networks.
BS 1139/EN 39 compliant scaffolding tubes for safe, durable temporary access structures in construction projects.
Columns, beams, and trusses in steel-framed buildings, warehouses, and industrial sheds requiring corrosion protection.
GI pipes for chain-link fencing posts, gates, boundary walls, security barriers, and livestock enclosures.
Galvanized pipes for greenhouse frames, hoops, and support structures — corrosion-resistant in high-humidity environments.
GI pipe used in guardrails, crash barriers, signpost structures, and traffic management infrastructure.
Galvanized pipes for ventilation ducts, chimney flues, exhaust systems, and air handling applications.
UL-listed and FM-approved galvanized fire sprinkler pipes for commercial, industrial, and residential fire safety systems.
Common questions about galvanized steel pipes
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