Wholesale ASTM A53 Hot Dip GI Galvanized Steel Pipe
Galvanized steel pipe is the workhorse for liquid transportation in industrial and mining construction — covering water supply and drainage, including industrial and civil cooling water.
| Item | Description |
| Standard | ASTM A53 / A53M |
| Type | Type F (Furnace Welded), Type E (ERW), Type S (Seamless) |
| Grade | Grade A, Grade B |
| Manufacturing Process | Seamless / Electric Resistance Welded (ERW) |
| Surface Treatment | Hot-Dip Galvanized |
| Outside Diameter | 1/8" – 26" (10.3mm – 660mm) |
| Wall Thickness | Sch 10, Sch 40, Sch 80, STD, XS, XXS |
| Length | 5.8m, 6m, 12m or Custom |
| End Type | Plain End / Beveled End / Threaded with Coupling |
| Zinc Coating | Typically 400–600 g/m² (customizable) |
| Inspection | Hydrostatic Test, NDT, Dimension Inspection |
| Certification | Mill Test Certificate (MTC), Third-party inspection available |
| Grade | Yield Strength (min) | Tensile Strength (min) |
| Grade A | 205 MPa | 330 MPa |
| Grade B | 240 MPa | 415 MPa |
| Grade | C | Mn | P | S | Cu* |
| Grade A | 0.25 | 0.95 | 0.05 | 0.045 | 0.4 |
| Grade B | 0.3 | 1.2 | 0.05 | 0.045 | 0.4 |
Structural Steel Solutions
A53 galvanized pipe carries load-bearing frames in warehouses, factories, commercial and agricultural buildings — especially prefab steel structures in the U.S.
Tensile strength up to 415 MPa (Grade B)
Welds and works easily
Zinc coating, 20+ year service life
Columns, supports, secondary structures
System Scaffolding
Strong, durable, and happy outdoors — threaded ends assemble fast, and the pipe takes repeated reuse on high-rise, bridge, and civil jobs.
High load-bearing capacity
Rust-resistant, reusable outdoors
Low maintenance
Gas and Water Piping
A53 galvanized pipe holds pressure and shrugs off moisture in low-pressure water and gas lines. Threaded or welded joints install fast — a staple in municipal, residential, and small commercial work, plus building supply/drainage and compressed air.
Strong internal pressure resistance
Rust-proof coating
Fast threaded or welded installation
Fire Protection Systems
Royal Steel's galvanized pipe is a go-to for fire sprinkler and extinguishing systems — pressure-rated, corrosion-resistant, and compatible with threaded and grooved fittings, meeting fire-safety rules for warehouses, malls, and factories.
High pressure resistance
Threaded and grooved connections
Meets building fire-safety requirements
Mechanical and Industrial Piping
For plant and factory use, A53 galvanized pipe carries air, water, and other non-corrosive fluids (low-pressure only). Typical jobs:
Compressed air lines
Cooling water circulation
Equipment support and mechanical connection piping
Electrical Conduit Systems
It also works as electrical conduit — fire-resistant metal that protects cables and holds up indoors or out, in power plants, factories, roads, and bridges.
Mechanical protection for cables
Fire-resistant
Corrosion-resistant for long-term safety
1. What is ASTM A53 galvanized steel pipe?
ASTM A53 galvanized pipe is carbon steel pipe made to ASTM A53 requirements, then coated with zinc for corrosion resistance. You'll see it most in construction, fencing, water systems, and industrial work.
2. What sizes are available?
We supply galvanized pipe across a wide range of outside diameters, wall thicknesses, and lengths. Schedule 40 and other schedules are available to match your project.
3. Is the pipe hot-dip galvanized?
Yes. Hot-dip galvanizing is our standard option for extra corrosion protection. Coating requirements can be set to the applicable standard or your own spec.
4. What zinc coating options do you offer?
Coating weight and thickness follow the specification you need — we'll match the coating to the application, environment, and corrosion resistance required.
5. Can you provide ASTM certificates and inspection documents?
Yes. Material test certificates, inspection reports, dimensional records, and other quality documents come with the order, as your project requires.
6. Can the pipe be customized?
Yes — diameter, wall thickness, length, zinc coating, threading, grooving, end finish, marking, and export packaging can all be customized.
7. What's the MOQ and price?
MOQ and price depend on size, wall thickness, steel grade, zinc coating, and order quantity. Send us your requirements and we'll come back with a competitive quote.
8. How do you ship to North America?
We ship by container from major Chinese ports to destinations across the U.S., Canada, and Mexico — with export packaging, container loading, shipping documentation, and common trade terms (FOB, CFR, CIF) all handled.
ROYAL GROUP
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service












