Hot Dip Galvanized Steel Pipe ASTM A53 Zinc Coated GI Pipe for Construction and Water Transport
In the construction of industrial and mining enterprises, galvanized steel pipes are used for liquid transportation: water supply and drainage (including industrial and civil cooling water).
| Standard | ASTM A53 / A53M | Wall Thickness | Sch 10, Sch 40, Sch 80, STD, XS, XXS |
| Type | Type F (Furnace Welded), Type E (ERW), Type S (Seamless) | Length | 5.8m, 6m, 12m or Custom |
| Grade | Grade A, Grade B | End Type | Plain End / Beveled End / Threaded with Coupling |
| Manufacturing Process | Seamless / Electric Resistance Welded (ERW) | Zinc Coating | Typically 400–600 g/m² (customizable) |
| Surface Treatment | Hot-Dip Galvanized | Inspection | Hydrostatic Test, NDT, Dimension Inspection |
| Outside Diameter | 1/8" – 26" (10.3mm – 660mm) | 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 |
1.Building structures and systems: Used in building frames, column, and support systems. High strength and excellent corrosion resistance for long-life stability of the structure.
2.Water Supply & Drainage Systems: Used for transporting water in city and industrial pipelines. The zinc plate prevents the rust & prolongs the life-span.
3.Scaffolding Systems: It is commonly seen in a variety of applications, from temporary construction scaffolds. It has a great capacity for load-bearing and security for working at height.
4.Fencing & Outdoor Structures: It is also suitable for fence panels, handrails and greenhouse frames. Good performance outdoors, high weather resistance and anti-corrosion.
The thickness of zinc coats is 30g to 550g. It can be provided: hot-dip galvanizing steel pipe, electro-galvanizing steel pipe, pre-galvanizing steel pipe. After they receive the inspection reports, zinc coating production support is available. Thickness makes to order for tone contract specification. The tolerance for thickness of our process is ±0.01mm.V. Laser-cut nozzles guarantee clean and polished results Straight seam welded pipe with galvanized surface. Cutting lengths are 6-12 meters, with standard US lengths of 20ft and 40ft available. Or we can manufacture the product length such as 13 meters. With a warehouse capacity of production over 5000 tons every day, we can assure you the best delivery speed and reasonable price.
Q1: What is Hot Dip Galvanized Steel Pipe?
A: It is a steel pipe coated with zinc by hot-dip galvanizing to improve corrosion resistance and extend service life.
Q2: What is the main advantage of galvanizing?
A: The zinc coating provides strong anti-rust protection, especially in outdoor and humid environments.
Q3: What types of steel pipe can be galvanized?
A: Both seamless and welded steel pipes can be hot-dip galvanized.
Q4: What are the main applications?
A: Construction, scaffolding, water pipelines, fencing, and industrial structures.
Q5: Is customization available?
A: Yes, size, thickness, length, and zinc coating can be customized.
Q6: What inspection documents are provided?
A: Mill Test Certificate (MTC), packing list, invoice, and third-party inspection if required.












