4 Inch Welded Galvanized Steel Pipe

The 4 inch galvanized welded steel pipe features outstanding anti-rust, anti-corrosion and pressure-resistant performance. The thick and uniform zinc coating effectively isolates air and moisture, greatly extending the service life of the pipe in outdoor, humid and harsh industrial environments. This 4" GI welded steel pipe is easy to process and install, which can be cut, bent, threaded and grooved according to customer project requirements.

Widely applicable in water supply & drainage systems, fire fighting pipelines, municipal construction, building steel structures, fence manufacturing, agricultural irrigation and industrial fluid transmission fields. As a professional galvanized steel pipe manufacturer, we provide custom size, custom zinc layer and custom processing services, support sample testing and bulk wholesale, and guarantee high quality, competitive factory price and timely delivery for all global buyers.

4 Inch Welded Galvanized Steel Pipe, 4 Inch Hot Dipped Galvanized Welded Steel Pipe, 4" GI Welded Steel Pipe.

ASTM A53, ASTM A106, BS 1387, GB/T 3091, ISO 65, DIN 2448 international standard.

Q195, Q215, Q235B, Q345B carbon steel, low carbon steel raw material, high structural stability.

Nominal Diameter: 4 inch (114.3mm).

Wall Thickness: 1.5mm - 6.0mm customizable.

Outer Diameter: 114.3mm (standard tolerance ±0.5mm).

Length: 6m, 12m fixed length, 1-12m custom cut length.

High-frequency welded technology, seamless welding line, smooth weld seam. Adopts hot-dipped galvanized process after pipe forming, integral galvanized treatment, no dead angle anti-corrosion coating.

Zinc coating weight: 60g/m² - 280g/m² optional.

Uniform zinc layer, strong adhesion, not easy to peel off, excellent anti-rust and anti-corrosion performance.

Hot dipped galvanized (HDG), pre-galvanized available. Smooth and bright surface, no rust, no burr, uniform coating, oxidation resistance.

1. Excellent anti-corrosion and anti-rust performance, long service life up to 30 years in outdoor environment.

2. High welding firmness, uniform pipe wall thickness, strong pressure resistance and impact resistance.

3. Standard size, easy cutting, bending, welding and installation.

4. Factory direct price, no middleman, stable supply and fast delivery.

5. Environmental protection zinc coating, no pollution, compliant with international export standards.

6. Custom processing service (threading, grooving, cutting, bending) supported.

Widely used in construction engineering, water supply and drainage pipeline system, fire protection pipeline, municipal engineering, fence and guardrail production, agricultural irrigation pipeline, industrial fluid transmission, steel structure support, outdoor engineering and other fields

Custom cutting, pipe threading, grooving, bending, end flattening, anti-corrosion secondary treatment, packaging customization

Standard export seaworthy packaging: bundled with steel strips, covered with waterproof woven bag.

Port of shipment: Tianjin, Qingdao, Shanghai. Support sea freight, air freight, express delivery, full container and LCL shipment

100% factory inspection, size tolerance detection, zinc layer thickness test, pressure resistance test, welding quality inspection. Provide factory test certificate, ISO certification, third-party inspection report.

Minimum Order Quantity: 1 ton. Annual supply capacity: 500,000 tons. Support bulk order and sample order, fast delivery within 7-15 working days

FOB, CIF, CFR, EXW, DDP acceptable. Support flexible payment terms: T/T, L/C, Western Union.

Hot Tags: 4 inch welded galvanized steel pipe, China 4 inch welded galvanized steel pipe manufacturers, suppliers, factory, galvanized black pipe, galvanized brass pipe, galvanized gray pipe, Galvanized Rectangular Pipe, Galvanized Square Pipe, Thread Galvanized Pipe