Product Overview
Galvanized pipe is produced from ERW high frequency welded pipe that is pickled and then immersed in molten zinc, so both the outside and the bore are coated at 200-500 g/m2 – which is why it can carry potable water. The weld is checked inline by eddy current and every length is hydrostatically or pneumatically tested after galvanizing. Ends can be threaded and supplied with galvanized couplings so the pipe screws together on site with no welding.
Specifications
| Parameter | Value |
|---|---|
| Nominal size | DN15 – DN200 (1/2 to 8 inch) |
| Outside diameter | 21.3 – 219.1 mm |
| Wall thickness | 2.0 – 6.0 mm |
| Zinc coating | 200 – 500 g/m2 (inside and out) |
| Grade | Q235B / GB/T 3091 |
| Tensile strength | min 375 MPa |
| Hydrostatic test | 5.0 MPa held for 5 seconds |
| Standard length | 6 m / 5.8 m |
| End finish | Plain / threaded and coupled / bevelled |
| Surface | Bright galvanized / passivated |
Applications
Used for municipal and plant water supply and drainage lines, fire sprinkler pipework, greenhouse irrigation mains, scaffold standards and ledgers, highway guardrail posts and cable conduit. Municipal and irrigation projects in the Middle East and Africa buy DN25 to DN100 threaded galvanized pipe all year round.
Packing / Delivery / Payment
Packed bare in hexagonal bundles with plastic caps on threaded ends, 1-3 tons per bundle; a 20GP holds about 22-25 tons. Stock ships in 7-15 days and production orders in 25-30 days. Payment by L/C at sight or T/T with 30% deposit. Mill certificate, zinc coating and pressure test reports, SGS inspection, packing list and Certificate of Origin are supplied.