The pre-galvanized welded steel pipe refers to welded tube which undergo degreasing, rust removal, phosphorization, and drying processes before galvanization. The treatments before galvanization allow the product to be conveniently plated with a zinc coating, and also ensure uniform coating thickness, strong coating adhesion, and improved corrosion resistance. The pre-galvanized welded tubes are widely used in heat, water, and natural gas supply systems, agricultural greenhouse construction, steel structure construction, as well as low and medium pressure piping system.

Our pre-galvanized welded steel pipe is made of superior quality steel materials, and the available steel type includes GR.B, Q195, Q235, and Q345B. The Q235 steel feature good elongation, tensile strength, tenacity, and castability, so welded pipes made of this material is easy for pressing and welding. The Q345B steel offers superior mechanical properties such as good plasticity, weldability, and low temperature resistance, so Q345B pre-galvanized tubes offer marvelous performance in -40℃ or lower temperature conditions.
In addition, the product can be manufactured with different specifications. To illustrate, we can make round, square and rectangular pipes with minimum wall thickness of 0.4mm. The zinc coating thickness is between 60g/m² and 120g/m², and the outside diameter ranges from 15mm to 168.3mm. Clients can choose an appropriate one according to the specific application demands.

Specifications of Galvanized Steel Pipe:

1) Size Range: 1/2'' - 6'' (21.3mm - 168.3mm)

Packaging of Galvanized Steel Pipe:

Shanghai Metal Corporation provides standard seaworthy packaging to worldwide customers, usually the tubes are packed in bundles, wrapped by plastic bag, fixed by steel strip, and then placed in the container with steel wire fixing. All these packing detail are ensuring your goods safe to your hand during the delivery, we also accept customization for your special requirements. Please feel free to contact us. 

1) Shanghai Metal Standard

2) Customization

Applications of Galvanized Steel Pipe:

1) Can be used for carrying water.

2) Commonly used as fencing, scaffolding frame, heating, ventilation and air conditioning (HVAC) on both commercial and residential areas; it can also be used in bridgework and business to make handrail and guardrail, because of its resistance to corrosion, and the strength and durability.

It costs more than black steel pipe because of the zinc coating and manufacturing process involved in producing galvanized pipe.

Because of its extremely rigid and strong, it has a lifespan of 40 years.