Galvanized Steel Pipe knowledge

galvanized steel pipe full knowledge

Galvanized pipe, also known as galvanized steel pipe, hot dip galvanized and electrogalvanized two, hot galvanized galvanized layer thickness, with uniform coating, strong adhesion, long life and other advantages. Zinc electroplating has a low cost, the surface is not very smooth, and its own corrosion resistance is much poorer than hot dip galvanized pipe.

The galvanized steel pipes are widely used in construction, machinery, coal, chemical, electric power, railway vehicles, automotive industry, roads, Bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery manufacturing industry.

Product Name	galvanized steel pipe
Size	OD:	1/2~16”(21 TO 406mm)
	Thickness:	1.2-30mm.SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100 SCH120, SCH160, XS, XXS
	Length:	3/4/5.8/6/8/9/11.8/12m and other size according to the contract
Steel material	10#, 20#, 45#,16Mn,Q345,GR.B, ST35 ,ST42,ST37,ST45,ST52
Standard	ASTM-A53,BS1387-1985,GB/T3091,EN39,G3444
The Zinc layer	pre-galvanized (30-50g/m2);hot dipped galvanized(200-300g/m2,about 30-40um)
Ends	Plain\Beveled\Thread with Coupling or cap
Surface	pre-galvanized or hot dipped galvanized
Package	Normal Packing:In Bundles or In Bulks or waterproof package Special Packing:Plastic End or Knitting Bags or Packing according
Inspection	Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing .
Technique	Cold drawn/Hot Rolled/ERW/LSAW /galvanized
Type	Seamless or welded
Date of Delivery	15-30 days after payment
Others	We also supply pipe fittings for example screws and flange Our products are high quality but low price. Wish you contact us.

classification

Galvanized steel pipe is divided into cold-galvanized steel pipe and hot-dip galvanized steel pipe, the former has been banned, and the latter is also advocated temporarily by the state.

The galvanized steel pipe base body and the molten plating solution undergo complex physical and chemical reactions to form a zinc-iron alloy layer having a corrosion-resistant and tight structure. The alloy layer is integrated with the pure zinc layer and the steel pipe base body. Therefore, its corrosion resistance is strong.The zinc layer of the cold galvanized steel pipe is a plating layer, and the zinc layer and the steel pipe substrate are layered independently. The zinc layer is thin, and the zinc layer is simply attached to the steel pipe substrate and it is easy to fall off. Therefore, its poor corrosion resistance. In new residential buildings, the use of cold galvanized steel pipes as water supply pipes is prohibited.

BS1387/A53 carbon steel hot dipped galvanized steel pipe /tube

process flow

The hot dip galvanized steel pipe,first acid pickling to remove iron oxide,then clean,finally sent to the hot dip plating tank. The zinc layer is uniformity,strong adhesion,long service life,etc.So the corrosion resistant ability is very best.

BS1387/A53 carbon steel hot dipped galvanized steel pipe /tube

use

Firefighting Project: The firefighting water supply pipe is basically a galvanized pipe. A layer of paint is applied on the outer layer of the galvanized pipe. This means that everyone can see the red firefighting pipe. It is actually only a galvanized pipe. Processed.Steel structure, welding engineering: Now there are many scaffolding buildings outside. The former factory buildings were welded with steel pipes, but the welded steel pipes are prone to rust. In order to prevent rust but also coated with a layer of paint, in order to solve this problem, many The new steel structure works directly with galvanized pipes, which saves time and can last longer.Agriculture: It is mainly used to build warm greenhouses for flower sheds and columns for flowers and melons.

The use of galvanized steel pipe in agriculture

Little knowledge: The galvanized pipe, which is often said, is mainly used for conveying gas and heating. The galvanized pipe is used as a water pipe. After a few years of use, a large amount of rust is generated inside the pipe. The outflow of yellow water not only pollutes the sanitary ware, but also contains bacteria that grow on the unsmooth inner wall. Corrosion causes high levels of heavy metals in the water and seriously harms human health. In the 1960s and 1970s, the developed countries in the world began to develop new types of pipes and galvanized pipes were gradually prohibited. China’s Ministry of Construction and other four ministries also issued a document explicitly banned galvanized pipes since 2000.