Manufacturer DIN 17175 Round Galvanized Seamless Steel Pipe In
China
Technique:Hot Rolled
Product name:Seamless Steel Pipe
End protector:Plastic Pipe Cap
Type:Seamless Round Steel Pipe
Surface:Painting
Shape:Round Shape
Usage:Construction Structure
Steel Grade:GB JIS ASTM BS DIN
Applications
Hot-dip galvanized steel pipes are widely used in construction,
machinery, coal mines, chemicals, electric power, railway vehicles,
automobile industry, highways, bridges, containers, sports
facilities, agricultural machinery, petroleum machinery,
prospecting machinery, greenhouse construction and other
manufacturing industries.
Galvanized steel pipe is a welded steel pipe with a hot-dip
galvanized or electro-galvanized layer on the surface. Galvanizing
can increase the corrosion resistance of steel pipes and prolong
the service life. Galvanized pipes are widely used. In addition to
being used as pipeline pipes for general low-pressure fluids such
as water, gas, and oil, they are also used as oil well pipes and
oil pipes in the petroleum industry, especially in offshore oil
fields, and oil heaters and condensers in chemical coking
equipment. Pipes for coolers, coal distillation washing oil
exchangers, and pipes for trestle piles, supporting frames for mine
tunnels, etc.
Production steps
The process flow is: black tube - alkali washing - water washing -
pickling - water rinsing - dipping aid - drying - hot dip
galvanizing - outside blowing - inside blowing - air cooling -
water cooling - Passivation - water rinsing - inspection - weighing
- storage.
Current national standard
National standard and size standard of galvanized pipe
GB/T3091-2015 Welded steel pipes for low pressure fluid
transportation
GB/T13793-2016 Straight seam electric welded steel pipe
GB/T21835-2008 Welded steel pipe dimensions and weight per unit
length
Detailed introduction
Hot-dip galvanized pipe is to make the molten metal react with the
iron matrix to produce an alloy layer, so that the matrix and the
coating are combined. Hot-dip galvanizing is to pickle the steel
pipe first. In order to remove the iron oxide on the surface of the
steel pipe, after pickling, it is cleaned in the tank of ammonium
chloride or zinc chloride aqueous solution or mixed aqueous
solution of ammonium chloride and zinc chloride, and then sent to
the in the hot dip bath. Hot-dip galvanizing has the advantages of
uniform coating, strong adhesion and long service life. The hot-dip
galvanized steel pipe substrate undergoes complex physical and
chemical reactions with the molten plating solution to form a
corrosion-resistant zinc-iron alloy layer with a compact structure.
The alloy layer is integrated with the pure zinc layer and the
steel pipe substrate, so it has strong corrosion resistance.
| Advantage: | Mechanical Properties Meet Standards |
| MOQ: | 3 tons per size |
| Payment Terms: | T/T , L/C, Western Union |
| Trad terms: | FOB; CNF; CIF |
| Delivery time: | With 20 days after confirmed order |
| Port | qingdao shanghai tianjin |
