Hot dipped galvanized steel pipe is also called HDG pipe or GI pipe or Galvanized iron tube. The most common steel grade is A53 Gr.B galvanized steel pipe which is mainly for structural service such as greenhouse structure and building frames. Galvanized steel pipe is also known as hot dipped zinc coated steel pipe and hot dipped galvanized steel pipe and shorten as GI pipe or HDG iron pipe. Galvanizing is an effective metal corrosion protection. GI pipe is mainly used in various sectors of the metal structure facilities. And it is the rust after the steel immersed in about 500℃ melting zinc solution, so that the surface of GI pipe attached to the zinc layer which play the purpose of anti-corrosion.
Zinc Coated Steel Pipe GI Pipe HDG Pipes A53 Gr.B
5.8 meters, 6 meters
Q195, Q235, A53
Comply with the standard
GB/T3091-2008, ASTM A53
GI pipe is divided into cold galvanized steel pipe, hot dip galvanized steel pipe. Cold galvanized steel pipe has been disabled, the latter has been the state advocates can use for the time being.
In sixties and seventies, developed countries in the world began to develop new pipe material, and gradually to disable the galvanized pipe. China ministry of construction and other four ministries and commissions also send civilization to be banned from 2000 galvanized pipe for water supply pipe. The new district of cold water pipe has been rarely used galvanized pipe and some village used hot water pipe is GI pipe. Hot dip galvanized steel pipe on fire protection, electric power and highways have a wide range of applications.
Hot dip galvanized steel pipe surface is plated layer or electric galvanized welded steel pipe. Galvanized steel pipe corrosion resistance can increase and prolong service life. Galvanized pipe using is very wide, in addition to a general low pressure fluid such as water, gas, oil line pipe, also used as oil industry especially the ocean oil field oil well pipe, oil pipe, chemical coking equipment of oil heater, the condensing, exchange of coal distillation wash oil cooler for tube and trestle pile, mining tunnel supporting frame tube etc.
The packing for A53 Gr.B Zinc Coated Steel Pipe GI Pipe HDG Pipes
1. in bulk
2. in hexagonal bundles by steel strips only
3. in bundles by steel strips then packed by water-proof plastic wraps. For 20' container the max length is 5.85m; For 40" container the max length is 11.8m.