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| Categories | Metal Wire Mesh |
|---|---|
| Brand Name: | qijie |
| Model Number: | steel pipe |
| Certification: | steel pipe |
| Place of Origin: | China |
| MOQ: | 10tons |
| Payment Terms: | L/C, D/P, T/T, Western Union |
| Supply Ability: | 100tons |
| Delivery Time: | 15-18days |
| Packaging Details: | bulk |
| Material: | steel |
| Surface Treatment: | hot dipped galvanized |
| Standard: | GB/T3091 - 2001 ,BS1387 - 1985 , DIN EN10025 ,EN10219 , JIS G3444:2004 , ASTM A53 |
| Steel Grade: | GB/T3091 - 2001:Q195 , Q235 BS1387 - 1985 , DIN EN10025 EN10219 :S235JR JIS G3444:2004:STK400 ASTM A53: GR. A , GR. B |
| Company Info. |
| Hebei Qijie Wire Mesh MFG Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Galvanized Steel Round Square Pipe for Building Materials
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.
Cold galvanized pipe is electro-galvanized, and the amount of
galvanized is very small, only 10-50g/m2. Its corrosion resistance
is much different than that of hot-dip galvanized pipe. In order to
ensure the quality, most regular galvanized pipe manufacturers do
not use electro-galvanized (cold plating). Only those small
enterprises with outdated equipment use electrogalvanizing, and of
course their prices are relatively cheap. The Ministry of
Construction has officially issued an order to eliminate cold
galvanized pipes with outdated technology, and not to use cold
galvanized pipes for water and gas pipes. The galvanized layer of
cold galvanized steel pipe is an electroplating layer, and the zinc
layer is independently layered with the steel pipe substrate. The
zinc layer is thin, and the zinc layer simply adheres to the steel
pipe substrate and is easy to fall off. Therefore, its corrosion
resistance is poor.
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1.Black square&rectanhgular steel pipe:ERW steel tube
2.Pre-galvanized square&rectangular steel pipe: Pre-galvanized
square/rectangular tube is made of hot dipped galvanized steel
strip directly.
3.Hot dipped galvanizedsquare&rectangular steel pipe : Hot
dipped galvanized square/rectangular tube owns thicker zinc coating
than pre-galvanized square/rectangular tube. Black tubes will be
dipped into zinc pool for galvanizing.
4.Electro galvanized square&rectangular steel pipe : The
technology of electro galvanized square/rectangular tube is similar
to hot dipped galvanized tube, but the thickness of zinc coating is
less than hot dipped galvanized tube.
5.Painted square&rectangular steel pipe:Painted
square/rectangular to remove the rust and clean the oil first and
then paint the required color paint.
Standard:GB/T6728:2002,ASTMA500,JIS G3466,EN10210,EN10219
Steel Grade:
GB/T6728:2002 : Q195 , Q235 , Q345
ASTM A500:GR. A , GR. B, GR. C , GR. D
JIS G3466 : SS440,SS540
EN10210, EN10219: S235JR ,S275JR,S355JR, S355J2H
Square & rectangular steel tube : The size can be based on your requirement to custom.
| Name | Size | Wall Thickness | Length |
| mm | mm | m | |
| Square tube | 10x10-500x500 | 0.6-25.0 | 1-12m |
| Rectangular tube | 20x10-200x400 | 0.7-13.0 | 1-12m |
TECHNICAL PARAMETERS | |
Product Name | Galvanized Steel Round Pipe |
Keywords | Steel Pipe |
Standard | BS1139-1775, EN1039, EN10219, JIS G3444:2004, GB/T3091-2001,
BS1387-1985, DIN EN10025, ASTM A53 SCH40/80/STD, BS-EN10255-2004 |
Material | Q235, Q345, S235JR, S275JR, STK400, STK500, S355JR, GR.B-D |
Thickness | Pre Galvanized:0.6-1.5mm. |
Hot Dipped Galvanized: 1.6- 25mm. | |
Length | 5.80 Meters Or 6 Meters As Usual Or By Customer'S Requirements |
Out Diameter | Pre Galvanized:1/2''-4''(21.3-114.3mm). |
Hot Dipped Galvanized:1/2''-10''(21.3Mm-273.1mm). | |
Zinc Coating | Pre Galvanized:5GSM-40GSM |
Hot Dipped Galvanized 35GSM-200GSM | |
Technique | Electronic Resistance Welded (ERW) |
Surface Finish | Pre-Galvanized, Hot Dipped Galvanized, Electro Galvanized, Black,
Painted, Threaded, Engraved, Socket. |
Application | Hot Dipped Galvanized Steel Pipe Is Widely Used In Construction,
Structure, Accessorize,Construction, Machinery Parts,Fluid
Transportation,The Stress Parts Of The AutomobileTractor Parts And
So On. |
Packing | 1.Big OD:In Bulk |
2.Small OD:Packed By Steel Strips | |
3.Woven Cloth With 7Slats | |
4.According To The Requirements Of Customers | |
SIZE INTRODUCTION | ||
Out Diameter | Wall Thickness | Length |
Inch | Mm | M |
1/2" | 0.5-2.75 | 1-12M (Customized) |
3/4" | 0.5-2.75 | 1-12M (Customized) |
1" | 0.5-3.75 | 1-12M (Customized) |
1-1/4" | 0.5-5.0 | 1-12M (Customized) |
1-1/2" | 0.5-5.0+ | 1-12M (Customized) |
2" | 0.5-5.0+ | 1-12M (Customized) |
2-1/2" | 0.8-5.0+ | 1-12M (Customized) |
3" | 0.8-5.0+ | 1-12M (Customized) |
4" | 0.8-4.0 | 1-12M (Customized) |
5" | 1.1-4.75 | 1-12M (Customized) |
6" | 1.1-6.0+ | 1-12M (Customized) |
8" | 1.2-6.5+ | 1-12M (Customized) |
10" | 2.75-5.0+ | 1-12M (Customized) |
|
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