Product Description
Hot dip Galvanized Pipe is to make molten metal react with iron substrate to produce alloy layer, so that the substrate and coating can be combined. Hot galvanizing refers to pickling the Steel Pipe first. In order to remove iron oxide on the steel pipe surface, after pickling, the steel pipe is cleaned in ammonium chloride or zinc chloride aqueous solution or mixed ammonium chloride and zinc chloride aqueous solution tank, and then sent to the hot dip tank. Hot dip galvanizing has the advantages of even coating, strong adhesion and long service life. Most of the processes in the north adopt the zinc strip direct coil zinc supplement process.
Strong adhesion and long service life. Most of the processes in the north adopt the zinc strip direct coil zinc supplement process.
Cold galvanizing refers to electro galvanizing. The amount of galvanizing is very small, only 10-50g/m2, and its corrosion resistance is much different from that of hot-dip galvanized pipe. In order to ensure the quality, most of the regular galvanized pipe manufacturers do not use galvanization (cold plating). Only those small enterprises with small scale and outdated equipment adopt galvanization, of course, their prices are relatively cheap. In the future, it is not allowed to use cold galvanized pipes as water and gas pipes.
Complex physical and chemical reactions occur between the steel pipe substrate and the molten plating solution to form a corrosion resistant zinc iron alloy layer with compact structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.
With the development of the 1960s and 1970s, the quality of hot-dip galvanized steel pipes has been greatly improved. From 1981 to 1989, they were successively awarded the Ministry of Metallurgy's High Quality Product and the National Silver Medal. The output has also increased for many years. In 1993, the output was 400000 tons, and in 1999, the output was 600000 tons. They are exported to Southeast Asia, Africa, the United States, Japan, Germany and other countries and regions. Hot dip galvanized pipes are mostly used as water transmission pipes and gas pipes, and the commonly used specifications are+12.5~+102 mm. Since the 1990s, due to the national emphasis on environmental protection, the control of highly polluting enterprises has become more and more strict.
Product Parameter
Product Name | Thick Wall Galvanized Pipe |
Material | 10#, 20#, 45#, 16Mn, A53(A,B), Q235, Q345, Q195, Q215, St37, St42, St37-2, St35.4, St52.4, ST35,Etc |
Wall Thickness | 1MM~12MM ,customizable |
Outer Diameter | 20MM~508MM ,customizable |
Length | 5m-14m,5.8m,6m,10m-12m,12m or as customer's actual reques |
Standard | API 5L, ASTM A53-2007, ASTM A671-2006, ASTM A252-1998, ASTM A450-1996, ASME B36.10M-2004, ASTM A523-1996, BS 1387, BS EN10296, BS 6323, BS 6363, BS EN10219, GB/T 3091-2001, GB/T 13793-1992, GB/T9711, etc |
Grade | 10#-45#, 16Mn, A53-A369, Q195-Q345, ST35-ST52 10#-45#, 16Mn, A53-A369, Q195-Q345, ST35-ST52 Grade A, Grade B, Grade C,Etc |
Technique | Hot Dip Galvanized Round Steel Pipe |
Pipe Ends | Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc. |
Surface Treatment | 1. Galvanized 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement |
MOQ | 1 ton,Samples available |
payment terms | Our usual payment methods are T/T, L/C, D/A, D/P, Western Union, MoneyGram (30% deposit),According to customer requirements |
Certificates | ISO9001-2008,CE ,etc. |
Packing | Bundle, or with all kinds of colors PVC or as your requirements |
Delivery Time | Usually within 7-10 days after receipt of advance payment |
Product Application | 1. Fence, greenhouse, door pipe,greenhouse 2. Low pressure liquid, water, gas, oil, line pipe 3. For both indoor and outdoor the building construction 4. Widely used in scaffolding construction which is much cheaper and convenient |
| |
DN | NB | OD(MM) | WT(MM) | Pcs/Bundle |
15 | 1/2" | 19mm-21.3mm | 1.5mm-3.0mm | 217 |
20 | 3/4" | 25mm-26.9mm | 1.5mm-3.0mm | 169 |
25 | 1" | 32mm-33.7mm | 1.5mm-3.0mm | 127 |
32 | 1.1/4" | 40mm-42.4mm | 1.5mm-4.0mm | 112 |
40 | 1.1/2" | 47mm-48.3mm | 1.5mm-4.0mm | 456 |
50 | 2" | 58mm-60.3mm | 1.5mm-4.0mm | 345 |
65 | 2.1/2" | 73mm-76.1mm | 1.5mm-4.0mm | 454 |
80 | 3" | 87mm-88.9mm | 1.5mm-9.5mm | 330 |
100 | 4" | 113mm-114.3mm | 2.0mm-9.5mm | 229 |
125 | 5" | 140mm-141.3mm | 3.0mm-9.5mm | 122 |
150 | 6" | 165mm-168.3mm | 3.0mm-12.0mm | 256 |
200 | 8" | 219.1mm | 3.2mm-12.0mm | 568 |
250 | 10" | 273.0mm | 3.2mm-12.0mm | 456 |
300 | 12" | 323.9mm-325mm | 6.0mm-15mm | 465 |
350 | 14" | 355mm-355.6mm | 8.0mm-15mm | 755 |
400 | 16" | 406.4mm | 8.0mm-20mm | 568 |
450 | 18" | 457mm | 9.0mm-23mm | 644 |
500 | 20" | 508mm | 9.0mm-23mm | 321 |
550 | 22" | 558.8mm | 9.0mm-23mm | 258 |
600 | 24" | 609.6mm | 9.0mm-23mm | 456 |
Product Show
Welded steel tubes with hot dip or electrogalvanizing coating. Galvanizing can increase the corrosion resistance of steel pipe and prolong its service life. Galvanized pipe USES 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.
Certification
Packing & Delivery
FAQ
1.Why you choose us ?
Our company has been 12 years. We control the quality of the products very strictly, there are special people for the quality.
If you got lower price from other supplier ,we will pay back twice to customers about the higher price.
2.How long is your delivery time?
According to the quantity.Generally within 2-7 days if in stock.And 15-20 days if not in stock.
3.What is your payment terms?
A: By T/T 30% in advance ,and 70% before delivery.
B:100% L/C at sight.
C:By T/T 30% in advance,and 70% L/C at sight.
4.Do you provide samples ? Is it free?
Yes, we offer the sample for free but do not pay for the cost of freight.
5.What if the customer is not satisfied?
If there is a problem with the product,we take full responsibility.