Galvanized steel pipe is a kind of carbon steel pipe, mostly welded pipe,Galvanized steel pipes are divided into cold galvanized steel pipes (electro galvanized steel pipes) and hot-dip galvanized steel pipes. At present, hot-dip galvanized steel pipes are mainly used in fire protection, electric power and highways.
Galvanizing can increase the corrosion resistance of steel pipes and prolong their service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for water transmission, gas, oil and other general low-pressure fluids, they are also used as oil well pipes and oil transmission pipes in the petroleum industry, especially in offshore oil fields, as well as pipes for oil heaters, condensing coolers, coal distillation oil washing exchanges of chemical coking equipment, as well as trestle pipe piles, support frames of mine tunnels, etc.
Hot-dip galvanizing (HDG), as referenced is the process of dipping fabricated steel into a kettle or vat of molten zinc.
Hot-dip galvanizing (HDG) is the process of coating iron, steel or ferrous materials with a layer of zinc. This done by passing the metal through molten zinc at a temperature of 860°F (460°C) to form zinc carbonate (ZNC03). Zinc carbonate is a strong material that protects steel and can prevent corrosion in many circumstances. Hot-dip galvanizing can be carried out cheaply and in large batches.
Galvanized steel pipe is a welded steel pipe with a hot-dip or electro-galvanized layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and prolong their 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 pipelines in the petroleum industry, especially offshore oil fields, and oil heaters and condensation pipes for chemical coking equipment. Pipes for coolers, coal distillation washing oil exchangers, trestle piles, and support pipes for mine tunnels, etc.
| Product name |
Hot Sale Prime Quality Galvanized Pipe |
| Material |
Q235, Q345, S235JR, S275JR, SS400, A36, St37-2, St52-4, STK400, STK500, S355JR, GR.B-D..... |
| Surface Finish |
Pre-galvanized, Hot dipped galvanized, Electro galvanized, Black, Painted, Threaded, Engraved, Socket. |
| Shape |
Round /Square /Rectangular |
| Outer Dia (mm) |
21.3-165mm/ 10*10-600*600mm/ 10*20-800*400mm |
| Wall Thickness (mm) |
0.5-2.5 to 1.5-5.5/ 0.4-27mm/ 0.4-27mm |
| Length (mm) |
5800 or 6000/ 6M or customized |
| Surface Treatment |
1)Black, Pre-galvanized |
| 2)Oiled, powder coating |
| 3)Galvanized as your requirement |
| PS:Pre galvanized steel pipe: 60-150g/m² |
| Hot dipped galvanized steel pipe: 200-400g/m² |
| End Finish |
Plain/ beveled ends or threaded with sockets/ coupling and plastic caps. |
| Packaging |
Packing in bundle with steel strips; with seaworthy package at the end; could be done with your requirement. |
| Inspection |
With Chemical Composition and Mechanical Properties Testing; Hydrostatic Test, Dimensional and Visual Inspection, With Nondestructive Inspection |
| Application |
construction pipe, machine structure pipe, agriculture equipment pipe, water and gas pipe, Greenhouse pipe, Building material, Furniture tube, Low pressure fluid tube, etc |
| Others |
1:Special design available according to requirement |
| 2:Pipe can be necked dowm, punching hole on pipe wall. |
| 3:Pipe fittings, elbows are available. |
| 4.All production process are under the ISO 9001:2000 strictly |
Galvanized Steel Pipe products are divided into two main categories based on the galvanizing process: 1) pre-galvanized steel pipe ; 2) hot-dip galvanized steel pipe.
Pre-galvanized steel pipe (also known as GI pipe) is made from continuous hot-dip galvanized steel strip wound and welded, and the galvanizing process takes place before the pipe is formed.
Hot-dip galvanized steel pipe are made from welded steel tubes with a black surface which are degreased, pickled, dipped, dried, and then impregnated with dissolved zinc for a period of time, with the galvanizing step taking place after the tubes are formed.
The main difference between pre-galvanized steel pipe and hot-dip galvanized steel pipe:
1. Different appearance:
The surface of pre-galvanized steel pipe is smooth, bright, even, flat and greenish white.
The surface of hot-dip galvanized steel pipe is rough, which is caused by the hot-dip galvanizing process, and the color is darker and silver-white.
2. Corrosion resistance:
The corrosion resistance of pre-galvanized steel pipe is poorer than that of hot-dip galvanized pipe, firstly, because the galvanized strip removes the excess zinc liquid during the production process, resulting in a thinner layer of zinc; secondly, because galvanizing is carried out prior to the formation of the steel pipe, there will be no zinc coverage on the weld seams and cuts of the pre-galvanized steel pipe, resulting in poorer corrosion resistance.
Hot-dip galvanized steel pipe has strong corrosion resistance, and its service life can be up to 20-50 years depending on the use environment and the amount of galvanization.
3. Cost:
Pre-galvanized pipe costs less than hot-dip galvanized pipe.
For more professional advice when purchasing galvanized pipe, click the "Contact Now" button on the right to get in touch with our sales staff.
We can produce different sizes, thicknesses, widths and materials according to your requirements
Applications for Galvanized Steel Pipe
I. Construction field
Galvanized steel pipe is widely used in construction field, mainly used for indoor and outdoor water, gas, oil, heating, cooling and other pipeline systems, such as municipal engineering, water supply, HVAC, air conditioning, firefighting, heating and so on. It has good corrosion resistance, can effectively extend its service life, but also in the construction of a large number of cost reduction.
II. the field of machinery manufacturing
Galvanized steel pipe in the field of machinery manufacturing also has important applications, mainly used in the manufacture of various machinery, equipment and components, such as automobile manufacturing, shipbuilding, electrical power distribution. The products in these fields are often subjected to various corrosion and oxidation because they are in a complicated environment for a long time, and hot-dip galvanized steel pipe can effectively extend the service life of these products.
III. petroleum, chemical industry
Galvanized steel pipe has a wide range of applications in the petroleum, chemical industry, mainly used for oil, natural gas transmission, chemical industry pipe, such as fertilizer, cement and so on. The products in these fields need to have high corrosion resistance and high temperature resistance, and the hot dip galvanized steel pipe has excellent these characteristics.
IV.Other industries
Galvanized steel pipe is also widely used in other industries, such as coal mine ventilation, drainage, mine support, aviation, aerospace, bicycle manufacturing and other fields. Because this type of pipe has the characteristics of pressure, bending and tensile resistance, and is light weight and strong, it is widely used in various fields.
Specific uses of Galvanized pipe: agricultural greenhouse construction, greenhouse steel pipe, canopy steel frame, steel structure plant, mesh frame steel pipe, parking shed, sanitary ware steel pipe, staircase handrails, balcony railing, guardrail, leisure furniture, play equipment, fitness equipment, air-conditioning cooling racks, threading pipe, wire protection pipe, lighting room steel frame, construction sites and so on.
Our company is a steel supplier from China, located in Tianjin City, one of the largest steel producers in China. The company integrates the manufacturing, wholesale, material processing and warehousing of stainless steel, aluminum, copper and carbon steel materials, and has established long-term and stable cooperative relations with many well-known steel plants, such as Tisco, Baosteel, Hongwang, Zhangpu, Liangzhong and Jiugang.
Mainly products cover carbon steel tubes, stainless steel tubes, galvanized steel coil, ppgi steel coil, stainless steel coil, carbon steel coil and carbon steel profiles, gi wire, hollow anchor bar, section steel, steel rebar etc. Our company is equipped with plasma cutting machine, coil flattening equipment, laser cutting machine, 8K mirror, frosted wire drawing, filming and titanium plating equipment, which can flatten, split, shear, oil mill wire drawing, and roll oil film wire drawing on stainless steel materials, 8K mirror, titanium and other processing.
In addition, the company's characteristic business: zero-cutting, rounding, square cutting, special-shaped cutting, castings, forgings, product thicknesses up to 150mm, various special materials and specifications can be customized to steel mills.
Companies adhering to the "efficient, win-win" business philosophy, continue to provide customers with professional, quality products and value-added services, continuous progress and learning to meet customer needs. Now the company has entered the period of rapid development of global trade, looking forward to more cooperation.
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Packaging and Transportation
We offer different modes of transport depending on the customer's destination: rail transport and ship transport,etc.The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards,Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, When you first contacted us, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day. Business in progress, we will be online 24 hours for you.
If you are interested in our products, you can contact me at any time and look forward to our cooperation!
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