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| After-sales Service: | Online |
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| Warranty: | 1 Year |
| Type: | Seamless |
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Galvanized steel pipe refers to a steel pipe with a zinc - coating on its surface, which is used to enhance the corrosion resistance of the pipe and extend its service life. It is widely used in various fields such as construction, water supply and drainage, and gas transmission. The following is a detailed introduction:
Manufacturing Process
Hot - dip Galvanizing: This is the most common method. First, the base pipe (usually a welded pipe) is pre - treated, including pickling to remove rust and oxide scale, washing, and fluxing. Then, it is immersed in a molten zinc bath at about 450°C. The iron in the steel pipe reacts with the molten zinc to form a zinc - iron alloy layer, and a pure zinc layer is formed on the surface after cooling.
Electro - galvanizing: Also known as cold - galvanizing, it obtains a zinc layer on the surface of the steel pipe through an electrolytic method. However, the zinc layer is relatively thin, usually only 10 - 50g/m², with poor adhesion and corrosion resistance, and is now less used.
Types
Post - weld Galvanizing: That is, the steel pipe is welded first and then galvanized. The zinc layer can completely cover the entire surface of the pipe, including the weld, with the best overall corrosion resistance.
Pre - galvanized Welding: Use pre - galvanized steel strip to form and weld into a pipe. The zinc layer of the pipe body is intact, but the zinc layer near the weld will be damaged during welding, and additional anti - corrosion treatment is required for the weld.
Specifications
Standards:
There are many international and domestic standards for galvanized steel pipes, such as ASTM A53 in the United States, BS 1387 - 85 in the United Kingdom, and GB/T 3091 - 2015 in China.
Dimensions: The outer diameter of round pipes is generally 17mm - 273mm, the wall thickness is 0.6mm - 12mm, and the length is usually 2m - 12m. Square pipes and rectangular pipes also have a variety of specifications.
Performance Characteristics
Corrosion Resistance: Due to the protection of the zinc layer, the corrosion resistance is much higher than that of ordinary steel pipes. The hot - dip galvanized steel pipe has a thick zinc layer, uniform coating, and strong adhesion, so it has a long service life in a corrosive environment.
Mechanical Properties: The base steel pipe has certain strength and rigidity, and after galvanizing, its mechanical properties are basically unchanged, and it can meet the use requirements of different occasions.
Applications
Water Supply and Drainage: Although galvanized steel pipes are gradually being replaced by plastic pipes in some domestic water supply occasions, they are still widely used in some industrial water supply, fire - fighting water supply, and drainage systems.
Gas Transmission: It can be used for the transportation of gas, heating gas, etc.
Construction Industry: Used for building structural supports, such as scaffolding, and also for the installation of building pipelines.
Industrial Fields: Such as in the oil industry, it is used as oil well pipes and oil transmission pipes; in the chemical industry, it is used for the pipelines of some corrosive media.
Connection Methods
Threaded Connection: Threads are cut after galvanizing, and connected with pipe fittings.
Welding Connection: Although welding will damage the zinc layer at the weld, it is still widely used in some occasions with high strength requirements after appropriate anti - corrosion treatment of the weld.
Grooved Connection: Connect the pipes through grooved fittings, which is convenient for installation and has good sealing performance.
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Product Name
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Hot Dipped Galvanised Iron pipe/Galvanized Steel SquareTubes
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Material
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MS |
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Size
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1/2"-24" (DN15mm-609.6mm)
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Certificates
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ISO 9001:2008, SGS, BV, CCIC.
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Standard
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EN10219 ASTM A36 |
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Wall thickness
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0.8MM-12MM
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Surface Treatment
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galvanized, anti-corrosion coated.
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Pipe Ends
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Under 2 inch plain end. 2 inch and above Beveled. Plastic caps (small OD). Iron protector (large OD).
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| Marking |
Standard marking, or according to your request. Marking Method: Spray white paint
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Pipe Length
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1. Single Random Length and double Random Length.
2. SRL:3M-5.8M DRL:10-11.8M or As clients requested length
3. fixed length(5.8m, 6m, 12m)
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Packaging
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Loose package; Packaged in bundles(2Ton Max); bundled pipes with two slings at the both end for easy loading and discharging; wooden cases; waterproof woven bag.
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Test
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Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection,hydraulic testing , X-ray Test.
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Application
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liquid delivery,Structure pipe,construction, petroleum cracking,oil pipe,gas pipe
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Zinc coating
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40-275g/m² |
Q: Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time .Honesty is our company's tenet.
Q: Do you provide samples ? is it free or extra ?
A: The sample could can provide for customer with free,but the courier freight will be covered by customer account.
Q: Do you accept the third party inspection?
A: Yes absolutely we accept.
Q: How could you guarantee your products?
A: Each piece of products is manufactured by certified workshops, inspected by Linxu piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.
Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,the Skype,Wechat and WhatsApp will be online in 24 hours.Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.
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