12M, 6m, 6m, Customer's Request
ASTM ASME SUS JIS DIN
3.0-450mm
Square/ Rectangular/Round
ERW
SGH340
30% TT in advance, 70% TT /70% LC at sight balance before shipment
support
FOB, EXW, CIF, CFR
GI Steel
Galvanized Coated
10 TON
Gas pipe, greenhouses pipe, heating pipe
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Hot-dip galvanized steel pipe is a high-quality metal material, manufactured using advanced hot-dip galvanizing technology to form a uniform and dense zinc-iron alloy layer on the surface of the steel pipe. The replacement cost of galvanized steel pipe is relatively low and it is very popular in the construction industry. | |||||||||
Product Details
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PRODUCT DESCRIPTION
Product name:Galvanized steel pipe
Surface treatment process: Hot-dip galvanizing
Coating thickness: 40-85 μm (adjustable according to customer needs)
Coating adhesion: Strong, the zinc layer is firmly combined with the steel substrate and is not easy to fall off
Corrosion resistance: Excellent, with high corrosion resistance, suitable for outdoor and high humidity environments
Tensile strength :≥ 400 MPa
Elongation :≥ 20%
Outer diameter: 15 - 219 mm
wall thickness: 1.5 - 10 mm (customizable)
Standards :Meet international and domestic standards such as ISO, ASTM, GB, etc.
Service life can reach more than 15 years under normal conditions
Main applications: Construction, bridge structure, oil and gas transportation, water conservancy facilities, energy pipelines, etc.
Packaging method: Bundling, plastic packaging or according to customer needs
Transportation method: Sea and land transportation, export packaging is provided
Origin :China
Ordering requirements :Customization is supported, minimum order quantity and delivery time can be negotiated.
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PRODUCT SHOW
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Quality Inspection
Production Process
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Product Processing
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.
Rust removal method
(1). First, use a solvent to clean the surface of the steel to remove the organic matter on the surface.
(2). Then use tools to remove rust (wire brush), remove loose or inclined scale, rust, welding slag, etc.,
(3). Use pickling method. Galvanizing is divided into hot-dip and cold-dip, hot-dip is not easy to rust, cold-dip is easier to rust.
FAQ
Q1: Can you provide a sample?
A: Yes, we can provide customized samples free of charge.
Q2: What is your company's advantage?
A: As a manufacturer, we have professional quality control engineers who ensure the delivery of high-quality, defect-free products to our customers. Our professional sales team and competitive prices help customers complete their orders quickly, saving time.
Q3: What is your payment term?
A: We accept payment through T/T (Telegraphic Transfer) and L/C (Letter of Credit).
Q4: What is the packaging method?
A: We use standard export packaging, which includes PVC wrapping, waterproof paper, and sea-worthy wooden packing. This ensures that the products are well-protected during transportation.