Galvanized round pipes are generally used as middle-layer structural parts, with uniform resistance. Galvanized steel pipes have been used in water supply pipelines in buildings for a hundred years. They have good strength, rigidity and impact resistance, and certain temperature and pressure resistance. The price is moderate. , The raw materials are easy to obtain and easy to process, so as a main water supply material, it is widely used in industry, agriculture and various water supply pipelines and fire fighting pipelines inside buildings.
1-12m or as required
0.6m-3m or as required
0.1mm-300mm or as required
Clean, blasting and painting according to customer requirement
Hot dip galvanized tube is to make molten metal and iron matrix reaction and produce alloy layer, so that the matrix and coating of the combination of the two. Hot dip galvanizing is the first steel pipe pickling, in order to remove iron oxide on the surface of the steel pipe, pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between hot dip galvanized steel tube and molten plating solution to form a tightly structured zinc-ferroalloy layer with corrosion resistance. The alloy layer is integrated with pure zinc layer and steel tube matrix, so its corrosion resistance is strong.
Technological process is: the clarinet, alkaline cleaning, washing, pickling, rinse, leaching agent, drying, hot dip galvanized - - within the outer wind - air cooling, water cooling, passivation, water rinse, inspection, weighing, warehousing.
(1) carbon; The higher the carbon content, the harder the steel, but the less plastic and ductile it is.
(2) sulfur; Is harmful debris in steel, steel with higher sulfur in high temperature pressure processing, easy to crack, usually called hot brittleness.
(3) Phosphorus; It can significantly reduce the plasticity and toughness of steel, especially at low temperature, which is more serious, and this phenomenon is called cold brittleness. In high quality steel, sulfur and phosphorus should be strictly controlled. But on the other hand, low carbon steel contains higher sulfur and phosphorus, can make its cutting easy to break, to improve the machinability of steel is favorable.
(4) manganese; Can improve the strength of steel, can weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel, high alloy steel with high manganese content (high manganese steel) has good wear resistance and other physical properties.
(5) silicon; It can improve the hardness of steel, but the plasticity and toughness decline, electrical steel contains a certain amount of silicon, can improve the soft magnetic properties.
(6) tungsten; It can improve the red hardness, thermal strength and wear resistance of steel.
(7) Chromium; It can improve the hardenability and wear resistance of steel, improve the corrosion resistance and oxidation resistance of steel.
(8) zinc; In order to improve the corrosion resistance, the general steel pipe (black pipe) is galvanized. Galvanized steel pipe is divided into two kinds of hot dip galvanized steel and electric steel zinc, hot dip galvanized galvanized layer thick, electric galvanized cost is low, so there is galvanized steel pipe.
1, the first use of solvent cleaning steel surface, the surface of the organic matter removal,
2, then use tools to remove rust (wire brush), remove loose or tilt scale, rust, welding slag, etc.,
3, the use of pickling.
Galvanized is divided into hot plating and cold plating, hot plating is not easy to rust, cold plating is easy to rust.
Q:What is your terms of payment?
A:We usually accept T/T in advance, L/C for large sum.If you prefer other payments terms, please discuss.
Q:What is the terms of delivery?
A:EXW, FOB, CIF
Q:What is the terms of packing?
A:Generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers' requirements.
Q:What is your delivery time?
A:For products in stock, we can ship it within 7 days after receiving the deposit.For custom order, production time is 15-30
workdays after received the deposit.
Q:Could you produce according to the samples?
A:Yes, we could customer-made by your samples or technique drawings, we could build the mold and fixtures.
Q:Can I place an sample order and what is your MOQ if I accept your quality?
A:Yes, we can send you samples but you may pay the express fees, our MOQ is 1 ton.
Q:How could you guarantee your products?
A:We accept and support the third-party inspection.We also could issue the warranty to customer to guarantee the quality.
Q:Where is the port of shipment?
A:Ningbo or Shanghai sea port.
Q:How can I get the price of needed product?
A:It's the best way if you can send us the material, size and surface, so we can produce for u to check the quality.If you
still have any confusion, just contact us, we would like to be helpful.