Hot-dip galvanized steel pipe is widely used in construction, machinery, coal mine, chemical industry, electric power, railway vehicles, automobile industry, highway, bridge, container, sports facilities, agricultural machinery, petroleum machinery,exploration machinery and other manufacturing industries.

Galvanized steel pipes are divided into hot-dip galvanized steel pipes and cold galvanized steel pipes. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between the matrix of hot-dip galvanized steel pipe and the molten bath to form a compact zinc-iron alloy layer with corrosion resistance. The alloy layer is integrated with the pure zinc layer and the steel tube matrix, so its corrosion resistance is strong.

Cold galvanized steel pipe is electric galvanized, galvanized amount is little, cold galvanized steel pipe galvanized layer is electroplating, zinc layer and steel pipe matrix independent stratification. Zinc layer is thin, zinc layer is simply attached to the steel tube matrix, easy to fall off. So its corrosion resistance is poor. It is prohibited to use cold galvanized steel pipes as water supply pipes in newly built houses.

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Tubos de aço soldados com molho quente ou revestimento de eletrogalvanização. A galvanização pode aumentar a resistência à corrosão do tubo de aço e prolongar sua vida útil. Os usos de tubos galvanizados são muito amplos, além de um fluido geral de baixa pressão, como água, gás, tubo de linha de óleo, também usado como indústria de petróleo, especialmente o tubo do poço de petróleo de petróleo oceânico, tubo de óleo, equipamento de estojo químico do aquecedor de óleo, O condensação, troca de destilação de carvão para lavar o refrigerador de óleo para tubo e pilha de cavalete, tubo de moldura de suporte ao túnel de mineração, etc.

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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 ? É de graça?

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.