Qingdao low prices of galvanized pipe, galvanized steel pipe brand, Hua Qi galvanized pipe direct selling, Galvanized pipe specifications, Tianjin galvanized pipe agents, Friends of fever dip galvanized pipe, Lida hot galvanized pipe wholesale. 18622303953, caller questions galvanized pipe. Hot galvanized pipe annual production of 10 million tons, and can produce 4 -8 inches in diameter, wall thickness 0.8-3.0mm all kinds of hot galvanized pipe, galvanized steel tube is a tool to hot-rolled or cold-rolled galvanized made by high-frequency welding, cross-sectional shape of the hollow section steel, galvanized steel pipe widely used construction works, civil chimney, central air conditioning ducts, fences and then the strip is blank by cold bending forming, threading pipe, greenhouses (greenhouse tube ), shutter doors. Two kinds of galvanized steel pipe hot galvanized and electro-galvanized, hot dip galvanized galvanized layer thickness, coating uniformity, strong adhesion, long life and other advantages. Electro-galvanized low cost, the surface is not very smooth, and their own resistance to corrosion than hot dip galvanized pipe is a lot of difference. The galvanized pipe National Institute of Standards and size standard: GB/T3091-2008 low pressure fluid transfer welded steel pipe the GB/T13793-2008 straight seam welding steel pipe GB/T21835-2008 welded steel pipe dimensions and weight per unit length galvanized steel pipe hot galvanized and electro-galvanized two, hot dip galvanized galvanized thickness, electro-galvanized, low cost, and the surface is not very smooth. The oxygen blowing welded pipe: used as a steel-making oxygen blowing tube, usually with a small-diameter welded steel pipe, eight kinds of specifications 3/8-2 inch. 08,10,15,20 or 195-Q235 strip made into anti-corrosion, and some to be the effective infiltration aluminum processing.