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Zhengde Galvanized steel pipes are divided into cold-galvanized
pipes and hot-dip galvanized pipes. According to the shape, they
are divided into galvanized round pipes and galvanized square
rectangular pipes. Both the substrate 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 by ammonium chloride or zinc chloride
aqueous solution or a mixed aqueous solution of ammonium chloride
and zinc chloride, and then sent to hot-dip coating tank. Hot-dip
galvanizing has the advantages of uniform coating, strong adhesion
and long service life.
Galvanized pipe, also known as galvanized steel pipe, is divided
into two types: hot-dip galvanizing and electro-galvanizing.
Hot-dip galvanizing has a thick zinc layer and has the advantages
of uniform coating, strong adhesion, and long service life. The
cost of electro-galvanized pipes is low, the surface is not very
smooth, and its corrosion resistance is much worse than that of
hot-dip galvanized pipes.
DN | outer diameter | Ordinary steel pipe | Thickened steel pipe | |||||||
MM | MM | Deviation | Thickness | welded pipe(kg/m) | Galvanized pipe(kg/m) | Thickness | welded pipe(kg/m) | Galvanized pipe(kg/m) | ||
MM | Deviation | MM | Deviation | |||||||
6 | 10.2 | 2.0 | 0.40 | 0.4256 | 2.5 | 0.47 | 0.50 | |||
8 | 13.5 | 2.3 | +12% -15% | 0.62 | 0.64 | 2.75 | +12% -15% | 0.73 | 0.75 | |
10 | 17 | 2.3 | 0.82 | 0.84 | 2.75 | 0.97 | 1.00 | |||
15 | 21.3 | ±0.5mm | 2.8 | 1.26 | 1.30 | 3.25 | 1.45 | 1.49 | ||
20 | 26.8 | 2.8 | 1.63 | 1.68 | 3.50 | 2.01 | 2.07 | |||
25 | 33.5 | 3.3 | 2.42 | 2.49 | 4.00 | 2.91 | 3.00 | |||
32 | 42.3 | 3.3 | 3.13 | 3.22 | 4.00 | 3.78 | 3.89 | |||
40 | 48 | 3.5 | 3.84 | 3.96 | 4.25 | 4.58 | 4.72 | |||
50 | 60 | ±1% | 3.5 | 4.88 | 5.03 | 4.50 | 6.16 | 6.34 | ||
65 | 75.5 | 3.8 | 6.64 | 6.84 | 4.50 | 7.88 | 8.12 | |||
80 | 88.5 | 4.0 | 8.34 | 8.59 | 4.75 | 9.81 | 10.10 | |||
100 | 114 | 4.0 | 10.85 | 11.18 | 5.00 | 13.44 | 13.84 | |||
125 | 140 | 4.5 | 15.04 | 15.49 | 5.50 | 18.24 | 18.79 | |||
150 | 165 | 4.5 | 17.81 | 18.34 | 5.50 | 21.63 | 22.28 |
Quality first: production and inspection in strict accordance with
production standards;
Price advantage: discounts based on real market prices;
Transaction security: There will be no loss of customer funds;
After-sales guarantee: the customer's problem is our problem;
Long-term cooperation: quality assurance, price advantage, sincere
service can last for a long time.
Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel
coils, cold-rolled steel coils, galvanized steel coils,
color-coated steel coils, section steel, steel pipes, steel wires,
metal mesh, stainless steel, aluminum, copper and other metal
products integrated large enterprises. Five production and sales
bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan
and Tai'an, with more than 100 production lines, 4 nationally
recognized laboratories, 2 technical engineering centers, and 5
enterprise technology centers. Products are exported to more than
50 countries and regions such as North America, South America,
Europe, Africa, Oceania, Middle East, and Southeast Asia.