Unisite Group Ltd.
Model No.: USA-057
Dimension: As Per Drawing/order
Inspection: Material, Construction, Dimension, Welding Seam, N
Grade: 10#-45#, Q195-Q345, X42-X80, L245-L255 Or Other Ma
Standard: API 5L, BS 1387, GB/T 3091-2001, GB/T9711, ASTM A5
Certificate: API BV
Application: Marine Steel Structure And Dredging Field And Oil
Tolerance: High Accuracy(ISO2768, ISO5817, ISO13920); Detail:
Surface: Sa2.5 Blasted And Two Or Three Layers Painted With
Seamless Stainless Exhaust Pipes: Stainless Steel 304 Exhausting Pipes
Packaging: bulk package and bulk vessel transportation; frame container package and frame container transportation
Place of Origin: china mainland(zhejiang)
Stainless steel tube inner diameter greater than 30mm, wall thickness less than 1.2mm of stainless Steel Pipe, using the surface of the hardness tester, test HRT or HRN hardness. The inner diameter is less than 0mm, more than 4.8mm of stainless steel pipe, using the tube special for the hardness tester, test HR15T hardness. When the inner diameter of the stainless steel pipe is larger than 26mm, the hardness of the inner wall of the tube can be tested by the tester of the surface of the tube or the surface of the hardness tester.
Stainless steel resistant to atmospheric corrosion
Experience shows that the degree of corrosion of the atmosphere varies from region to region. For ease of description, it is suggested that the region is divided into four categories, namely: rural, urban, industrial and coastal areas.
The village is basically a non polluted area. The population density of the area is low, and there is no pollution.
City is a typical residential, commercial and light industrial area, the area has a slight pollution, such as traffic pollution.
Area of air pollution caused by heavy industry in industrial areas. Pollution may be due to the formation of fuel gas, such as sulfur and nitrogen oxides, or other gases released by the chemical plant or plant. Particles suspended in the air, such as dust or iron oxides produced during the process of iron and steel production, can also cause corrosion.
Coastal areas usually refer to areas that are less than a mile from the coast. However, the ocean atmosphere can be spread to the inland depth, the island is the case, the prevailing wind from the ocean, but also the bad weather. For example, the British climate condition is so, so the whole country belongs to the coastal area. If the wind is mixed with the ocean mist, especially due to the evaporation of salt accumulation, coupled with less rain, not often rain washed, the conditions of the coastal areas are more unfavorable. If there is industrial pollution, then the more corrosive.
Research work in the United States, Britain, France, Italy, Sweden and Australia has identified the effects of these regions on the atmospheric corrosion resistance of various stainless steels. Related content in NiIDI publishing "architects Handbook" and gave a brief introduction, the book table can help designers to select for a variety of regional cost benefit the best stainless steel.
It is important to determine if there are local factors that influence the use of the site. For example, the stainless steel used under the factory chimneys, used in air conditioning vent baffle near or scrap yard nearby, there is a non - General conditions.
Photos of our Stainless steel 304 exhausting pipes
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