Hot Rolled Steel Sheet
Cold Rolled Steel Sheet
Galvanized Steel Coil
      Packing Strap
Galvalume Steel Coil
Color Coated Steel Coil
      PPGL Coil
      PPGI Coil
Corrugated Sheet
Seamless Steel Pipe
      Line Pipe
      Boiler Tube
      Hydraulic Tube
      Structure Pipe
Black Welded Steel Pipe
Galvanized Steel Pipe
Profiled Bars
      H Beam
      I Beam
      Channel steel
      Angle Bar
      Wire Rod

   Tianjin Bach Steel Trade Co., Ltd.

   Tel: +86-22-24320517 

         Fax: +86-22-24325067

         Mob: +86-13602161631

      Skype: Bachsteel_Carol 

         Whatsapp: +86-18222189058



      Add: Room 36J128, JunLin Building, Boai Road, Hebei District, Tianjin, China


Latest News
The factors of influecing color coated sheet service life
2017-2-21 | Latest News

In the use of color coated panels, all aspects of the factors are likely to affect its life, mainly below three: 

First, the roof wall and fastener installation quality. The cause of the leakage of the roof of the steel plate is that the lap joint is not sticky, the joint length is too short, the roof tile and the pressure type color plate joint, the structure is not correct, not dense. Can not stand from the leading wind storms, causing leakage. Zhejiang coastal, some pressure-type color plate construction, purlin spacing is too large, too little fastening screws, lack of pull resistance, encountered a strong wind surface negative pressure, the roof was lifted off, causing a large leak. 

Second, purlin anti-corrosion ability. Single-layer roof structure commonly used open, screw through the roof and purlin connection, due to carbon steel screw corrosion caused by leakage. In recent years, there has been hidden, the screws do not reveal the roof, slit with undercut combination, through the joints in the stent and purlins connected, the structure is more complex. Although the structure changes, corrosion still exists. Purlin anti-corrosion capacity should be comparable with the pressure-type color plate, purlins and pressure-type color plate (bracket) lap joints usually can not be maintained, in the event of "acid rain" invasion, particularly vulnerable to corrosion, and even cause the structure disintegration.

Third, the fastener corrosion and gasket waterproof. Color steel plate indoor and outdoor temperature difference will make the house condensation, industrial atmosphere contains a variety of gases, these gases form acid rain, intrusion board joints directly to the screw, the screw rotten, the structure disintegrated.

Tel: +86-022-24320517   +86-13602161631   Fax: +86-022-24325067
skype: bachsteel_carol Whatsapp: +86-18222189058   
Whatsapp: +86-13602161631   Email:
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