Drainage / Ditch Cover_Security type

1. Comprehensive type and broadest range in dimension. 1.1 Material Q235 , or other equivalent material1.2 Grating Conformity Standard: YB/T4001, ANSI/NAAMM-MBG531, BS4592, AS1657, JS31011.3 Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5,20X3, 20X5, 25X3, 25X4, 25X4.5, 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, 30, 30.6, 32.5, 34, 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, 75, 80, 99,100, 101.6, 102……The sizes and dimension is not limited to above.1.4 Grating type: Bearing bar: Plain type, Plain I type, Serratd type, Serrated I type; Cross bar:Square twisted cross bar, Round cross bar2. Types of Drainage/Ditch Cover: a. Normal type; b. U type; c. Security type (anti-theft)2.1 Normal type of Drainage/Ditch Cover Embedded installation, safe and reliable, anti-thrust (not easy to shed)2.2 U type of Drainage/Ditch Cover Both ends welded with angle steel, so no need pre-embedded supporting parts.2.3Security type of Drainage/Ditch Cover Both ends connected with steel frame through gemel, so anti-theft andsafe, easy to open. 3. 11 sets of press welded (electro-forged welding) production lines creat largest production capability, flexible and controlled delivery to cater to the variety ofneeds of customers. 4. The high-tec techneque and equipment guarantee high quality of gratings. Most of machine were imported fromJapan, Germany,Switzerland,etc. 5. Capable design can make grating customized according to site requirement.