Galvanized Steel Grating Channel Cover for Drainage Ditch Road

1) Installation position: Trench installed on ground (indoor/outdoor ground), gutter installed on roof (eave/roof middle); 2) Function: Trench collects and discharges ground rainwater, sewage, industrial wastewater; gutter collects and discharges roof rainwater; 3) Section: Trench depth larger (100-600mm), can match cover; gutter depth shallower (100-400mm), generally no cover; 4) Slope: Trench slope 0.3-1.0%, gutter slope 0.3-0.5%;

Trench material selection basis: 1) Use environment: General industrial plants, warehouses use galvanized trench (economical, anti-corrosion 15-25 years); food factories, pharmaceutical factories, kitchens use stainless steel 304 trench (anti-corrosion, easy to clean, meets hygiene requirements); chemical plants, sewage treatment plants, coastal areas use stainless steel 316 trench (resists strong corrosion); commercial buildings, municipal engineering use stainless steel 304 or galvanized trenc

Trench size selection basis: 1) Catchment area/flow: Larger flow, needs larger trench section. Generally flow <5L/s use 100-150mm width, 5-10L/s use 150-200mm width, 10-20L/s use 200-300mm width, >20L/s use 300-500mm width; 2) Use place: Kitchens, bathrooms use 100-150mm width; plants, warehouses use 200-300mm width; roads, plazas, parking lots use 300-500mm width; 3) Depth: Depth generally 1-1.5 times width, ensure no overflow during drainage, and convenient cleaning;

Trench installation steps: 1) Base treatment: Excavate trench or reserve trench in concrete ground, clean base, pour concrete cushion (thickness >=100mm), check flatness and slope; 2) Layout & positioning: Mark trench installation position and slope per drawing (generally 0.3-1.0%, slope toward inspection well), mark section positions and inspection well positions; 3) Trench installation: Place trench sections on cushion, adjust position and slope, fix with concrete or mortar, section lap (lap l

Stock from 10 meters 3-7 days, common sizes (galvanized/stainless steel 304 200x200mm 1.5-2.0mm) same-day pickup; special materials (stainless steel 316), special sizes, custom bending, custom length and matching cover processing from 20 meters 7-15 days. Stainless steel covers, galvanized covers, grating covers, inspection wells, sealant etc. matching products and installation technical guidance available.