Our company is a professional ductile iron pipe fittings development, design, manufacturing, sales and service as one of professional manufacturers. 1. Trench excavation 2. Trench bracing designed cast iron pipe fittings manufacturer in accordance with factors trench soil, groundwater, slotted section, loading conditions, require a solid and reliable cast iron pipe fittings scope to prevent landslides, shall not prejudice the support tube and pipe steady. 3. T-type interface in a vertical or horizontal pipe bend should be located buttress. Should be determined according to buttress size 4 diameter, angle, work pressure and other factors calculated. When transporting drinking water pipes shall not pass through poison contaminated areas, such as the need to pass through the protective measures to be taken. 5. Where ductile iron pipe socket connection must be established buttress calculated, see the National Building Standard. 6. Ductile iron pipe outside the anti-corrosion coating deposited tube should be based on soil conditions to select galvanized and epoxy asphalt coating or coatings higher requirements. 7. Piping installed, after pressure test cast iron pipe fittings, it is appropriate low chloride water flushing and disinfection of 0.03% aqueous solution of potassium permanganate My company has been adhering to the "integrity of management, quality first" business philosophy. Willing and friends around the world together with leading industry trend! Cast iron pipe fittings points 1. Trench excavation trench bottom width shall be the following equation: B = D1 +2 (b1 + b2) where: B-pipe trench excavation width bottom (mm) width of the outer edge of the structure of D1-pipe (mm ) b1-face side of the duct width (mm) b2-side of the pipe support width (mm) 2. Be designed according to the factors supporting the trench trench soil, groundwater, slotted section, loading conditions, require solid and reliable, to prevent landslides, shall not prejudice the support tube and pipe steady. 3. T-type interface in a vertical or horizontal pipe bend should be located buttress. Buttress size should be determined based on the calculated diameter, angle, work pressure and other factors. Yangtze cast iron pipe fittings manufacturer [_] _ Shandong cast iron pipe fittings provided by the Yangtze casting. Search for "flexible cast iron pipe" fly supplier network operators choose to have the whole Union certification: Changyi City, Shandong Province, the Yangtze River Foundry (www.changjiangzhuzao.com), trustworthiness and reliability, now click on the "Business League Support" on page live chat with us now!