Product Name: Fuel Tank Truck Manhole Cover Model NO.: GY801A-580/560 Material: Aluminum Size: 20" Product Name: Alloy Manhole Cover Trademark: DESEINOR Transport Package: Carton Specification: 2pcs/CTN Origin: Xuzhou HS Code: 8708996000 Product Description Fuel Tanker Truck Manhole Cover GY801A-560/580Manhole Cover is installed on the top of the tank to prevent the fuel leakage when tank is over rolled .Built in P/V vent to ajust the pressure when there is pressure difference between inside and outside the tank .it will aytomatically inlet or eshaust air when there is acccident or under high temperature .it will adjust the pressure so that it can ensure the safety and environmental protection .it has second class open design,whe n open the up binder plate .it will release the pressure out to prevent the worker from pushing over .in the main plate of the manhole ,there are two blinding holes which canbe installed with optic sensor ,dip tibe or external vacuum valve according to the user's demands .it is suitable to transport petroleum ,diesel ,kerosene and the other light oil .Technical SpecificationsDiameter560/580Working Pressure0.6MpaEmergency Open Pressure21 KPa -32KPaMax. Emergency Vent Rate7000m3/hMaterialsAluminum AlloyWorking Temperature-20ºC~+70ºCFAQ1. What is your terms of packing?A: we pack our goods in neutral white boxes and brown cartons.2. What is your terms of payment?A: T/T 30% as deposit, and 70% before delivery.3. What is your terms of delivery?A: EXW, FOB, CFR, CIF, DDU.4. How about your delivery time?A: It will take 5-10 days after receiving your advance payment.5. What is your sample policy?A: We can supply the sample, but the customers have to pay the sample cost and the feight cost.6. Do you test all your goods before delivery?A: Yes, we have 100% test before delivery7: How do you make our business long-term and good relationship?We keep good quality and competitive price to ensure our customers benefit . We respect every customer as our friend and we sincerely do business and make friends with them.