NEW 6 inch 400psi high pressure TPU layflat hose for mine emergency drainage

A strategic partner in domestic market, need 6 inch 400psi TPU layflat hose for mine emergency drainage.It is a new products for us, as the work pressure of 6 inch flat hose is from 200psi to 300 psi normally. We tested all the physical data ten times before the quantity production. Such as work pressure,testing pressure(2 times W.P),bursting pressure(3 times W.P) and tensile strength.