... , air domes, banners, truckcovers. Tensile membranes high frequency welding machine 1. Professional for welding tent, canvas, inflatable PVC ... , fabric, tarpaulin products, blow air toys, umbrellas, banners, raincoat, bath shade, air bed, oil bag, ... 8T85RB / E3130 Anti-spark thyratron tube: NL5557 Pressure way air pressure gap of electrodes: 250mm / 150mm / 150mm upper ...