Syc-h Products detail: Syc-h, integrated pressure system Model nmber tube specs tube coating tank capacity (l/gal) Syc-150h diameter:58mm*1800mm*15 heat pipe 150/40 Syc-200h diameter:58mm*1800mm*20 heat pipe 200/50 Syc-300h diameter:58mm*1800mm*30 heat pipe 300/80 Oem and customization are available. 27-42 sets inside a 20'gp