Yixing spring half-pipe diameter of 100 cheap spring semicircle drains, Ω-type half-pipe, drainage tunnel semicircle 186 == 03793 == 535 Ω type half-pipe specifications common specifications TY50mm.80mm.100mm. Height of 25-40mm .45-50 mm.55-60mm Jiang Tai Technology Co., Ltd. perennial supply and drainage products to a number of construction units. Each unit has received high praise. Welcome patrons Ω type semi drains. Half-pipe .Ω type drain tunnel semicircle Drain Ω type semi-drain also known as half-pipe .Ω type drain tunnel semicircle drainage pipes. It is made of high strength spring hard wire, rust treatment by phosphoric acid, outer coating PVC coating wrapped with geotextile composite film after heat drain adhesive from the semi-circular spring semicircle drains, Ω-type half-pipe, drainage tunnel semicircle