The centrifugal gray cast iron straight pipes manufactured by our company feature flexible connections and are primarily used for drainage systems. These products fully comply with standards such as ISO 6594, DIN 19522/EN 877, GB 12772, and ASTM A 888. They feature straightness, uniform wall thickness, a dense structure with high strength, smooth inner and outer walls, and are free of casting defects. These pipes offer simple installation, easy maintenance, a long service life, and are environmentally friendly, fire-resistant, and noise-free.