Our pipes are manufactured to meet both the Normal Duty (Class 51) and Heavy Duty (Class 34) pipe classifications, which represent pipe stiffness of 100kPa and 300 kPa, respectively. Our manufacturing process is designed to produce pipes of the highest quality, ensuring they are durable and reliable for all your sewer and drain needs. With our pipes, you can rest assured that you are getting the best quality products that meet all the necessary industry standards and specifications.