Richang Qiaoshan Trade Co., Ltd. manufacture No-Hub Cast Iron Soil Pipe, No-Hub Cast Iron Soil Fittings, No-Hub Couplings, Heavy Duty No-Hub Couplings, Flexible Coupling, Flexible Rubber End Cap, Shielded Transition Couplings, UnShielded Transition Couplings, Quick Tees, Quick Elbows Roof Drain, Floor Drain, Downspout Nozzle, Strainers and Cleanout since 1996. Our advantage: Supply full set roof drainage products in 1 stop. Include Hubless(No-hub) Cast Iron Soil Pipe and Fittings, Flexible