Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron, ductile iron pipe, cast iron pipe fittings seamless steel flexible cutting wholesale, high quality cast iron pit wells quality of our products. The yield point (σsu): sample yield and maximum stress occurs force before the first drop; lower yield point (σsl): When excluding the initial transient effect seamless stage minimum yield stress. Yield point is calculated as follows: where: Fs - the process of tensile yield strength (constant) 10 # seamless steel pipe distributors, N (Newton) So - the original specimen cross-sectional area, mm2. Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron, ductile iron pipe, cast iron pipe fittings of high quality flexible 10 # seamless steel pressure cast iron pit wells quality of our products. Our excellent steel equipment, precision seamless technical force, advanced production technology, detection means complete, factory production of cold-rolled precision light control system looks smooth, uniform thickness, no oxide layer, high precision cold-rolled precision without pipe joints can withstand high pressure, bending, flaring, flattening without cracking does not wrinkle, can do a variety of complex deformation and mechanical seamless steel processing [Erdos] | seamless steel pipe cutter wholesale | Shunxiang ductile ductile pipe by the Shunxiang tube provided. Welcome to consult Liaocheng Shunxiang Building Materials Co. (www.lcsxjc.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Manager Ge