Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of milling of cast iron pipes 20 # seamless steel pipe, ductile iron for high-quality seamless steel pipe 20 # weight, flexible cast iron pipe fittings, cast iron pit wells quality of our products. Mechanical properties of steel is to ensure that the steel end-use properties (mechanical properties) is an important indicator, it depends on the chemical composition and heat treatment of steel. In the steel standard, depending on the application requirements, the provisions of the tensile properties (tensile strength, yield strength or yield point elongation) and hardness, toughness index, as well as user requirements of high and low temperature performance. Building Materials Co., Ltd. mainly produces Liaocheng Shunxiang variety of cast iron pipe 20 # seamless steel milling cutter wholesale, high quality ductile iron pipe, flexible cast iron pipe fittings, cast iron pit wells quality of our products. Steel process performance test: ① flattening test: Round Sample C-shaped specimen (S / D> 0.15) H = (1 +2) S / (α + S / D) L = 40 ~ 100mm deformation coefficient per unit length = 0.07 ~ 0.08 ② ring pull test: L = 15mm crack for qualified ③ flaring and curling trials: Quill taper of 30 °, 40 °, 60 ° ④ bending test: can replace flattening test (for large diameter pipe terms) Taizhou 20 # seamless steel pipe, seamless steel pipe 20 # Group Shunxiang ductile pipe provided by Shunxiang ductile pipe. This information consists of: providing Liaocheng Shunxiang Building Materials Co., Ltd. (www.lcsxjc.com), we are business alliance member, the integrity of the whole network authentication provider. Feel free to contact us, contact: Manager Ge