Metropolitan specializes in the production of various steel material specifications seamless steel tubes, seamless steel pipe plant reasonable price, timely delivery. Mechanical properties of steel is to ensure that the steel end-use properties (mechanical properties) is an important indicator in the steel standards, depending on the usage requirements of the tensile properties (tensile strength, yield strength or yield point elongation) and hardness , toughness index, as well as high and low temperature performance and other user requirements. Tensile strength (σb) during the tensile specimen, the pull-off exposure to the most vigorous (Fb) 20g seamless steel pipe plant, divided by the original specimen cross-sectional area (So) the resulting stress (σ), called tensile (σb), in units of N / mm2 (MPa). It represents a metal material to resist damage maximum capacity under tension. Liaocheng Jinghua Pipe Co., Ltd. specializes in the production of various material specifications 15crmo seamless steel pipe plant, reasonable price, timely delivery. Service Mission: come without package loss, not loading goods are not satisfied, after finishing the procedures payments. Seamless quality test methods: chemical analysis: chemical analysis, instrumental analysis method (C-S-infrared instrument, direct reading spectrometer, zcP etc.). Pipe geometry and appearance inspection: ① pipe wall thickness check: micrometer, ultrasonic thickness gauge, ends not less than 8:00 and recorded. ② pipe diameter, ovality check: calipers, vernier caliper, ring gauge, measure the maximum points and minimum points. ③ pipe length check: steel tape, manual, automatic length measurement. ④ pipe bending degree examination: ruler, level-foot (1m), feeler, thin measuring curvature per meter, length of curvature. ⑤ pipe end face bevel angle and blunt edge inspection: Square, card board. Liaocheng Jinghua Pipe Co., Ltd. specializes in the production of various materials specifications of seamless steel tubes, seamless steel pipe plant 35crmo reasonable price, timely delivery. It refers to the final plastic deformation or final heat treatment state of delivery of the product. Generally without heat treatment delivery, said hot-rolled or cold drawn (rolled) state or the state of production; after heat treatment, said heat treatment delivery, or called normalizing heat treatment according to category (normalization), quenching, solution annealing state. When ordering, the delivery status should state in the contract. Weight Delivery status: 45mn seamless steel pipe plant | Jinghua Pipe (certified) | by Liaocheng seamless steel pipe plant Weifang Jinghua Steel Pipe Co., Ltd .. Liaocheng Jinghua Steel Pipe Co., Ltd. (www.sdwfgc.com) Shandong Liaocheng, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Pipe leadership in Beijing with the staff warmly welcome all inquiries negotiations to create a better future for Jinghua pipe.