530 * 10 seamless steel pipe manufacturers, low price (certified), Ya'an seamless steel pipe

 Mengcun dragon Acer seamless steel pipe professional management .377 20 # steel, seamless steel pipe wall thickness complete 630 * 10 manufacturers, with large spot, low price and good quality. Welcome to the new and old customers to inquire. Mechanical properties of steel is to ensure that the steel end-use properties (mechanical properties) are an important indicator of 530 * 10 seamless steel pipe manufacturers, it depends on the chemical composition and heat treatment system 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 properties. 1. Tensile strength (σb) samples during stretching, the pull-off exposure to the most vigorous (Fb), divided by the original specimen cross-sectional area (So) stress (σ) obtained seamless steel pipe, called the tensile strength (σb), in units of N / mm2 (MPa). It represents a metal material to resist damage under tension maximum capacity. 2. The metal material yield point (σs) having a yield phenomenon, the specimen during the tensile force is not increasing (constant) could continue stress elongation, called yield point. If power down occurs when the 45 # seamless steel pipe manufacturers, should distinguish between lower yield point. Unit yield point of N / mm2 (MPa). The yield point (σsu): sample yield and maximum stress occurs first drop before; lower yield point (σsl): When excluding the initial transient effects, the yield phase of the minimum stress. 3. Elongation (σ) in the tensile test specimens fractured gauge the increase in the percentage of its original length and gauge length, called elongation. With σ expressed in units of%. 4. Reduction of area (ψ) in the tensile test, the sample to reduce the percentage of the maximum amount of the original cross-sectional area of ??its cross-sectional area of ??the reduced diameter at the pull-off, known as section shrinkage. Ψ expressed in units of%. 5. hardness index metal material to resist indentation capacity hard objects surface, called the hardness. Depending on the test methods and scope, can be divided into Brinell hardness, Rockwell hardness, Vickers hardness, Shore hardness, micro-hardness and high temperature hardness. Pipe commonly used for Brinell, Rockwell, Vickers hardness of three. Mengcun dragon Acer seamless steel pipe professional management .473 * 16 20 # material, thickness range, with large spot, low price and good quality. Welcome to the new and old customers to inquire. 1. Hot-rolled seamless steel pipe main production processes (△ main inspection process): tube preparation and examination △ → tube heat pipe rolling → → → perforated steel reheating → set (minus) diameter → △ → finished tube heat straightening → finishing → inspection △ (destructive, chemical, Taiwan prosecutors) → cold-storage 2. (pull) seamless steel main production processes: blank ready → pickling → cold rolling lubrication (pull) → heat treatment → straightening → fine whole → test 530 * 10 seamless steel pipe manufacturers, low price (certified), Ya'an seamless steel dragon by Mengcun Hui Autonomous County Hongye steel center. Mengcun Hui Autonomous County dragon Wang Yip Pipe Center (www.hebeizhihang.com/)(www.mcflgg.com) Hebei Cangzhou, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In mengcun dragon pipe leading the staff warmly welcome all inquiries negotiations to create the dragon steel mengcun a better future.