无缝异型钢管厂家通常，按照钢管的用途及其工作条件的不同，应对钢管尺寸的允许偏差、表面质量、化学成分、力学性能、工艺性能及其他特殊性能等提出不同的技术条件。机械用无缝异型管根据用途要求须有较高的尺寸精度、良好的力学性能和表面状态。如轴承管要求较高的耐磨性、组织均匀和严格的内、外径公差。除做一般的力学性能检验项目外，还要做低倍、断口、退火组织(球化组织、网状、带状)、非金属夹杂物(氧化物、硫化物、点状等)、脱碳层及其硬度指标等试验。
Generally, according to the different uses and working conditions of seamless special-shaped steel pipe manufacturers, different technical conditions should be put forward for the allowable deviation of steel pipe size, surface quality, chemical composition, mechanical properties, technological properties and other special properties. Mechanical seamless special-shaped steel pipes should have high dimensional accuracy, good mechanical properties and surface condition according to their application requirements. For example, bearing tube requires high wear resistance, uniform structure and strict tolerance of internal and external diameters. In addition to the general mechanical properties test items, low-power, fracture, annealing structure (spheroidized, reticulated, banded), non-metallic inclusions (oxides, sulphides, dots, etc.), decarbonized layer and its hardness index are also tested. 不同用途的无缝异型钢管具有的技术条件
Technical Conditions of Seamless Special-shaped Steel Pipes for Different Purposes
一般无缝异型钢管用作输送水、气、油等各种流体管道和制造各种结构零件时，应对其力学性能如抗拉强度、屈服强度和伸长率做抽样试验。输送管一般在承压的条件下工作，还要求做水压试验和扩口、压扁、卷边等工艺性能试验。对于大型长输原油、成品油、天然气管线用钢管更是增加了碳当量、焊接性能、低温冲击韧性、苛刻腐蚀条件下应力腐蚀、腐蚀疲劳及腐蚀环境下强度等要求。
Generally, when seamless special-shaped steel pipes are used to transport water, gas, oil and other fluids and to manufacture various structural parts, sampling tests should be made on their mechanical properties such as tensile strength, yield strength and elongation. Conveyor pipes generally work under pressure conditions, and also require hydrostatic tests and technological performance tests such as flattening, flanging, etc. For large-scale long-distance crude oil, refined oil and natural gas pipelines, the requirements of carbon equivalent, weldability, low temperature impact toughness, stress corrosion under severe corrosion conditions, corrosion fatigue and strength under corrosive environment are increased.
把您精密管的要求告诉我们剩下的统统由我们来完成，一定会让你满意的。
Tell us the requirements of your precision tube that we will complete the rest of the unification. It will certainly satisfy you.
