General engineering service
October 31, 2017
也称为碳素钢,碳钢metal alloy, a combination of two elements, iron and carbon, where other elements are present in quantities too small to affect the properties. The only other alloying elements allowed in plain-carbon steel are manganese (1.65% max), silicon (0.60% max), and copper (0.60% max). Steel with a low carbon content has the same properties as iron, soft but easily formed. As carbon content rises the metal becomes harder and stronger but less ductile and more difficult to weld. Higher carbon content lowers steel’s melting point and its temperature resistance in general. ASTM […]
March 22, 2017
Mechanical Tubing: ASTM A519:ASTM A519 American Society for Testing Material Tube for Structures:DIN 1629 :Deutsches Institut fǖr Normung Size: OD: 10.3mm-711.2mm WT: Hot finish: 0.250″-4.00″ Cold drawn: 0.035″-0.875″ Length: Random Length,Fixed Length, SRL,DRL Heart treatment: Annealed, Normalized,Stress relieved ,Cold Uses: For manufacture of pipelines,vessels,equipment,pipe fittings and steel structures. Steel Grade Type of deoxidization (R, killed (including semi-killed)) (RR,fully killed) Chemical Composition, % by mass Symbol Material Number C P S N¹) Addition of nitrogen fixing elements (e.g.not less than 0,020% Al total St37.0 1.0254 R 0.17 0.040 0.040 0.009²) – St44.0 1.0255 R 0.21 0.040 0.040 0.009²) – St52.0³) […]
March 11, 2017
ASTM A53B ERW Pipe is meant for mechanical and pressure applications and is likewise appropriate for normal usages in steam, water, gas, and air lines. So, ASTM A53 spec pipe is a very common however extensively appropriate carbon steel pipe specification. And A53B ERW is more popular because ERW pipelines is less expensive than SAW pipes and seamless pipeline, but with appropriate mechanical residential or commercial properties. Product Name ASTM A53B ERW Steel Pipe Sch40, SRL ERW pipe A53B ERW Pipe Diameter 1/2 inch ~ 26 inch Diameter Tolerance acc. to ASTM A53, +/-1% of outside diameter A53B ERW Wall Thickness […]
March 10, 2017
ASTM A106是在3个等级A，B的黑色碳钢管用于高温，无缝管线的高压服务，以及不同强度下进行。ASTM / ASME A-106 / SA-106级光滑的管道是我们的碳钢的最广泛使用的等级中，是容易获得的前股票的所有标准密度高达SCH160。NPS 1-1 / 2和下可热被完成或冷拔。NPS 2和更大的应热结束，除非另有规定。表面积完成标准，在规范中描述。等级A和B是在广大的大小和计划数的访问，[...]
February 20, 2017
DIN 1629 Seamless Steel pipe Of Non Alloys Steels are made of unalloyed steels, it’s main grades are St 37.0, St44.0, St52.0, Din 1629 seamless steel pipes application fields are: chemical plant, vessels, pipework construction and for common mechanical engineering purposes. Normally DIN 1629 standard are manufactured with no limiting working pressure values. Working temperature is limited below 300℃. Chemical composition: Steel Grade Type of deoxidization (R, killed (including semi-killed)) (RR,fully killed) Chemical Composition, % by mass Symbol Material Number C P S N¹) Addition of nitrogen fixing elements (e.g.not less than 0,020% Al total St37.0 1.0254 R 0.17 0.040 […]