انواع لوله های فولادی بدون درز چیست؟ Firstly, seamless steel pipes have a hollow cross-section, and many of them are used as pipelines for transporting fluids, such as oil, gas, liquefied gas, water, and some solid raw materials. در مقایسه با صفحات فولادی ضدزنگ هسته جامد چنین ...
ادامه مطلب