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The pipe jacking method for the production of seamless steel pipes was proposed as early as 1892 by Heinrich Erhard in Germany. The perfo... -
Sulfur is generally regarded as a harmful element in steel , which mainly exists in the form of MnS and FeS, which can cause the thermal br... -
https://www.friend-steelpipes.com/show-16-64-1.html 1. Brand introduction S355J2 is a low alloy high strength steel, S355J2 is the European ...