At present, the design of oil and gas A572 Gr 42 high strength steel pipeline is based on the yield strength of steel, and high transmission work requires higher yield strength of A572 Gr 42 high strength steel steel. For welded wire pipe, the yield strength decreases after rolling and decreases with the increase of strength.
The large diameter cold drawn seamless steel pipe is a steel pipe with an outer diameter of more than 1000mm. The large diameter seamless steel pipe is made of steel ingot or solid billet through perforation and then hot rolling, cold rolling or cold drawing. If they are long, they need to remove the redundant parts, that is, cut them out. Their length A572 Gr 42 high strength steel is suitable for the length required by the construction of steel pipes.
The hot rolling method is to heat the A572 Gr 42 high strength steel steel material to about 1000 ℃ ~ 1250 ℃ and use the rolling mill to roll it. The traditional hot rolling process is generally divided into the following two steps: the first step is to use the primary rolling mill or billet rolling mill to roll the ingot, billet or continuous casting billet into a certain shape and size of billet. This kind of A572 Gr 42 high strength steel rolling process is usually called semi-finished product production, also called blank production.
For ASTM A573 Grade 70/A573 Gr.70 carbon manganese silicon steel plates, our company would issue the original mill test certificate A572 Gr 42 high strength steel EN 10204 3.1 for clients when arrange delivery, so that clients can trace the A573 Gr.70 plates origin easily.
After-sales service is an important part of measuring a product good or not. After sales service can't be ignored. Good service can really make consumers feel relieved. We have always done a good job in after-sales service, so as to bring consumers a better reference when purchasing and a better experience during use of our steel materials. We will call back and follow up the performance of our steel products regularly.
