As a pipeline of oil and natural gas, spiral pipe has its own characteristics: 1. The amount of use is large, because the specifications of A572 Grade 42, SA572 Grade 50 steel, spiral pipe used in a project are often diversified. During the forming process of the spiral pipe, the steel plate deforms evenly, the residual stress is small, and the surface does not occure scratches. 2. The spiral pipe is used in a complex environment, and the quality must be guaranteed, otherwise it will delay the follow-up project progress.
Decarburization in A572 Grade 42, SA572 Grade 50 steel, wear resistant plate is an important reaction in steelmaking process. During the decarburization process, a large number of carbon monoxide bubbles are produced, which makes the molten steel temperature and chemical composition uniform, and can effectively remove the gas and non-metallic inclusions in the molten steel. Because decarburization can play such an important role, in steelmaking, the average carbon content of furnace charge always exceeds the specified carbon content of steel, so as to oxidize the surplus carbon in the oxidation period.
The blanking of the structural steel plate is first to find 90 degrees, and then use a tape measure and a powder line to draw the cutting range. According to the thickness of the carbon steel plate plus the cutting allowance, drilling is required. For the deep processing of A572 Grade 42, SA572 Grade 50 steel structural steel sections or profiles: First use a square ruler or a curved ruler to find 90 degrees, and then use a square ruler or a ruler to cut the line and add the cutting margin to the hole.
When providing technical services on site, the after-sales personnel shall strictly abide by the safety rules and regulations of the construction site, consciously take safety protection measures (such as wearing safety helmet when entering the construction site), accept the supervision and management of the site; without permission on the construction site, they shall not dismantle, smear or damage any goods; the commissioning of contract goods shall be carried out under the supervision of the site supervisor If necessary, it shall be approved by the site supervisor or the person in charge of the project department.