今天小編來(lái)跟大家一起探討一下鋼管的專(zhuān)業(yè)術(shù)語(yǔ)?？赐赀@篇文章，相信需要鋼管的朋友就應該知道該如何采購了。
Today, I want to discuss the technical terms of steel pipes with you. After reading this article, I believe that those who need steel pipes should know how to purchase them.
首先是鋼管規格，鋼管的規格是外徑乘壁厚。比如325乘10，它表達的是鋼管的外徑是325毫米，壁厚是10毫米。每米的理論重量計算公式：（外徑-壁厚）x壁厚x0.02466。
The first is the steel pipe specification, which is the outer diameter multiplied by the wall thickness. For example, 325 times 10 represents that the outer diameter of the steel pipe is 325 mm and the wall thickness is 10 mm. Calculation formula of theoretical weight per meter: (outer diameter wall thickness) x wall thickness x 0.02466.
其次是壁厚公差。生產(chǎn)過(guò)程中由于實(shí)際尺寸難以達到理想要求，因此國家標準中規定了實(shí)際厚度允許有一定的偏差。厚的叫正偏差，薄的是負偏差，國家標準公差范圍是正負10%。當然憑借我們現在的設備和技術(shù)，所生產(chǎn)的鋼管兒也沒(méi)有國標范圍那么大。
The second is the wall thickness tolerance. In the production process, the actual size is difficult to meet the ideal requirements, so the national standard stipulates that the actual thickness is allowed to have a certain deviation. The thick one is called positive deviation, the thin one is negative deviation, and the national standard tolerance range is plus or minus 10%. Of course, with our current equipment and technology, the steel pipes produced are not as large as the scope of the national standard.
最后是交貨長(cháng)度。以直縫鋼管為例，如果沒(méi)有特殊要求，我們的產(chǎn)品嚴格按照國標要求，一般為6米定尺，長(cháng)度誤差在±3cm。
Finally, the delivery length. Take the straight seam steel pipe as an example. If there are no special requirements, our products are strictly in accordance with the requirements of the national standard, which is generally 6 meters long, with a length error of ± 3 cm.
那么定尺和倍尺是什么意思呢？比如說(shuō)。說(shuō)定尺3米就按3米交貨。倍尺三米的意思，就是6米，9米或者12米交貨。
So what do you mean by fixed ruler and multiple ruler? for instance. It was agreed that the delivery would be 3 meters at a fixed length of 3 meters. Three times the length of a foot means delivery of six meters, nine meters or twelve meters.
通過(guò)本期的講解，你是否對鋼管的選擇和使用有了更加深入的了解呢？歡迎大家評論區補充，記得點(diǎn)贊關(guān)注哦。
Do you have a deeper understanding of the selection and use of steel pipes through this explanation? Welcome to the comment area to add, remember to like and follow.