• 螺旋管的相關知識
  • 本站編輯:杭州亨鑫鋼鐵有限公司發布日期:2019-07-17 09:33 瀏覽次數:
螺旋管也稱螺旋鋼管或螺旋焊管,是將低碳素結構鋼或低合金結構鋼鋼帶按一定的螺旋線的角度(叫成型角)卷成管坯,然后將管縫焊接起來制成,它可以用較窄的帶鋼生產大直徑的鋼管。
 
Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is a low carbon structural steel or low alloy structural steel strip coiled into billet according to a certain spiral angle (called forming angle), and then welded pipe seam. It can produce large diameter steel pipe with narrow strip.
 
有關螺旋管生物的相關介紹:
 
Relevant introduction of spiral tube biology:
 
 
 
螺旋管的外徑約為30毫微米,內徑約為10毫微米,相鄰螺旋間距約為11毫微米。螺旋管的每1周由6個核小體圍成,H1組蛋白位于螺旋管腔的內表面,對維持螺旋管的結構起著重要作用。
 
The outer diameter of the helical tube is about 30 nanometers, the inner diameter is about 10 nanometers, and the distance between adjacent helixes is about 11 nanometers. The helical tube is surrounded by six nucleosomes every week. H1 histone is located on the inner surface of the helical lumen and plays an important role in maintaining the helical tube structure.
 
再來看下螺旋管的相關范圍:
 
Let's look at the scope of the helical tube.
 
螺旋管主要用于石油、天然氣的輸送管線,其規格用外徑*壁厚表示。適用于水、污水、空氣、采暖蒸汽和可燃性流體等普通低壓流體輸送管道用鋼管,也適用于具有類似要求的其他流體輸送管道用鋼管。
 
Spiral pipes are mainly used for oil and natural gas pipelines, and their specifications are expressed by external diameter * wall thickness. It is suitable for steel pipes for water, sewage, air, heating steam and flammable fluids and other common low-pressure fluid pipelines. It is also suitable for other fluid pipelines with similar requirements.
 
現在螺旋管的常用標準一般分為:SY/T5037-2000(部標、也叫 普通流體輸送管道用螺旋縫埋弧焊鋼管)、GB/T9711.1-1997(國標、也叫石油天然氣工業輸送鋼管交貨技術條件第一部分:A級鋼管(到目前要求嚴格的有GB/T9711.2 B級鋼管))、API-5L(美國石油協會、也叫管線鋼管;其中分為PSL1和PSL2兩個級別)、SY/T5040-92(樁用螺旋縫埋弧焊鋼管)。
 
At present, the commonly used standards of spiral pipe are generally divided into: SY/T5037-2000 (ministerial standard, also known as spiral submerged arc welded steel pipe for ordinary fluid transmission pipeline), GB/T9711.1-1997 (national standard, also known as technical conditions for delivery of oil and gas industry pipeline Part I: A-grade steel pipe (up to the present strict requirements are GB/T9711.2 B-grade steel pipe), AP. I-5L (American Petroleum Association, also known as pipeline steel pipe; which is divided into two levels of PSL1 and PSL2), SY/T5040-92 (spiral submerged arc welded pipe for piles).
 
國內常用螺旋管材質一般有:Q235A、Q235B、Q345、L245、L290、X42、X52、X60、X70、X80、0Cr13、1Cr17、00Cr19Ni11、1Cr18Ni9、0Cr18Ni11Nb。
 
Commonly used spiral tube materials in China are: Q235A, Q235B, Q345, L245, L290, X42, X52, X60, X70, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb.