2011 Thick-walled Seamless Steel Tube Knowledge Kunlian Steel Pipe Provided

Thick-walled seamless steel pipe production manufacturing process can be divided into cold drawing, cold rolling, hot rolling, thermal expansion of the four basic ways, the steel pipe material is 10 #, 20 #, 35 #, 45 # known as ordinary steel pipe, 16Mn Between the ordinary steel pipe and the alloy steel pipe is called low-alloy steel pipe, the material of the steel pipe is 27SiMn, 12Cr1MoV, 10CrMo910, 15CrMo, 35CrMo and stainless steel pipe are collectively referred to as alloy steel pipe. Divided into structural seamless steel tubes according to the purpose; seamless steel tubes for transportation; seamless steel tubes for boilers; high-pressure seamless steel tubes for boilers; high-pressure seamless steel tubes for fertilizer equipment; seamless steel tubes for geological bricks exploration; Seamless steel pipe; seamless steel pipe for oil cracking; seamless steel pipe for shipbuilding; cold-drawn cold-rolled precision seamless steel pipe; Seamless steel pipe is represented by the method of outer diameter, wall thickness, thick-walled seamless steel pipe is mainly used for mechanical processing, coal, hydraulic steel, and other purposes.
Thick-walled seamless steel pipe classification: hot-rolled thick-walled seamless steel pipe, cold-rolled thick-walled seamless steel pipe, cold-drawn thick-walled seamless steel pipe, extruded thick-walled seamless steel pipe, pipe jacking.
Thickness of seamless steel pipe theoretical weight calculation formula: Weight per meter W = 0.02466 * S (DS) Symbol Meaning: D = outside diameter S = wall thickness thick-walled seamless steel pipe specification table:
Specification Specifications Specification 4*1/6-14*1-3 38*5.5 89*5 133*18 14*3.5 42*3 89*5.5 159*6 14*4 42*3.5 89*6 159*6.5 16* 3 42*4 89*7 159*7 18*2 42*5 89*7.5 159*8 18*3 42*6 89*8 159*9.5 18*4 42*8 89*9 159*10 18*5 45 *3 89*10 159*12 19*2 45*4 89*11 159*14 21*4 45*5 89*12 159*16 22*2.5 45*6 108*4.5 159*18 22*3 45*7 108*5 159*20 22*4 48*4 108*6 159*28 22*5 48*4.5 108*7 168*6 25*2.5 48*5 108*8 168*7 25*3 48*6 108* 9 168*8 25*4 48*7 108*10 168*9.5 25*5 48.3*12.5 108*12 168*10 25*5.5 51*3 108*14 168*11 27*3.5 51*3.5 108*15 168 *12 27*4 51*4 108*16 168*14 27*5 51*5 108*20 168*15 27*5.5 51*6 114*5 168*16 28*2.5 57*4 114*6 168*18 28*3 57*5 114*7 168*20 28*3.5 57*5.5 114*8 168*22 28*4 57*6 114*8.5 168*25 30*2.5 60*4 114*9 168*28 32* 2.5 60*4 114*10 180*10 32*3 60*5 114*11 194*10 32*3.5 60*6 114*12 194*12 32*4 60*7 114*13 194*14 32*4.5 60 *8 114*14 194*16 32*5 60*9 114*16 194*18 34*3 60*10 114*18 194*20 34*4 76*4.5 133*5 194*26 34*4.5 76*5 133*6 219*6.5 34*5 76*6 133*7 219*7 34*6.5 76*7 133*8 219*8 38*3 76*8 133*1 0 219*9 38*3.5 76*9 133*12 219*10 38*4 76*10 133*13 219*12 38*4.5 89*4 133*14 219*13 38*5 89*4.5 133*16 219 *14 Specification Specifications Specification 219*16 273*36 356*28 426*12 219*18 273*40 356*36 426*13 219*20 273*42 377*9 426*14 219*22 273*45 377* 10 426*17 219*24 298.5*36 377*12 426*20 219*25 325*8 377*14 426*22 219*26 325*9 377*15 426*30 219*28 325*10 377*16 426 *36 219*30 325*11 377*18 426*40 219*32 325*12 377*20 ​​426*50 219*35 325*13 377*22 457*9.5 219*38 325*14 377*25 457*14 273*7 325*15 377*32 457*16 273*8 325*16 377*36 457*19 273*9 325*17 377*40 457*24 273*9.5 325*18 377*45 457*65 273* 10 325*20 377*50 508*13 273*11 325*22 406*9.5 508*16 273*12 325*23 406*11 508*20 273*13 325*25 406*13 508*22 273*15 325 *28 406*17 558.8*14 273*16 325*30 406*22 530*13 273*18 325*32 406*32 530*20 273*20 325*36 406*36 570*12.5 273*22 325*40 406*40 610*13 273*25 325*45 406*55 610*18 273*28 356*9.5 406.4*50 610*78 273*30 356*12 406.4*55 624*14.2 273*32 356*15 406* 60 824*16.5 273*35 356*19

Saliva Antigen Test

The COVID-19 Antigen Saliva Test kit is a lateral flow immunoassay intended for the preliminary screening and qualitative detection of nucleocapsid protein antigen from severe acuterespiratorysyndrome coronavirus SARS-CoV-2which causesthe Coronavirusdisease(COVID-19),in direct saliva sample from individuals suspected of coVD-19 by their healthcare provider within the first seven days of symptom onset.The COVID-19 Antigen Saliva Test kit is for professional use only and is intended to be used as an aid in the diagnosis of SARS CoV-2 infection.
SARS-CoV-2is anenvelopedsingle-stranded RNAvirus ofthe Baenus COVD-19 is an acute respiratory infectious disease. People are generally susceptible.Currently. the patients infected bytheSARS-CoV2are the main source ofinfection:asvmptomatic infected peope car also be an infectious source Based on thecurrentepidemiologica investigation, the incubation period is 1to 14 daysmostly 3to 7 days The main manifestations include feverfatigue and drycough.Nasa congestion, runny nosesore throatmyalgia and diarhea are found in a few cases.
Results are for the identification of SARS-CoV-2 nuceocapsid protein antigen. The SARS-CoV-2 antigen is generally detectable in upper respiratory specimens during the acute phase ofinfectionPositive results indicate the presence of SARS-CoV-2viralantigenshowever cinicai corelation with patient history and other diaanostic information is key to determine status of infection.Positive results don't preclude bacterialinfection or co-infection with other yiruses.eaatveresuts To patients with symptom onset for more than seven days should be treated as presumptive and confirmation with a molecular assayand patient management may be performed according to local regulations as needed.

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