I dentification methods THREE ofseamless steel pipes or pipelines:
Inferior quality seamless steel tube material containing impurities,much smaller density of the pipes, and size out-of-tolerance is severe, so in the absence of vernier caliper, we can weigh it to check.
In general the whole amount to match the effect will be better, mainly considering the cumulative error and probability theory to this problem.
Standards:ASTM,ASME,API 5L/5CT
Steel grades:A53,A106,A519,SA192,A179.
Gr.B,X42,X46,X56,X65,X70,X80 and more.
Outer diameter:10.3mm to 762mm.
DN8 to DN650
1/8 to 42 inches.
Wall thickness:2mm to 60mm.
Pressure: Sch5s ,SCH10,SCH15,SCH40,STD,SCH100,SCH160,XXS.
Length:Random length, Fixed length
normally 4~16m.
Surface treatment:Galvanized or customized,3PE,Varnish coating,
black oil painting,rust-proof painting and more.
Usage:apply to the general structure,engineering support,mechanical processing etc.
Seamless steel pipe used
1. Construction are: pipeline under most more, ground water, hot water boiler used when building and so on.
2. Mechanical processing, bearing sleeve, processing machinery parts, etc.
3. The electrical class: gas pipeline, water electricity fluid.
4. Wind farms anti-static tube, etc.
The process :
Tube billet heating - inspection - skin - - - perforation, pickling, grinding, dry lubrication, welding head, cold drawing, solid solution treatment, pickling, pickling passivation - inspection - cold rolled - oil - cutting head - dry - polishing, polishing, inspection, identification, finished product packaging
