JIS seamless steel pipe specification:
Standards:JIS,ASTM,ASME,API 5L/5CT
Steel grades:G3441,G3444,G3445.
                        A53,A106,A519,SA192,A179.
                        Gr.B,X42,X46,X56,X65,X70,X80 and more.
Outer diameter:10.3mm to 1240mm.
                             DN8 to DN1200
                             1/8 to 100 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