A53 A B A106 BC Mild Carbon Spiral Welded Steel Pipe For Boiler Annealed Finishing

Detailed specification:

Spiral welded pipe is manufactured from steel coil. The coil is unwound and then welded while it is being turned into the shape of the pipe. Changing the angle of the spiral and the thickness of the coil is all that is needed to change from one pipe size to another. The two sides of the double submerged arc weld penetrate the full thickness of the steel to ensure the strength of the finished pipe. Full scale tests have shown that high quality spiral welded pipe is as strong as API pipe. The strength and flexible manufacturing of spiral welded pipe make it the product of choice for a variety of applications.

Production Standard, Grade, Steel No:

Standard:

JIS, ASTM, API, BS, GB

Grade Group:

A53-A369, 16Mn, ST35-ST52, Q195-Q345

Standard2:

JIS G3444-2006, ASTM A53-2007, API 5CT, API 5L, BS EN10296, GB/T 3091-2001

Grade:

A53(A,B), A106(B,C), 16Mn, St37, St52, St37-2, Q235, Q345

Common materials of welded pipe: Q235A,Q235C,Q235B,16Mn,20#,Q345,L245,L290,X42,X46,X60,X80,0Cr13,1Cr17,00Cr19Ni11,1Cr18Ni9,0Cr18Ni11Nb and so on

Delivery Condition:

Annealed, Normalized, Normalized and Tempered

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength,

Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

Black painted/3PE/3PP/FBE/galvanizing etc.

Application

For high, middle, low pressure boiler and pressure purpose