Z-direction property plate

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Product	Code		Standard	Dimension			Application
				T(mm)	W9m)	L(m)
Z-direction property plate	Q235-Z15	B	GB/T5313-1985	12-80	1.5-3.5		Apply to the important welding structure plate for steel structure use Steel plate, shipbuilding, sea oil mining platform and boiler Pressure vessels, Which request good Anti-layered properties in thickness direction.
		C
		D
		E
		B		12-80	1.5-3.5
	Q235-Z25	C
	-Z35	D
		E
	Q345-Z15	B		12-80	1.5-3.5
		C
		D
		E
		B		12-80	1.5-3.5
	Q345-Z25	C
	-Z35	D
		E

1.1 Application

Apply to the important welding structure plate for
steel structure use Steel plate, shipbuilding, sea
oil mining platform and boiler Pressure vessels,

Which request good Anti-layered properties in thickness-direction.

1.2 Technical requirements

To thickness
direction property plate,P≤0.020, S content as per standard GB/T5313,the specification as below:

Z-direction property grade	Z15	Z25	Z35
S%≤	0.01	0.007	0.005

When the thickness≥15mm and have request thickness-direction property, the Section shrinkage of

thickness-direction property as below:

thickness- direction property grade	Section shrinkage Z%
thickness- direction property grade	The average value for three samples	The value for single sample
Z15	≥15	≥10
Z25	≥25	≥15
Z35	≥35	≥25

1.3 Ultrasonic test:

a ,Ultrasonic test should be done to thickness-direction property plates, the test method as per GB/T2970, Its Acceptance level should be indicated in contract.

b,The request for thickness-direction property plate is one of property standards in material., Its specific Composition and Mechanical Properties as per the corresponding properties of steel code. The code is identificated like: Q345B-Z15,Q345qC-Z25,Q345GJD-Z35.

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Z-direction property plate