Steel Pipes for Pipeline, Vessel and Equipment Structures-BoQiang Pipeline

Steel Pipes for Pipeline, Vessel and Equipment Structures

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Product Description

Steel Pipes for Pipeline, Vessel and Equipment Structures.

Standards:

ASTM A519, DIN1629, DIN2391, ASTM A513, BS6323, EN10305-1, JIS3441

Application:

It is used for manufacturing pipeline, vessel, equipment, pipe fittings and steel structure.

Main Steel Tube Grades:

St37.0, St44.0, St52.0

Chemical Composition (%):

Standard	Grade	C	Si	Mn	P	S	Cr	Ni	Cu	V
Q/BQB 203 DIN1629	ST37.0	≤0.17	0.17-0.37	0.35-0.65	≤0.025	≤0.020	≤0.25	≤0.25	≤0.25	-
	ST44.0	≤0.21	0.17-0.37	0.50-0.80	≤0.025	≤0.020	≤0.25	≤0.25	≤0.25	-
	ST55	0.33-0.41	0.17-0.37	0.50-0.80	≤0.025	≤0.020	≤0.25	≤0.25	≤0.25	-
	ST52.0	≤0.22	≤0.55	≤1.60	≤0.025	≤0.020	≤0.25	≤0.25	≤0.25	-
	CK45	0.42-0.50	0.17-0.37	0.50-0.80	≤0.025	≤0.020	≤0.25	≤0.25	≤0.25	-

Mechanical Properties:

Standard	Grade	Tensile Strength (MPa)	Yield Strenght Not less than		Elongation Not less than	Impact Test
Standard	Grade	Tensile Strength (MPa)	≤16mm	＞16-30mm	Elongation Not less than	Temperature (℃)	Absorbed Energy (KV/J)
Q/BQB203 DIN1629	-	-	≤16mm	＞16mm	-	-	-
	ST37.0	350-480	235	225	25	-	-
	ST44.0	420-550	275	265	21	-	-
	ST55	540-645	295	285	17	-	-
	ST52.0	500-650	355	345	21	-	-
	CK45	590-730	335	325	14	-	-