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用于石油、天然气工业中的气、水、油输送，用于油井中抽取石油或天然气。

用于石油、天然气工业中的气、水、油输送，用于油井中抽取石油或天然气。

执行标准：
API SPEC 5L

用途：
用于石油、天然气工业中的气、水、油输送，用于油井中抽取石油或天然气。

尺寸公差:

API SPEC 5L 化学成分

标准 Standard	产品规定类别 PSL	钢级 Steel grade	化学成分 Chemical composition, %
标准 Standard	产品规定类别 PSL	钢级 Steel grade	C	Mn	P	S	Si	V	Nb	Ti	CEpcm
API 5L GB/T9711.2	PSL 1	A or L210	≤0.22	≤0.90	≤0.030	≤0.030	-	-	-	-	≤0.25
		B or L245	≤0.28	≤1.20	≤0.030	≤0.030	-	-	-	-	≤0.25
		x42 or L290	≤0.28	≤1.30	≤0.030	≤0.030	-	-	-	-	≤0.25
		X46 or L320	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	≤0.25
		X52 or L360	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	≤0.25
		X56 or L390	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	≤0.25
		X60 or L415	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	≤0.25
	PSL 2	BR or L245R	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	c	c	≤0.04	≤0.25
		X42R or L290R	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	≤0.06	≤0.05	≤0.04	≤0.25
		BN or L245N	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	c	c	≤0.04	≤0.25
		X42N or L290N	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	≤0.06	≤0.05	≤0.04	≤0.25
		X46N or L320N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.40	≤0.07	≤0.05	≤0.04	≤0.25
		X52N or L360N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	≤0.25
		X56N or L390N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	≤0.25
		X60N or L415N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	协商
备注：c：除非另有协议，否则V和Nb之和应≤0.06%。 Note: c: The sum of the columbium [niobium], and vanadium contents shall not exceed 0.06% except that, by agreement between the purchaser and the manufacturer, an alternative maximum may be established.

API SPEC 5L 力学性能

标准 Standard	产品规定类别 Product Specification Level	钢级 Steel grade	屈服强度 Yield Strength (min), Mpa	抗拉强度 Tensile Strength(min), Mpa
API 5L GB/T9711.2	PSL 1	A or L210	210	335
		B or L245	245	415
		x42 or L290	290	415
		X46 or L320	320	435
		X52 or L360	360	460
		X56 or L390	390	490
		X60 or L415	415	520
	PSL 2	BR or L245R	245~450	415~760
		X42R or L290R	290~495	415~760
		BN or L245N	245~450	415~760
		X42N or L290N	290~495	415~760
		X46N or L320N	320~525	435~760
		X52N or L360N	360~530	460~760
		X56N or L390N	390~545	490~760
		X60N or L415N	415~565	520~760

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