線坯子用無縫無縫鋼管

落實規範標準：

用處

重點牌子

鋼級(GB/T9711.1)	L175(Ⅰ、Ⅱ類)	L210	L245	L290	L320	L360	L390	L415	L450	L485	L555
鋼級(ANSI/API Spec 5L )	A25(Ⅰ、Ⅱ類)	A	B	X42	X46	X52	X56	X60	X65	X70	X80
明確要求總進行增長剪（jiǎn）應力Rt0.5(min)Mpa	175	210	245	290	320	360	390	415	450	485	555
抗拉極限抗拉強度(min)Mpa	315	335	415	415	435	460	490	520	535	570	625

化持續學成分

規範標準	牌子	化持續學成分(％)								CEV(％)
		C	Si	Mn	P	S	V	Nb	Ti
API SPEC 5L GB/T9711.2	B	≤0.16	≤0.40	≤1.10	≤0.020	≤0.010	－	－	－	≤0.42
	X42	≤0.17	≤0.40	≤1.20	≤0.020	≤0.010	≤0.05	≤0.05	≤0.04	≤0.42
	X52	≤0.20	≤0.45	≤1.60	≤0.020	≤0.010	≤0.10	≤0.05	≤0.04	≤0.45
	X60	≤0.21	≤0.45	≤1.60	≤0.020	≤0.010	≤0.15	≤0.05	≤0.04	議定書
	X65	≤0.16	≤0.45	≤1.60	≤0.020	≤0.010	≤0.06	≤0.05	≤0.06	≤0.45
	X70	≤0.16	≤0.45	≤1.70	≤0.020	≤0.010	≤0.06	≤0.05	≤0.06	≤0.45

API SPEC 5L線坯子管產品規格表

有名無實 度量衡	外徑 D		壁厚 T		進行計算量體重
					平端（duān）		帶螺紋和接箍
	in	mm	in	mm	lb/ft	kg/m	lb	kg
2-3/8	2.375	60.3	0.154	3.9	3.66	5.42	1.20	0.54
	2.375	60.3	0.218	5.5	5.03	7.43	1.09	0.50
2-7/8	2.875	73.0	0.203	5.2	5.80	8.69	1.80	0.82
	2.875	73.0	0.276	7.0	7.67	11.39	1.57	0.71
3-1/2	3.500	88.9	0.216	5.5	7.58	11.31	1.80	0.82
	3.500	88.9	0.300	7.6	10.26	15.24	1.76	0.80
4	4.000	101.6	0.226	5.7	9.12	13.48	3.20	1.45
	4.000	101.6	0.318	8.1	12.52	18.68	3.00	1.36
4-1/2	4.500	114.3	0.237	6.0	10.80	16.02	4.40	2.00
	4.500	114.3	0.337	8.6	15.00	22.42	3.99	1.81
5-9/16	5.563	141.3	0.258	6.6	14.63	21.92	5.60	2.54
	5.563	141.3	0.375	9.5	20.80	30.88	4.94	2.44
6-5/8	6.625	168.3	0.280	7.1	18.99	28.22	7.20	3.27
	6.625	168.3	0.432	11.0	28.60	42.67	5.65	2.56
8-5/8	8.625	219.1	0.277	7.0	24.72	36.61	14.80	6.72
	8.625	219.1	0.322	8.2	28.58	42.65	14.00	6.36
	8.625	219.1	0.500	12.7	43.43	64.64	11.74	5.20
10-3/4	10.750	273.1	0.279	7.1	31.23	46.57	20.00	9.08
	10.750	273.1	0.307	7.8	34.27	51.03	19.20	8.72
	10.750	273.1	0.365	9.3	40.52	60.50	17.40	7.90
	10.750	273.1	0.500	12.7	54.79	81.55	15.32	6.95