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Steel Plates for Petroleum and Natural Gas Transportation Pipelines

Steel Plates for Petroleum and Natural Gas Transportation Pipelines

Main Application

Plates of Grade A, B, X42～X90 are mainly used to manufacture pipelines to transport petroleum, natural gas, water-coal slurry and other mediums. The products made by advanced melting, refining and rolling process have many characteristics, such as pure steel quality, excellent comprehensive performance and high safety.

Delivery condition:

TMCP, hot rolled and normalized, etc.

Steel Grades

Standard	Grade		Remarks
		L210 or A、L245 or B、
		L290or X42、 L390 or X46、
	PSL1	L360 or X52、 L415 or X60、 L450 or X65、 L485 or X70、	Pipeline Specifications:
API SPEC 5L		L555 or X80、 L625 or X90、	API SPEC 5L Standard of line pipe
GB/T 21237		L690 or X100	Wide and heavy plates for transportation
GB/T 9711 GB/T 14164	PSL2	L245M or BM～L555M or X80M L245N or BN～L555N or X80N	pipeline of petroleum and natural gas Steel transportation pipeline in petroleum
	For sour services	L245MS or BMS L485MS or X70MS	and natural gas industry
	For offshore services	L245MO or BMO L555MO or X80MO
DNV-OS-F101	245、290、320、360、390、415、450、485、555		Submarine Pipeline Systems

Chemical Composition Maximum (%)

Grade	C	Si	Mnc	P	S	V	Nb	Ti	Others	CEa	Pcmb
PSL1
L245 or B	0.26	0.40	1.20	0.030	0.030	d	d	d	-	-	-
L290 or X42	0.26	0.40	1.30	0.030	0.030	d	d	d	-	-	-
L320 or X46	0.26	0.40	1.40	0.030	0.030	d	d	d	-	-	-
L360 or X52	0.26	0.45	1.40	0.030	0.030	d	d	d	-	-	-
L390 or X56	0.26	0.45	1.40	0.030	0.030	d	d	d	-	-	-
L415 or X60	0.26	0.45	1.40 e	0.030	0.030	d	d	d	-	-	-
L450 or X65	0.26	0.45	1.45 e	0.030	0.030	d	d	d	-	-	-

L485 or X70	0.26	0.45	1.65 e	0.030	0.030	d	d	d	-	-	-
L555 or X80	0.22	0.45	1.20	0.030	0.030	d	d	d	-	-	-
L625 or X90	0.20	0.45	1.30	0.030	0.030	d	d	d	-	-	-
PSL2
L245M or BM	0.22	0.45	1.20	0.025	0.015	0.05	0.05	0.04	e,i	0.43	0.25
L290M or X42M	0.22	0.45	1.30	0.025	0.015	0.05	0.05	0.04	e.i	0.43	0.25
L320M or X46M	0.22	0.45	1.30	0.025	0.015	0.05	0.05	0.04	e.i	0.43	0.25
L360M or X52M	0.22	0.45	1.40	0.025	0.015	d	d	d	e.i	0.43	0.25
L390M or X56M	0.22	0.45	1.40	0.025	0.015	d	d	d	e.i	0.43	0.25
L415M or X60M	0.12	0.45	1.60	0.025	0.015	d	d	d	f.i	0.43	0.25
L450M or X65M	0.12	0.45	1.60	0.025	0.015	d	d	d	f.i	0.43	0.25
L485M or X70M	0.12	0.45	1.70	0.025	0.015	d	d	d	f.i	0.43	0.25
L555M or X80M	0.12	0.45	1.85	0.025	0.015	d	d	d	g.i	0.43 f	0.25
For sour service
L245MS or BMS	0.10	0.40	1.25	0.020	0.002	0.04	0.04	0.04	-	-	0.19
L290MS or X42MS	0.10	0.40	1.25	0.020	0.002	0.04	0.04	0.04	-	-	0.19
L320MS or X46MS	0.10	0.45	1.35	0.020	0.002	0.05	0.05	0.04	-	-	0.20
L360MS or X52MS	0.10	0.45	1.45	0.020	0.002	0.05	0.06	0.04	-	-	0.20
L390MS or X56MS	0.10	0.45	1.45	0.020	0.002	0.06	0.08	0.04	d	-	0.21
L415MS or X60MS	0.10	0.45	1.45	0.020	0.002	0.08	0.08	0.06	d.j	-	0.21
L450MS or X65MS	0.10	0.45	1.60	0.020	0.002	0.10	0.08	0.06	d.j.k	-	0.22
L485MS or X70MS	0.10	0.45	1.60	0.020	0.002	0.10	0.08	0.06	d.j.k	-	0.22
For offshore service
L245MO or BMO	0.12	0.40	1.25	0.020	0.010	0.04	0.04	0.04	f	-	0.19
L290MO or X42MO	0.12	0.40	1.35	0.020	0.010	0.04	0.04	0.04	f	-	0.19
L320MO or X46MO	0.12	0.45	1.35	0.020	0.010	0.05	0.05	0.04	f	-	0.20
L360MO or X52MO	0.12	0.45	1.65	0.020	0.010	0.05	0.05	0.04	d.m	-	0.20
L390MO or X56MO	0.12	0.45	1.65	0.020	0.010	0.06	0.08	0.04	d.m	-	0.21
L415MO or X60MO	0.12	0.45	1.65	0.020	0.010	0.08	0.08	0.06	d.m	-	0.21
L450MO or X65MO	0.12	0.45	1.65	0.020	0.010	0.10	0.08	0.06	d.m	-	0.22
L485MO or X70MO	0.12	0.45	1.75	0.020	0.010	0.10	0.08	0.06	d.m	-	0.22
L555MO or X80MO	0.12	0.45	1.85	0.020	0.010	0.10	0.08	0.06	d.m	-	0.24
a. CE=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 b. Pcm =C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15+V/10+5B c. For each reduction of 0,01 % below the specified maximum for C, an increase of 0,05 % above the specified maximum for Mn is permissible, up to a maximum of 1,65 % for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1,75 % for grades L360 or X52, but L485 or X70; up to a maximum of 2,00 % for grades ≥ L485 or X70, but ≤ L555 or X80; and up to a maximum of 2,20 % for grades L555 or X80. d. Nb+V+Ti≤0.15%. e. Cu≤0.50%；Ni≤0.30%；Cr≤0.30%；Mo≤0.15%. f. Cu≤0.50%；Ni≤0.50%；Cr≤0.50%；Mo≤0.50%.

Mechanical Properties

Grade	Yield Strength R_t0.5, MPa	Tensile Strength R_m, MPa	Rt0.5/Rm	Elongation A50, %	Impact Absorbed Energy,A_kv, J	DWTT， %
PSL1
B	≥245	≥415	-	a	According to customer requirements
X42	≥290	≥415	-	a
X52	≥320	≥435	-	a
X60	≥360	≥460	-	a
X65	≥390	≥490	-	a
X70	≥415	≥520	-	a
PSL2，for sour service
L290M or X42M L290MS or X42MS	290-495	415-655	≤0.93	a	According to customer requirements
L320M or X46M L320MS or X46MS	320-525	435-655	≤0.93	a
L360M or X52M L360MS or X52MS	360-530	460-760	≤0.93	a
L390M or X56M L390MS or X56MS	390-545	490-760	≤0.93	a
L415M or X60M L415MS or X60MS	415-565	520-760	≤0.93	a
L450M or X65M L450MS or X65MS	450-600	535-760	≤0.93	a
L485M or X70M L485MS or X70MS	485-635	570-760	≤0.93	a
L555M or X80M	555-705	625-825	≤0.93	a
For offshore service
L290MO or X42MO	290-495	415-655	≤0.93	a	According to customer requirements
L320MO or X46MO	320-520	435-655	≤0.93	a
L360MO or X52MO	360-525	460-760	≤0.93	a
L390MO or X56MO	390-540	490-760	≤0.93	a
L415MO or X60MO	415-565	520-760	≤0.93	a

L450MO or X65MO	450-570	535-760	≤0.93	a
L485MO or X70MO	485-605	570-760	≤0.93	a
L555MO or X80MO	555-675	625-825	≤0.93	a
a. The minimum elongation using the following equation: A_f=1940*A^0.2/U^0.9

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