ISO 3183 Gr L320/ L320N/L320Q/L320M Steel Pipe

‌ISO 3183 L320/L320N/L320Q/L320M Line Pipe‌ is a ‌seamless or welded steel pipe‌ specifically designed for transporting ‌oil, natural gas, water, and other fluids‌, serving as a ‌core material‌ in the ‌energy transportation sector‌.

Specification

Standard: ISO 3183

Size: ¼" to 36″

Wall Thickness: SCH 10 to 160, STD, XS, XXS

Length: up to 12 Meters

Product Specification Level: PSL 1/PSL2

ISO3183 L320 PSL1 pipe Chemical Composition

PSL	Manufacturing	C	Mn	P	S
PSL1	Seamless	0,28	1,40	≤0,030	0,030
PSL1	Welded	0,26	1,40	≤0,030	0,030

ISO3183 L320 PSL2 pipeline Chemical Composition

Grades	C	Si	Mn	P	S	V	Nb	T
L320N or X46N	0,24	0,40	1,40	0,025	0,015	0,07	0,05	0,04
L320Q or X46Q	0,18	0,45	1,40	0,025	0,015	0,05	0,05	0,04
L320M or X46M	0,22	0,45	1,30	0,025	0,015	0,05	0,05	0,04

ISO3183 L320 line pipe Mechanical property

PSL	Pipe grade	Yield strength, Mpa	Tensile strength, Mpa
PSL1	L320 or X46	320	435
PSL2	L320N or X46N	325-525	435-655
	L320Q or X46Q
	L320M or X46M

ISO3183 L320 Pipe grades, steel grades and acceptable delivery conditions

PSL	Delivery condition	Pipe grade/steel grade
PSL 1	As-rolled, normalizing rolled, thermomechanical rolled, thermomechanical formed, normalizing formed, normalized, normalized and tempered or quenched and tempered	L320 or X46
PSL 2	Normalizing rolled, normalizing formed, normalized or normalized and tempered	L320N or X46N
PSL 2	Quenched and tempered L245Q or BQ	L320Q or X46Q
PSL 2	Thermomechanical rolled or thermomechanical formed L245M or BM	L320M or X46M

ISO 3183 L320/ L320N/L320Q/L320M pipeline

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