Square Tube

Country	Product	Side (mm)	Thickness (mm)	Length (m)	Steel Grade	Chemical Composition	Mechanical Properties	Standard	Product Name
Iran	Square Tube	20	1	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 20×20
Iran	Square Tube	25	1	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 25×25
Iran	Square Tube	30	1	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 30×30
Iran	Square Tube	20	1.25	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 20×20
Iran	Square Tube	25	1.25	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 25×25
Iran	Square Tube	30	1.25	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 30×30
Iran	Square Tube	15	1.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 15×15
Iran	Square Tube	20	1.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 20×20
Iran	Square Tube	25	1.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 25×25
Iran	Square Tube	30	1.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 30×30
Iran	Square Tube	35	1.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 35×35
Iran	Square Tube	40	1.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 40×40
Iran	Square Tube	20	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 20×20
Iran	Square Tube	25	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 25×25
Iran	Square Tube	30	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 30×30
Iran	Square Tube	35	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 35×35
Iran	Square Tube	40	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 40×40
Iran	Square Tube	45	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 45×45
Iran	Square Tube	50	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 50×50
Iran	Square Tube	60	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 60×60
Iran	Square Tube	70	2	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 70×70
Iran	Square Tube	20	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 20×20
Iran	Square Tube	25	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 25×25
Iran	Square Tube	30	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 30×30
Iran	Square Tube	35	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 35×35
Iran	Square Tube	40	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 40×40
Iran	Square Tube	50	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 50×50
Iran	Square Tube	60	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 60×60
Iran	Square Tube	70	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 70×70
Iran	Square Tube	80	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 80×80
Iran	Square Tube	90	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 90×90
Iran	Square Tube	100	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 100×100
Iran	Square Tube	120	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 120×120
Iran	Square Tube	140	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 140×140
Iran	Square Tube	30	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 30×30
Iran	Square Tube	35	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 35×35
Iran	Square Tube	40	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 40×40
Iran	Square Tube	45	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 45×45
Iran	Square Tube	50	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 50×50
Iran	Square Tube	60	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 60×60
Iran	Square Tube	70	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 70×70
Iran	Square Tube	80	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 80×80
Iran	Square Tube	90	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 90×90
Iran	Square Tube	100	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 100×100
Iran	Square Tube	120	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 120×120
Iran	Square Tube	140	3	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 140×140
Iran	Square Tube	40	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 40×40
Iran	Square Tube	45	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 45×45
Iran	Square Tube	50	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 50×50
Iran	Square Tube	60	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 60×60
Iran	Square Tube	70	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 70×70
Iran	Square Tube	80	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 80×80
Iran	Square Tube	90	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 90×90
Iran	Square Tube	100	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 100×100
Iran	Square Tube	120	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 120×120
Iran	Square Tube	140	3.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 140×140
Iran	Square Tube	50	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 50×50
Iran	Square Tube	60	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 60×60
Iran	Square Tube	70	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 70×70
Iran	Square Tube	80	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 80×80
Iran	Square Tube	90	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 90×90
Iran	Square Tube	100	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 100×100
Iran	Square Tube	120	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 120×120
Iran	Square Tube	140	4	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل قوطی 140×140
Russia	Square Tube	15	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 15×15
Russia	Square Tube	20	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 20×20
Russia	Square Tube	25	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 25×25
Russia	Square Tube	30	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 30×30
Russia	Square Tube	35	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 35×35
Russia	Square Tube	40	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 40×40
Russia	Square Tube	45	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 45×45
Russia	Square Tube	50	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 50×50
Russia	Square Tube	60	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 60×60
Russia	Square Tube	70	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 70×70
Russia	Square Tube	80	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 80×80
Russia	Square Tube	90	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 90×90
Russia	Square Tube	100	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 100×100
Russia	Square Tube	120	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 120×120
Russia	Square Tube	140	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 140×140
Russia	Square Tube	150	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 150×150
Russia	Square Tube	160	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 160×160
Russia	Square Tube	180	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 180×180
Russia	Square Tube	200	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 200×200
Russia	Square Tube	250	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 250×250
Russia	Square Tube	300	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8639-82 / GOST 30245-2012	Труба профильная квадратная 300×300

Rectangular Tube

Country	Product	Width (mm)	Height (mm)	Thickness (mm)	Length (m)	Steel Grade	Chemical Composition	Mechanical Properties	Standard	Product Name
Iran	Rectangular Tube	20	10	1	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 20×10
Iran	Rectangular Tube	25	10	1	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 25×10
Iran	Rectangular Tube	30	10	1	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 30×10
Iran	Rectangular Tube	30	20	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 30×20
Iran	Rectangular Tube	40	20	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 40×20
Iran	Rectangular Tube	40	30	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 40×30
Iran	Rectangular Tube	50	30	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 50×30
Iran	Rectangular Tube	60	30	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 60×30
Iran	Rectangular Tube	60	40	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 60×40
Iran	Rectangular Tube	80	40	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 80×40
Iran	Rectangular Tube	80	60	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 80×60
Iran	Rectangular Tube	90	40	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 90×40
Iran	Rectangular Tube	100	40	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 100×40
Iran	Rectangular Tube	100	50	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 100×50
Iran	Rectangular Tube	110	50	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 110×50
Iran	Rectangular Tube	120	50	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 120×50
Iran	Rectangular Tube	120	60	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 120×60
Iran	Rectangular Tube	120	80	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 120×80
Iran	Rectangular Tube	140	60	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 140×60
Iran	Rectangular Tube	150	60	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 150×60
Iran	Rectangular Tube	150	100	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 150×100
Iran	Rectangular Tube	180	100	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 180×100
Iran	Rectangular Tube	200	100	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 200×100
Iran	Rectangular Tube	200	120	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 200×120
Iran	Rectangular Tube	200	140	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 200×140
Iran	Rectangular Tube	220	60	2.5	6 or 12	ST37	C≤0.20%, Si 0.15–0.35%, Mn 0.35–0.75%, P≤0.05%, S≤0.05%	Yield ≈235 MPa, Tensile 360–460 MPa, Elongation 25%	ISIRI 2378 / EN 10219	پروفیل مستطیل 220×60
Russia	Rectangular Tube	20	10	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 20×10
Russia	Rectangular Tube	30	15	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 30×15
Russia	Rectangular Tube	30	20	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 30×20
Russia	Rectangular Tube	30	25	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 30×25
Russia	Rectangular Tube	40	20	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 40×20
Russia	Rectangular Tube	40	25	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 40×25
Russia	Rectangular Tube	50	25	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 50×25
Russia	Rectangular Tube	50	30	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 50×30
Russia	Rectangular Tube	60	30	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 60×30
Russia	Rectangular Tube	60	40	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 60×40
Russia	Rectangular Tube	80	40	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 80×40
Russia	Rectangular Tube	80	60	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 80×60
Russia	Rectangular Tube	100	50	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 100×50
Russia	Rectangular Tube	100	60	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 100×60
Russia	Rectangular Tube	120	60	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 120×60
Russia	Rectangular Tube	120	80	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 120×80
Russia	Rectangular Tube	140	100	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 140×100
Russia	Rectangular Tube	150	100	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 150×100
Russia	Rectangular Tube	160	80	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 160×80
Russia	Rectangular Tube	160	120	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 160×120
Russia	Rectangular Tube	180	100	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 180×100
Russia	Rectangular Tube	180	140	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 180×140
Russia	Rectangular Tube	200	100	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 200×100
Russia	Rectangular Tube	200	120	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 200×120
Russia	Rectangular Tube	200	160	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 200×160
Russia	Rectangular Tube	240	120	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 240×120
Russia	Rectangular Tube	240	160	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 240×160
Russia	Rectangular Tube	300	200	1.2–4 (typical), up to 22	6 or 12	St3	C 0.14–0.22%, Si 0.15–0.30%, Mn 0.40–0.65%, P≤0.04%, S≤0.05%	Yield 225–245 MPa, Tensile 370–480 MPa, Elongation 23–26%	GOST 8645-68 / GOST 30245-2012	Труба профильная прямоугольная 300×200