Hot rolled steel sheet pile

Hot-rolled steel sheet piles are high-strength steel section products made through high-temperature rolling processes. Their cross-sectional shapes include U-shaped, Z-shaped and straight web types. They are mainly used in water conservancy projects, foundation pit support, bridge cofferdams and rail transit construction. They feature strong bending resistance, high construction efficiency and reusability.

Hot-rolled U-shaped steel sheet piles

HR U-shaped steel sheet piles, also known as Lassen steel sheet piles, are sections of steel formed by high-temperature rolling with lock mouths, and their cross-sections present a "U shape". The core advantage of this type of sheet pile lies in the structure of its interlocking joints. The mutual nesting between the interlocking joints can form a continuous wall, effectively blocking the infiltration of water and soil. Compared with other structures, it features light weight, strong load-bearing capacity, good seismic resistance, strong water resistance and easy construction.

Size	Width	Height	Thicknes	Single meterial				Sectional area/meter
Width*Height	mm	mm	mm	Sectional area	Theoretical weight	Moment of inertia	Section modulus	Sectional area	Theoretical weight	Moment of inertia	Section modulus
	W1	H1	t			Ix	Wx			Ix	Wx
				cm2	kg/m	cm4	cm3	cm2	kg/m2	cm4	cm3
HRU400×85	400	85	8	45.21	35.5	598	88	113	88.7	4500	529
HRU400×100	400	100	10.5	61.18	48	1240	152	153	120.1	8740	874
HRU400×125	400	125	13	76.42	60	2220	223	191	149.9	16800	1340
HRU400×150	400	150	13.1	74.4	58.4	2790	250	186	146	22800	1520
HRU400×160	400	160	16	96.9	76.1	4110	334	242	190	34400	2150
HRU400×170	400	170	15.5	96.99	76.1	4670	362	242.5	190.4	38600	2270
HRU500×200	500	200	24.3	133.8	105	7960	520	267.6	210.1	63000	3150
HRU500×225	500	225	27.6	153	120.1	11400	680	306	240.2	86000	3820
HRU600×130	600	130	10.3	78.7	61.8	2110	203	131.2	103	13000	1000
HRU600×180	600	180	13.4	103.9	81.6	5220	376	173.2	136	32400	1800
HRU600×210	600	210	18	135.3	106.2	8630	539	225.5	177	56700	2700

Hot-rolled Z-shaped sheet piles



HR Z-shaped steel sheet piles are formed through high-temperature rolling, with a cross-section in the shape of "Z". Their notable features are the continuous form of the web and the symmetrical positions of the lock openings on both sides of the central axis.

Compared with U-shaped piles, this feature can significantly increase the section modulus. Under the same thickness, the moment of inertia increases by 10% to 20%, thereby significantly enhancing the overall stiffness of the sheet pile wall structure.

	width (w)	height (h)	flange (tf)	web (tw）	Cross sec area (A)	weight	coating area	cross sec area (A)	weight	moment of inertia (ly)	elastic modulus (Sx)	plastic modulus (Sx)	benging moment (Max)	bending moment (Max)
	mm	mm	mm	mm	cm²	kg/m	m²/m	cm²/m	kg/cm²	cm4/m	cm3/m	cm3/m	kN-m/m	kN-m/m
Section	(in)	(in)	(in)	(in)	in2	lbs/ft	ft2/ft	in2/ft	lbs/ft2	in4/ft	in3/ft	in3/ft	kip-ft/ft	kip-ft/ft
HRZ12-770	770	343.5	8.6	8.5	92.99	72.8	1.96	120.8	94.5	21496	1252	1488	518	561
	30.31	13.52	0.339	0.335	14.41	48.92	6.44	5.71	19.37	157.4	23.3	23.3	116.4	126.1
HRZ13-770	770	344	9.1	9	97.4	76.2	1.96	126.5	99	22433	1304	1551	540	585
	30.31	13.54	0.358	0.354	15.1	51.22	6.44	5.98	20.28	164.3	24.3	24.3	121.3	131.4
HRZ14-770	770	344.5	9.6	9.5	101.8	79.6	1.96	132.2	103.4	23370	1357	1613	561	608
	30.31	13.56	0.378	0.375	15.78	53.52	6.44	6.25	21.19	171.1	25.2	25.2	126.2	136.7
HRZ12-700	700	314.2	8.6	8.5	86.47	67.9	1.82	123.5	97	18971	1208	1418	500	541
	27.56	12.37	0.339	0.335	13.4	45.62	5.97	5.84	19.86	138.9	22.5	26.4	112.3	121.7
HRZ13-700	700	315.2	9.6	9.5	94.47	74.2	1.82	135	105.9	20611	1308	1543	541	586
	27.56	12.41	0.378	0.374	14.46	49.84	5.97	6.38	21.7	150.9	24.3	28.7	121.7	131.8
HRZ14-700	700	316.2	10.6	10.5	102.5	80.5	1.82	146.4	114.9	22262	1408	1669	582	631
	27.56	12.45	0.417	0.413	15.89	54.07	5.97	6.92	23.54	163	26.2	31	131	141.9

Steel grades for hot rolled steel sheet piles

1. European Standard (EN 10248)

In the European standard EN 10248, the commonly used steel grades for hot-rolled sheet piles include:
S240GP, S270GP, S320GP, S355GP, S390GP, S430GP and S460AP. These steel grades represent different yield strength grades and can be selected according to the load-bearing requirements of the project.

In addition, in recent years, new corrosion-resistant steel grades have been developed for Marine and highly corrosive environments:
MLoCor Blue 320, Blue 355 and Blue 390 have superior anti-corrosion performance and are particularly suitable for ports, seawalls and coastal structures.

2. American Standard (ASTM)

According to the American ASTM standard system, common hot-rolled sheet pile steel grades include:
A36, A328, A572 (Grade 42/50/55/60/65), A588, and the highly corrosion-resistant steel grade A690 specifically designed for Marine environments. Among them, the A572 series is widely used in heavy-duty structures due to its high strength and excellent welding performance, while the A690 demonstrates outstanding corrosion resistance in Marine or humid environments.

3. Japanese Standard (JIS A 5523 / JIS A 5528)

The steel grades of hot-rolled sheet piles specified in Japanese standards mainly include:
SY295, SY390, SYW295, SYW390. Among them, the "SY" series is a common structural steel, while the "SYW" series is a type of steel with enhanced welding performance, often used in engineering structures with high requirements for welding reliability and ductility.

Frequently Asked Questions About Hot-Rolled Steel Sheet Piles

1. What are hot-rolled steel sheet piles used for?

Hot-rolled steel sheet piles are used for retaining walls, foundation excavations, bridge cofferdams, ports, quay walls, riverbank protection and other civil engineering works. Their interlocking edges allow individual piles to form a continuous wall that retains soil and can help control groundwater movement.

2. What is the difference between hot-rolled and cold-formed steel sheet piles?

Hot-rolled sheet piles are produced by rolling heated steel, while cold-formed sheet piles are formed from steel strip or plate at lower temperatures. Hot-rolled profiles often provide tightly controlled interlock geometry and are widely used in demanding retaining-wall applications. Cold-formed profiles can offer different dimensional and cost advantages. The better choice depends on section properties, interlock requirements, ground conditions and project economics.

3. Are U-shaped or Z-shaped steel sheet piles better?

Neither type is universally better. U-shaped piles are widely used for retaining walls and cofferdams, while Z-shaped piles often provide efficient bending resistance for larger retaining-wall systems. The final choice should be based on verified section properties, interlock behavior, wall stiffness, installation conditions and engineering calculations.

4. What standards apply to hot-rolled steel sheet piles?

EN 10248 is a principal European standard for hot-rolled steel sheet piles. ASTM A328 is associated with steel sheet piling in the American standards system, while relevant Japanese product standards include JIS A 5523 and JIS A 5528. The exact standard must be confirmed for the required product, grade and project jurisdiction.

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