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Hot Rolled Z Type
Hot Rolled Z Type
Hot Rolled Z Type

Z type sheet piles are produced in the shape of Z letter,which are normally drive in crimped or welded doubles. Z type sheet piles are more widely used than U profile in port construction and deep foundation because Z profile can have a bigger modulus and can be used as intermediary piles for tubular and HZ combined walls.

The main characteristics of Z type hot rolled steel sheet pile: continuous form of the web and the specific location of the interlock symmetrically on both sides of the neutral axis, these two help to improve the modulus of section.Generally,Z type sheet piles have below advantages:
Ø When modulus of section are similar,Z type sheet pile always have smaller wegiht per square meter than U type sheet piling
Ø Bigger width,means that less no of sheets are needed,saving costs on sheet piling installations or excavations.also this is good for watertight.
Ø Can be used as infill pile used together with steel pipes,and H beams.which is normally used to achive very high modulus

 

AZ Type Hot Rolled Sheet Piling 

Section Dimensions Mass Moment
of inertia
Modulus
of Section
Width Height Thickness Per pile Wall
w h t s
mm mm mm mm kg/m kg/m2 cm4/m cm3/m
AZ 12-770 770 344 8.5 8.5 72.6 94 21430 1245
AZ 13-770 770 344 9.0 9.0 76.1 99 22360 1300
AZ 14-770 770 345 9.5 9.5 79.5 103 23300 1355
AZ 14-770 10/10 770 345 10.0 10.0 82.9 108 24240 1405
AZ 12-700 700 314 8.5 8.5 67.7 96.7 18880 1205
AZ 13-700 700 315 9.5 9.5 74.0 105.7 20540 1305
AZ 13-700 10/10 700 316 10.0 10.0 77.2 110.2 21370 1355
AZ 14-700 700 316 10.5 10.5 80.3 114.7 22190 1405
AZ 18 630 380 9.5 9.5 74.4 118 34200 1800
AZ 18 10/10 630 381 10.0 10.0 77.8 123 35540 1870
AZ 17-700 700 419 8.5 8.5 73.1 104 36230 1730
AZ 18-700 700 420 9.0 9.0 76.5 109 37800 1800
AZ 19-700 700 420 9.5 9.5 80.0 114 39380 1870
AZ 20-700 700 421 10.0 10.0 83.5 119 40960 1945
AZ 18-800 800 449 8.5 8.5 80.7 100.9 41320 1840
AZ 20-800 800 450 9.5 9.5 88.6 110.7 45050 2000
AZ 22-800 800 451 10.5 10.5 96.4 120.5 48790 2165
AZ 23-800 800 474 11.5 9.0 94.6 118.2 55260 2330
AZ 25-800 800 475 12.5 10.0 102.6 128.2 59410 2500
AZ 27-800 800 476 13.5 11.0 110.5 138.1 63570 2670
AZ 26 630 427 13.0 12.2 97.8 155 55510 2600
AZ 24-700 700 459 11.2 11.2 95.7 136 55820 2430
AZ 26-700 700 460 12.2 12.2 102.9 147 59720 2600
AZ 28-700 700 461 13.2 13.2 110.0 157 63620 2760
AZ 28-750 750 509 12.0 10.0 100.8 134.4 71540 2810
AZ 30-750 750 510 13.0 11.0 108.8 145.0 76670 3005
AZ 32-750 750 511 14.0 12.0 116.7 155.6 81800 3200
AZ 36-700N 700 499 15.0 11.2 118.6 169 89610 3590
AZ 38-700N 700 500 16.0 12.2 126.4 181 94840 3795
AZ 40-700N 700 501 17.0 13.2 134.2 192 100080 3995
AZ 42-700N 700 499 18.0 14.0 142.1 203.1 104930 4205
AZ 44-700N 700 500 19.0 15.0 149.9 214.2 110150 4405
AZ 46-700N 700 501 20.0 16.0 157.7 225.3 115370 4605
AZ 46 580 481 18.0 14.0 132.6 229 110450 4595
AZ 48 580 482 19.0 15.0 139.6 241 115670 4800
AZ 50 580 483 20.0 16.0 146.7 253 121060 5015
AZ 48-700 700 503 22.0 15.0 158.5 226.4 119650 4755
AZ 50-700 700 504 23.0 16.0 166.3 237.5 124890 4955
AZ 52-700 700 505 24.0 17.0 174.1 248.7 130140 5155

 

 HOESCH Z Type Sheet Piling

Section System
width
Wall-
height
Flange
thick ness
Web
thick ness
Mass Section-
modulus
Moment
of Inertia
w h t s G G Wy single pile Iy
Wall single pile Wall Wall
mm mm mm mm kg/m2 kg/m cm3/m cm3 cm4/m
HOESCH 1707 700 420 8,7 8,5 104,6 73,2 1735 1215 36435
HOESCH 1807 700 420 9,2 9,0 109,3 76,5 1800 1260 37800
HOESCH 1907 700 420 9,7 9,5 113,9 79,7 1865 1306 39165
HOESCH 2007 700 420 10,3 10,1 119,4 83,6 1945 1362 40845
HOESCH 2407 700 440 11,0 11,0 136,7 95,7 2450 1715 53000
HOESCH 2507 700 440 11,5 11,5 141,4 99,0 2525 1768 55550
HOESCH 2607 700 440 12,0 12,0 146,2 102,3 2600 1820 57200
HOESCH 2707 700 440 12,7 12,7 153,0 107,1 2705 1894 59520
HOESCH 2807 700 440 13,1 13,1 156,7 109,7 2765 1936 60830
HOESCH 3607 700 500 16,8 10,8 167,7 117,4 3595 2517 89875
HOESCH 3707 700 500 17,4 11,4 173,7 121,6 3696 2587 92400
HOESCH 3807 700 500 18,0 12,0 179,8 125,9 3800 2660 95000
HOESCH 3907 700 500 18,7 12,7 186,8 130,8 3925 2745 98000
HOESCH 4007 700 500 19,0 13,0 190,0 133,0 3970 2780 99250

 

Z Type Hot Rolled Sheet Pile

Z Type sheet piles stands like the letter Z, and are long structural sections with vertical interlocking system which will forms a continuous sheet piling wall. The ability of a steel sheet piling profile depends on the modulus of section, steel grade and the soils and grounds it driven in. China sheet piling transfer pressure from one side of the wall to the soils in front of it. Hot rolling and cold rolling are the two primary production technology for China sheet piles, with the biggest difference is the interlock. Hot rolled Z sections are produced from steel at very high temperatures, so the interlocks would be more tight than cold formed interlocks. So in very hard grounds,sheet pile retaining walls,sheet pile cofferdams, Jetty construction, sheet pile quay walls, slope stabilization, wharf construction, China hot rolled sheet piles are preferred. Hot rolled sections are normally more watertight. Hot rolled steel sheet piles have almost 10% recycled content while cold formed steel sheet piling only have 70% recycled materials. Gradually cold rolled sheet piling and hot rolled sheet piling can replace each other in lots of projects.

Z type hot rolled steel sheet piles normally refer to AZ sheet pile, PZ sheet pile, PZC sheet pile OZ sheet pile etc. Because the competition of Z profiles are not so heavy as U profiles, Z profiles prices are normally higher than U profiles, although the rolling costs is roughly the same. Lots of sheet pile manufacturer and supplier don't know what is the difference between hot rolled sheet piles and Larssen sheet piles. Any sections with Larssen locks can be called Larssen steel sheet pile. Larrsen was the name of man who invented Larssen interlocks. So all sheet piling UK, Sheet pile Europe, steel sheet pile all can be called Larrsen sheet pile.      

We keep a large stock of China hot rolled sheet piling with high quality, strictly as per Quality Assurance and Control Procedures. Most widely used standard is EN10248 Parts 1 & 2.

Hot rolled steel sheet piles have a ball or socket type interlock. Ball type interlocks are only compatible with ball type steel sheet pile. And socket type sheet piles are only compatible with socket interlocks. Ball clutches are normally used in USA, while in other parts, almost all socket interlocks

 

Z Type Hot Rolled Sheet Piling Delivery Form

AZ Larssen sheet piling can be supplied in single piles, crimpled double piles. This is the delivery form of Larssen sheet pile. We can also sell bent piles, corner piles, junction piles for Larssen steel sheet piling. Larssen sheet piles can be supplied in jagged wall, box piles, box sheet pile, Combined walls. Handling hole and marking can also be supplied upon request.

Most widely used applications are river control structure and flood defense, ports and harbors, pumping stations, bridge abutment, road widening retaining walls, basements, underground car parks, containment barriers, loading bearing foundations, temperature works etc.

From the sheet piling design and calculation stage, China hot rolled steel sheet piling already bear in mind the corrosion factors to achieve a satisfactory service life. Different corrosion factors for Larssen steel sheet pile must be noted during design , including underground corrosion, atmospheric corrosion, Corrosion in fresh waters and in marine environments. In Marine environments, tidal zones, sea water immersion zone, low water zone, splash and atmospheric zone. To increase the service life of Larssen sheet pile, engineers or contractors have several options.

 

Corrossion Protection of Larssen Steel Sheet Piles

1.Use of a heavier section. Additional steel thickness as a corrosion allowance can increase the effective life of China hot rolled  sheet pile. How much extra thickness steel required depends on the working life and the surroundings. Contractors and engineers should bear in mind that the most corrosive zones might not coincide with the most highly stressed zone. Another economical calculation is to increase the steel sheet piles thickness locally by attaching steel plates. The splice steel plates might be 2-3m longs

2.Use of a high yield steel. Although all carbon steel have similar corrosion rates, S355GP steel sheet piling will allow additional 30% loss of permissible thickness to be sustained without detriment, compared to S270 GP steel grade. As a result, an increase of 30% in effective life of a metal sheet pile can be achieve with only 2% sheet pile costs. S430 GP or S390 GP can achieve a better result.

3.Coating system: Painted sheet piles are used in many seawall and bulkheads projects. A good painting system can last for over 20 years. Mostly commonly specified paint brands are International(Interzone 954,Interseal 269) SIGMA, SIGMACOVER painting, Hempel paint, Jotun paint (Marathon epoxy, Jotamastic 87, Baltoflake etc).Steel piling sections can be painted one side or both sides, temporary painting or permanent painting. Temporary painting is only within 100um to protect the China hot rolled steel sheet piling during transportation on sea. While permanent painting normally minimum 450-500um.

5.Cathodic protection: Two systems are used, using either sacrificial anodes or impressed DC currents. The cathodic protection system requires knowledge and experiences of specialist firms.

6.Concrete encasement: In marine environments, concrete encasement can be used to protect steel piles, which is often restricted to the splash zone. In some cases, both the splash zone and the tidal zone are protected by extending the cope to below the lowest low water level.

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Sheet Pile Brochure

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P1-5:Introduction P6-7:Asia U type sheet pile
P8-9:Larssen U sheet pile P10-11:AU PU GU sheet pile
P16-17:Z type sheet pile P18-19:Straight sheet pile
P19-20:Corner section P19-20:Steel grade
P22-25:Tubular combiwal P26-29:HZ combiwall
P30-35:Global projects  
   

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