SSAW Spiral Pipe Pile For Construction

SSAW SPIRAL STEEL PIPE PILINGS SSAW and LSAW steel pipe piles have been used as main retaining elements in foundation design due to its ability to withstand high vertical loads as well as retaining soil and earth pressures when used in conjunction with sheet piles. As one of main players of...

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SSAW SPIRAL STEEL PIPE PILINGS


SSAW and LSAW steel pipe piles have been used as main retaining elements in foundation design due to its ability to withstand high vertical loads as well as retaining soil and earth pressures when used in conjunction with sheet piles. As one of main players of piling products in the world market, CANGZHOU SPIRAL STEEL PIPE GROUP CO.,LTD. surely can fulfill all your request pipe and piles.
Spiral Submerged Arc Welded pipes are very easy to achieve big length without circumferential welds and also cheaper. While in some cases, stronger pipe pilings are needed, here comes the LSAW (Longitudinal Submerged Arc Welded)pipes. Grand Piling can produce both Spiral welded pipes and Longitudinal welded pipes. 

Steel pipe pile based retaining wall structures are used in harbors for both wharves and piers. Another relatively common application is permanent underground retaining wall structures .Retaining wall structures based on steel pipe piles can often replace the traditional, labor-intensive excavation-based implementations of retaining wall structures. Combi-walls and pipe pile walls have clearly better resistance against vertical loads than regular sheet-pile walls. Combi-walls and pipe pile walls also have excellent bending stiffness.

With our pipe mill strategically located near the port and our strong pipe production ability, No limit on dimensions and length. This is especially important in deep water and in big projects. The biggest Pipe we have produced is length up to 100m,diameter up to 4.2m.Any steel grade,X70 or S460 or A690,as long as you name it, we will produce for you. Our SSAW pipe machines can produce up to 26mm thickness, our LSAW machines can produce up to 80mm thickness.

We have been in the steel pipe and piling industry for over 30 years,and we are in good contact with numerous piling contractors which are in the ENR top 100 list, design institutes etc, we know your needs and will fulfill it perfectly.


INSPECTIONS
 Grand SSAW or LSAW Steel Pipe Piling follows strictly the requirements listed in API5L /EN10219/ASTM A252 Standards. Clients can dispatch engineers or Third Party Inspector to our works as per the procedures listed in the documents.

MECHANICAL ROPERTIS
Steel grade according to EN10219-1 Minimum yield strength Reh (TS16mm)

N/mm2

Minimum yield strength Reh (16STS40mm) N/mm2 Minimum

strength

N

ultimate tensile Rn (3£T£40mm) <J/mm2 Minimum elongation (TS40mm)

%

S235JRH 235 225 340-47- 22
S275JOH/J2H 275 265 410-560 20
S355JOH/JEH 355 345 490-630 20
S420MH 420 400 500-660 19
S460MH 460 440 530-720 17
Steel grade according to API5L,PSL1 Minimum yield strength Reh N/mm2 Minimum ultimate tensile strength Rm N/mm2 Minimum elongation


%

B 245 415 23
X42 290 415 23
X46 320 435 22
X52 360 460 21
X56 390 490 19
X60 415 520 18
X65 450 535 19
X70 485 570 17


PROPERTIES

GEOMETRIC TOLERANCES

Standard Outside diameter Wall Thickness T Straightness Out-of-roundness Mass Maximum weld
D bead height
EN10219-2 +/-1 % +/-1 % 0.20% of total +/-2% +/-6% T<14.2mm:3.5mm
Max +/-10.0mm Max +/-2.0mm length T >14.2mm:4.8mm
API5L


ISO3183

<1422mm +/-0.5% <4.0mm


>1422mm As agreed

<15.0mm:+/-10% s 15.0 mm:+/-1.5mm 0.20% of total length D/t<75


D<1422mm

Else

+/-1.5% <15.0mm As agreed +10%


-3.5%

T<13.0mm:3.5mm T >13.0mm:4.8mm

as bearing piles for vertical loads. The intermediate sheet piles transfer horizontal loads to the pipes. Intermediate sheet piles can be shorter than the pipes. The table below gives only a part of the possibilities with combined walls. All kinds of combinations are possible, so tailor-made solutions can be delivered.

A combined wall is the retaining wall solution when a high horizontal or vertical bearing capacity is required. A combined wall combines pipes (primary elements) with intermediate sheet piles (secondary elements).

Structurally the pipes fulfil two functions:

  • as retaining elements for horizontal loads from soil and water pressures

Pipe Intermediary sheet pile: Double GPZ18 Intermediary sheet pile: Triple GPU18
Diameter Thickness
D b Mass lsys/m Wsys/m bsys Mass lsys/m Wsys/m
mm mm m kg/m2 cm4/m cm3/m m kg/m2 cm4/m cm3/m
GPOZ1 914 10 2.23 175 149180 3264 2.77 170 127768 2796
GPOZ2 914 12 2.23 194 174132 3810 2.77 186 147863 3236
GPOZ3 914 14 2.23 214 198750 4349 2.77 202 167622 3669
GPOZ4 1016 12 2.34 199 222648 4383 2.88 190 188201 3705
GPOZ5 1016 14 2.34 220 255271 5025 2.88 207 214699 4226
GPOZ6 1016 16 2.34 240 287501 5659 2.88 224 240877 4742
GPOZ7 1219 14 2.54 230 395902 6496 3.08 216 333340 5469
GPOZ8 1219 16 2.54 253 447898 7349 3.08 235 376217 6173
GPOZ9 1219 18 2.54 276 499372 8193 3.08 254 418663 6869
GPOZ10 1422 16 2.74 263 652705 9180 3.28 245 551760 7760
GPOZ11 1422 18 2.74 288 729298 10257 3.28 266 615751 8660
GPOZ12 1422 20 2.74 313 805231 11325 3.28 287 679191 553
GPOZ13 1524 16 2.84 268 772873 10143 3.38 249 655795 8606
GPOZ14 1524 18 2.84 294 864225 11342 3.38 271 732570 9614
GPOZ15 1524 20 2.84 320 954844 12531 3.38 293 808728 10613
GPOZ16 1626 18 2.95 299 1012366 12452 3.49 276 861615 10598
GPOZ17 1626 20 2.95 326 1119126 13765 3.49 299 951837 17089
GPOZ18 1626 22 2.95 352 1225081 15069 3.49 321 1041380 12809
GPOZ19 1829 18 3.15 308 1347086 14730 3.69 285 1 1155634 12637
GPOZ20 1829 20 3.15 336 1490373 16297 3.69 309 1 1277946 13974
GPOZ21 1829 22 3.15 364 1632701 17853 3.69 333 1 1399440 15303
GPOZ22 2032 20 3.35 346 1921455 18912 3.89 319 1 1660297 16342
GPOZ23 2032 22 3.35 375 2106103 20729 3.89 344 1819326 17907
GPOZ24 2032 24 3.35 404 2289640 22536 3.89 369 1977398 19463
GPOZ25 2540 21 3.86 381 3426296 26979 4.4 353 3010605 23706
GPOZ26 2540 23 3.86 413 3742696 29470 4.4 381 3288174 25891
GPOZ27 2540 25 3.86 445 4057578 31949 4.4 409 3564411 28066
GPOZ28 2997 21 4.32 396 5045198 33668 4.86 369 4488631 2954
GPOZ29 2997 23 4.32 429 5513686 36795 4.86 399 4905033 32733
GPOZ30 2997 25 4.32 463 5980273 39908 4.86 429 5319744 35






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