Dimensions, Equipment and Manufacturing Standards

Steel pipe is a unique versatile product, ideal for a wide range of use in the transmission of liquid and the construction of large projects. Steel pipes are crucial for the development of water supply and irrigation systems, and they are used in a variety of industries.

Typical uses included:

  • Water supply and Wastewater pipeline
  • Cooling water piping & penstocks for power plant
  • Driving pipe & tunnel liner
  • Dredging pipe
  • Fire mains
  • Irrigation & Industrial application
  • Structure for building & caissons foundation
  • Piling for building, bridge, and offshore construction
  • Others

Schedule of Wall Thickness and Cement Mortar Lining Thickness for Steel Pipes and Fittings

Nominal Diameter (mm) Outside Diameter of Pipe and Fittings (mm) Length of Underground Pipe and Aboveground Pipe (mm) Length of Sleeve Pipe (mm) Wall Thickness (Before Lining) Underground Pipe and Sleeve Pipe (mm) Wall Thickness (Before Lining) Aboveground Pipe (mm) Cement Mortar Lining Thickness (mm)
150 168.3 ± 1.6 6.00 ± 0.05 3.00 ± 0.05 3.45 ± 0.25 5.50 ± 0.25 6 ± 2, -1
200 219.1 ± 1.6 6.00 ± 0.05 3.00 ± 0.05 4.50 ± 0.25 6.00 ± 0.25 6 ± 2, -1
250 273.0 ± 1.6 6.00 ± 0.05 3.00 ± 0.05 4.80 ± 0.25 6.00 ± 0.25 6 ± 2, -1
300 323.9 ± 1.6 6.00 ± 0.05 3.00 ± 0.05 6.00 ± 0.25 6.00 ± 0.25 6 ± 2, -1
400 406.4 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 6.00 ± 0.25 7.90 ± 0.25 8 ± 3, -2
500 508.0 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 6.00 ± 0.25 7.90 ± 0.25 8 ± 3, -2
600 610.0 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 6.00 ± 0.25 7.90 ± 0.25 10 ± 3, -2
800 812.8 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 7.90 ± 0.25 12.70 ± 0.25 10 ± 3, -2
900 914.4 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 7.90 ± 0.25 12.70 ± 0.25 10 ± 3, -2
1000 1016.0 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 9.50 ± 0.25 12.70 ± 0.25 12 ± 3, -2
1100 1117.6 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 9.50 ± 0.25 12.70 ± 0.25 12 ± 3, -2
1200 1219.2 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 11.10 ± 0.25 15.90 ± 0.25 12 ± 3, -2
1400 1422.4 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 12.70 ± 0.25 15.90 ± 0.25 12 ± 3, -2
1500 1524.0 ± 1.6 9.00 ± 0.05 3.00 ± 0.05 12.70 ± 0.25 19.10 ± 0.25 12 ± 3, -2
1800 1820.0 ± 3.0 6.00 ± 0.05 3.00 ± 0.05 15.90 ± 0.25 25.40 ± 0.25 14 ± 3, -2
2500 2520.0 ± 3.0 6.00 ± 0.05 3.00 ± 0.05 25.40 ± 0.25 – –
3000 3020.0 ± 3.0 6.00 ± 0.05 3.00 ± 0.05 27.00 ± 0.25 – –

The following steel grades may be used:

  1. Steel plate shall conform to ASTM A283 “Low and Intermediate Tensile Strength Carbon Steel Plates” Grade C or D.
  2. Steel sheet or coil shall conform to ASTM A570 “Steel, Sheet and Strip, Carbon, Hot Rolled, Structural Quality” Grade 30, 33, 36, 40, 45 or 50.
  3. Steel conforming to JIS G 3457 “Arc Welded Carbon Steel Pipes.”
  4. JIS G 3101 “Hot Rolled Steels for General Structures” Class SS400.
  5. BS EN 10025 “Hot Rolled Products of Steel Structural Steels” Grade S275 JR, S275 JO, S355 JR, S355 JO.
  6. Others.

Hot Rolled Steel Plates & Coils

Standard Yield Strength (N/mm²) Tensile Strength (N/mm²) Standard Yield Strength (N/mm²) Tensile Strength (N/mm²)
JIS G3101 SS400 245 min. 402–510 ASTM A570 Gr. 36 250 min. 365 min.
SS490 284 min. 490–608 Gr. 40 275 min. 380 min.
JIS G3106 SM400 245 min. 402–510 ASTM A570 Gr. 45 310 min. 415 min.
SM490 324 min. 490–608 Gr. 50 345 min. 450 min.
ASTM A283 Gr. C 205 min. 380–450 ASTM A572 Gr. 42 290 min. 415 min.
Gr. D 230 min. 415–495 Gr. 50 345 min. 450 min.
ASTM A36 250 min. 400–550 BS 4360 Gr. 50B 355 min. 490 min.

Available Dimensions & Weights for Steel Pipes & Steel Pipe Piles

Unit: kg/m
4.5 6 7.9 9 9.5 11.1 12 12.7 14 16 18 19 20 22 25 30 40 50
168.3 18 24 31.2 35 37
219.1 24 31.5 41 46 49
273 30 39.5 52 59 66 72 77
324 35 47 62 70 74 86 92
355.6 40 51.7 67.7 77 81 94.3 102
406.4 45 59.2 77.6 88.2 93 108 117 123 135
508 56 74.3 97.4 111 117 136 147 155 171 194
609.6 67 89.3 117 133 141 164 177 187 206 234
711.2 104 137 156 164 192 207 219 241 274 308 324 341 374 423
812.8 119 157 178 188 219 237 251 276 314 353 372 391 429 486
914.4 134 177 201 212 247 267 282 311 354 398 420 441 484 548
1016 149 196 223 236 275 297 314 346 395 443 467 491 539 611 729
1117.6 164 216 246 260 303 327 346 381 435 488 515 541 594 674 805
1219.2 180 236 269 283 331 357 378 416 475 533 562 591 650 736 880
1371.6 202 266 302 319 372 402 426 469 535 601 634 667 732 830 993 1313 1630
1422.4 210 276 314 331 386 417 441 486 555 623 658 692 760 861 1030 1364 1692
1524 225 295 335 355 414 447 473 521 595 668 705 742 815 924 1105 1464 1817
1620 314 358 377 414 470 503 554 633 711 750 789 867 983 1176 1559 1936
1820 353 402 424 495 535 566 624 712 800 844 888 975 1107 1324 1756 2182
2020 392 446 471 550 594 629 693 791 889 938 986 1084 1230 1472 1953 2429
2520 489 557 588 687 742 785 865 988 1111 1172 1233 1355 1538 1842 2446 3046
3020 587 668 705 824 890 942 1038 1185 1333 1406 1480 1626 1846 2212 2939 3662
3220 713 752 878 949 1004 1104 1264 1421 1500 1578 1735 1970 2360 3137 3909
3420 757 799 933 1008 1067 1176 1343 1510 1594 1677 1843 2093 2580 3334 4155
3520 779 822 960 1038 1098 1210 1383 1554 1640 1726 1898 2155 2582 3433 4279
The diameter and wall thickness other than those given in the above table are also available.

Formulas for Section Properties and Weights of Steel Pipes:

  • Weight (W):
    W=0.02466(D−t)W = 0.02466 (D – t)W=0.02466(D−t) kg/m
  • Cross Section Area of Steel (A):
    A=π×(D−t)×t×10−2A = \pi \times (D – t) \times t \times 10^{-2}A=π×(D−t)×t×10−2 cm²
  • Moment of Inertia (I):
    I=π64(D4−d4)×10−4I = \frac{\pi}{64} (D^4 – d^4) \times 10^{-4}I=64π​(D4−d4)×10−4 cm⁴
  • Section Modulus (Z):
    Z=π32×(D3−d3)×10−3Z = \frac{\pi}{32} \times (D^3 – d^3) \times 10^{-3}Z=32π​×(D3−d3)×10−3 cm³
  • Radius of Gyration (r):
    r=IAr = \sqrt{\frac{I}{A}}r=AI​​

Where:

  • DDD = Outside diameter (mm)
  • ttt = Wall thickness (mm)
  • ddd = Inside diameter (mm)

Coating Standards

ApplicationType of Lining and CoatingStandardApplication
ExteriorCoal tar Enamel and Tape – Hot ApplicationAWWA C203Underground steel pipes and fittings
 Tape Coating Systems – Cold ApplicationAWWA C214Underground steel pipes
  AWWA C209Underground fittings, connections, and special sections
 Coal tar enamel and Glass ClothJIS G3492Underground steel pipes and fittings
 Coal tar EpoxyJWWA K115Underwater or underground steel pipes and pipe piles
 Coal tar or Bitumen enamel wrappingBS 534Underground steel pipes and fittings
 Non-bleeding type Coal tar epoxy and MIO paintMWA, PWAAboveground steel pipes and fittings
InteriorLiquid Epoxy LiningAWWA C210All steel pipes and fittings
 Coal tar Epoxy LiningJWWA K115Underwater or underground steel pipes
 Cement Mortar LiningAWWA C205All steel pipes and fittings
 Coal tar or Bitumen Enamel LiningBS 534All steel pipes and fittings
Notes:
  • AWWA C203: “Coal-tar Protective Coatings and Linings for Steel Water Pipelines – Enamel and Tape – Hot Applied”
  • AWWA C205: “Cement – Mortar Protective Lining and Coating for Steel Water Pipe – 4 in. (100 mm) and Larger – Shop Applied”
  • AWWA C210: “Liquid Epoxy Coating Systems for the Interior and Exterior of Steel Water Pipelines”
  • AWWA: “American Water Works Association”
  • MWA: “Metropolitan Waterworks Authority”
  • PWA: “Provincial Waterworks Authority”

Spiral Forming Machine

Bendroll Forming Machine

Hydrotest Forming Machine

ASIAN STEEL PRODUCT Specifications

Received ISO 9002 quality system certification from a standards certification institute in Japan, being the first rubber manufacturer in Thailand to receive ISO 9002 quality system certification for synthetic rubber production

Application

Hydrostatic Pressure Test

All pipes (except for pile pipes) must undergo hydrostatic pressure testing before coating. The maximum length of pipe that can be tested is 12 meters.

Application

Corrosion Protection System

To ensure long service life, pipes must be coated both externally and internally according to their usage. ASP is equipped with machinery and equipment for pipe coating that meets international standards.

Before coating, the pipe surface must be cleaned to remove mill scale or other contaminants by steel shot blasting until the surface is clean, according to SSPC-SP10 or Sa 2.5 standards, or other methods as recommended by the pipe coating material manufacturer.

Application

External Pipe Coating/Wrapping

External pipe coating comes in various forms using different materials. The company specializes in various pipe coating methods such as:

  1. Coating with coal tar enamel, fiber glass mat, and fiber glass wrap according to AWWA C203, BS 534 standards
  2. Coating with tape according to AWWA C214, C209 standards
  3. Coating with bitumen or asphalt according to BS 534 standard
  4. Coating with coal tar epoxy
  5. Coating with paint for above-ground pipes
  6. Other coating methods according to customer requirements
Application

Internal Pipe Coating/Lining

Internal pipe coating uses various materials including Liquid epoxy, Cement mortar, and Coal tar epoxy or other materials.

Available types of internal coating:

  1. Liquid epoxy lining and Coal tar epoxy lining to AWWA C210 & JWWA K115
  2. Cement mortar lining in accordance with AWWA C205, BS 534, PWA
  3. Coal tar or bitumen lining to BS 534
  4. Other coating/lining on customer’s request
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