SSAW Welded Pipes Manufacturer-Datang

SSAW steel pipe (spiral submerged arc welded steel pipe) is formed by spiral bending of hot-rolled strip steel, and spiral seam steel pipe (also called spiral welded pipe, spiral pipe spiral steel pipe) is formed by automatic welding of submerged arc for inner and outer joints.

SSAW Steel Pipes Materials / Grades

  • Carbon Structural Steel: Q235A, Q235B

  • Quality Carbon Structural Steel: 10#, 20#

  • Low-Alloy High-Strength Steel: Q345 (16Mn)

  • Pipeline Steel (API 5L / GB/T 9711):

    • L245 (Grade B), L290 (X42), L320 (X46), L360 (X52), L390 (X56), L415 (X60), L450 (X65), L485 (X70), L555 (X80)

    • L290NB/MB (X42N/M), L360NB/MB (X52N/M), L390NB/MB (X56N/M), L415NB/MB (X60N/M), L450MB (X65M), L485MB (X70M), L555MB (X80M)

SSAW Steel Pipe Applications

Spiral steel pipes are mainly used in water supply engineering, the petrochemical industry, the chemical industry, the power industry, agricultural irrigation, and urban construction. They are one of the 20 key products developed in China.

  • Liquid Transportation: Water supply, drainage, and petroleum/oil transport.

  • Gas Transportation: Coal gas, steam, liquefied petroleum gas (LPG), and natural gas.

  • Structural Use: Piling pipes, bridges, docks, roads, and structural piping for construction.

Ssaw steel pipes manufacturer by datang

 

Ssaw spiral welded pipe manufacturer

 

SSAW Steel Pipes Nominal Outer Diameter, Nominal Wall Thickness, and Unit Length Mass

Nominal Outside Diameter Nominal Wall Thickness
mm in 6 7 8 9 10 11 12 13 14 15 16 18 20 22
219.1 8-5/8 31.53 36.61 41.65
273.1 10-3/4 39.52 45.94 52.30
323.9 12-3/4 47.04 54.71 62.32 69.89 77.41
(325) 47.20 54.90 62.54 70.14 77.68
355.6 14 51.73 60.18 68.58 76.93 85.23
(377.0) 54.89 63.87 72.80 81.67 90.50
406.4 16 59.25 68.95 78.60 88.20 97.76 107.26 116.72
(426.0) 62.41 72.33 82.46 92.55 102.59 112.58 122.51
457 18 66.73 77.68 88.58 99.44 110.24 120.99 131.69
(478.0) 69.84 81.30 92.72 104.09 115.41 126.69 137.90
508.0 20 74.28 86.49 98.65 110.75 122.81 134.82 146.79 158.69 170.56
(529.0) 77.38 90.11 102.78 115.40 127.99 140.52 152.99 165.43 177.80
559.0 22 81.82 95.29 108.70 122.07 135.38 148.65 161.88 175.04 188.17
610.0 24 89.37 104.10 118.77 133.39 147.97 162.48 176.97 191.40 205.78
(630.0) 92.33 107.54 122.71 137.83 152.90 167.92 182.89 197.81 212.68
660.0 26 96.77 112.73 128.63 144.48 160.30 176.05 191.77 207.43 223.04
711.0 28 104.32 121.53 138.70 155.81 172.88 189.89 206.86 223.78 240.65 257.47 274.24
(720.0) 105.65 123.09 140.47 157.81 175.10 192.34 209.52 226.66 243.75 260.80 277.79
762.0 30 111.86 130.34 148.76 167.13 185.45 203.73 221.95 240.13 258.26 276.33 294.36
813.0 32 119.41 139.14 158.82 178.45 198.03 217.56 237.05 256.48 275.86 295.20 314.48
(820.0) 120.45 140.35 160.20 180.00 199.76 219.46 239.12 258.72 278.28 297.79 317.25
864.0 34 147.94 168.88 189.77 210.61 231.40 252.14 272.83 293.48 314.06 334.61
914.0 39 178.75 200.87 222.94 244.96 266.94 288.86 310.73 332.56 354.34
(920.0) 179.93 202.20 224.42 246.59 268.70 290.78 312.79 334.78 356.68
965.0 38 188.81 212.19 235.52 258.80 282.03 305.21 328.34 351.43 374.46
1016.0 40 198.87 223.51 248.09 272.63 297.12 321.56 345.95 370.29 394.58 443.02
(1020.0) 199.66 224.39 249.08 273.72 298.31 322.84 347.33 371.77 396.16 444.77
1067.0 42 208.93 234.83 260.67 286.47 312.21 337.91 363.56 389.16 414.71 465.66
1118.0 44 218.99 246.15 273.25 300.30 327.31 354.26 371.17 408.02 434.83 488.30
1168.0 46 228.86 257.24 285.58 313.87 342.10 370.29 398.43 426.52 454.56 510.49
1219.0 48 238.92 268.56 298.16 327.70 357.20 386.64 416.04 445.39 474.68 553.13
(1220.0) 239.12 268.79 298.40 327.97 357.49 386.96 416.38 445.76 475.08 533.58
1321.0 52 291.20 323.31 327.97 387.38 419.34 451.26 483.12 514.93 578.41
(1420.0) 347.72 355.37 416.66 451.08 485.41 519.74 553.96 622.32 690.52
1422.0 56 348.22 382.23 417.27 451.72 486.13 520.48 554.79 623.25 691.51 759.58
1524.0 60 373.38 410.44 447.46 484.43 521.34 558.21 595.03 668.52 741.82 814.91
(1620.0) 397.03 436.48 457.84 515.20 554.46 593.73 623.87 711.11 789.12 867.00
1626.0 64 398.53 438.11 477.64 517.13 556.56 595.95 635.28 713.80 792.13 810.26
1727.0 68 423.44 465.51 507.53 549.51 591.43 633.31 675.13 758.64 841.94 925.05
(1820.0) 446.37 490.74 535.06 579.32 623.50 667.71 711.79 799.92 887.81 975.51
1829.0 72 493.18 582.26 626.65 671.04 714.20 803.92 890.77 980.39
1930.0 76 661.52 708.40 755.23 848.75 942.07 1035.19
(2020.0) 692.60 741.69 790.75 888.70 986.41 1084.02
2032.0 80 696.74 746.13 795.48 894.03 992.38 1090.53
(2220.0) 761.65 815.68 869.66 977.50 1085.80 1192.53
(2420.0) 948.58 1066.26 1183.75 1301.04
(2540.0) 100 995.93 1119.53 1242.94 1366.15
(2845.0) 112 1116.28 1254.93 1393.37 1531.63

Note:

1.Pipes can be supplied in sizes intermediate between the nominal outside diameters and nominal wall thicknesses listed in this table, subject to agreement between the supplier and the buyer.
2.The nominal outside diameters marked with parentheses in this table are for reference only.

Physical and Chemical Properties of SSAW Steel Pipes

Standard Steel Grade Chemical Composition Other Tensile Properties Charpy
C max Mn max P max S max Si max Y.S. min T.S. min D≤168.3mm D>168.3mm
GB/T3091-2008 Q215A ≤0.15 0.25-1.20 0.045 0.05 0.35 Nb/V/Ti See GB/T1591-94 215 335 15 >31 –
Q215B ≤0.15 0.25-0.55 0.045 0.045 0.35 215 335 15 >31 –
Q235A ≤0.22 0.30-0.65 0.045 0.05 0.35 235 375 15 >26 –
Q235B ≤0.20 0.30-1.80 0.045 0.045 0.35 235 375 15 >26 –
Q295A 0.16 0.80-1.50 0.045 0.045 0.55 295 390 13 >23 –
Q295B 0.16 0.80-1.50 0.04 0.04 0.55 295 390 13 >23 –
Q345A 0.2 1.00-1.60 0.045 0.045 0.55 345 510 13 >21 –
Q345B 0.2 1.00-1.60 0.04 0.04 0.55 345 510 13 >21 –
GB/T9711.1-1997 L175 0.21 0.6 0.03 0.03 – – 175 315 – 27 –
L210 0.21 0.9 0.03 0.03 – 210 335 – 25 –
L245 0.26 1.15 0.03 0.03 – 245 415 – 21 –
L290 0.28 1.25 0.03 0.03 – 290 415 – 21 –
L320 0.3 1.25 0.03 0.03 – 320 435 – 20 –
L360 0.3 1.25 0.03 0.03 – 360 460 – 19 –
L390 0.26 1.35 0.03 0.03 – 390 490 – 18 –
L415 0.26 1.35 0.03 0.03 – 415 520 – 17 –
L450 0.26 1.4 0.03 0.03 – 450 535 – 17 –
L485 0.23 1.6 0.03 0.03 – 485 570 – 16 –
L555 0.18 1.8 0.03 0.03 – 555 625 – 15 –
 API 5L (PSL1) (Timax)
A25 0.21 0.6 0.03 0.03 – Grade B Nb+V≤0.03%, ≥B,Grade steel may add Nb, V or their,combination, and Nb+V+Ti≤0.15% Grade B Nb+V≤0.03% Steel≥Grade B,(Niobium Vanadium Titanium or combinations maybe used but Nb+V+Ti≤0.15%) 172 310 – Not required or optional: Impact energy and shear area as one or two toughness criteria
A 0.22 0.9 0.03 0.03 – 207 331
B 0.26 1.2 0.03 0.03 0.04 241 414
X42 0.26 1.3 0.03 0.03 0.04 290 414
X46 0.26 1.4 0.03 0.03 0.04 317 434
X52 0.26 1.4 0.03 0.03 0.04 359 455
X56 0.26 1.4 0.03 0.03 0.04 386 490
X60 0.26 1.4 0.03 0.03 0.04 414 517
X65 0.26 1.45 0.03 0.03 0.06 448 531
X70 0.26 1.65 0.03 0.03 0.06 483 565

 

Execution Standards for Spiral Steel Pipes

Standardization Code API ASTM BS DIN GB/T JIS ISO YB SY/T SNV
Standards 5CT A53 1387 1626 3091 3442 559 4028 5037 OS-F101
5L A120 10219 9711.1 3444 3181.1 5040
A135 9711.2 3452 3183.2
A252 14291 3454
A500 13793 3466
A589

 

Standard Steel Grade C Si Mn P S V Nb Ti Others CEV (max) Yield Strength Rt0.5​ (MPa) Tensile Strength Rm​ Min (MPa) Tensile Strength Rm​ Max (MPa) Yield Ratio (max) Elongation A Min (%)
GB/T 9711.2-1999 L245NB 0.16 0.4 1.1 0.025 0.02 – – – 1) 0.42 245 440 415 0.8 22
L245MB 0.16 0.45 1.5 0.025 0.02 0.04 0.04 – 1) 0.4 245 440 415 0.85 22
L290NB 0.17 0.4 1.2 0.025 0.02 0.05 0.05 0.04 1) 0.42 290 440 415 0.8 21
L360MB 0.16 0.45 1.5 0.025 0.02 0.04 0.04 – 1) 0.4 290 440 415 0.85 21
L360NB 0.2 0.45 1.6 0.025 0.02 0.1 0.05 0.04 1) 2) 0.45 360 510 460 0.85 20
L415MB 0.16 0.45 1.6 0.025 0.02 0.05 0.05 0.04 1) 0.41 360 510 460 0.85 20
L415NB 0.21 0.45 1.6 0.025 0.02 0.15 0.05 0.04 1) 2) 3) Agreement 415 565 520 0.85 18
L450MB 0.16 0.45 1.6 0.025 0.02 0.08 0.05 0.06 1) 2) 3) 0.42 415 565 520 0.85 18
L485MB 0.16 0.45 1.6 0.025 0.02 0.1 0.05 0.06 1) 2) 3) 0.43 450 570 535 0.87 18
L485MB 0.16 0.45 1.7 0.025 0.02 0.1 0.06 0.06 1) 2) 3) 0.43 485 605 570 0.9 18
L555MB 0.16 0.45 1.8 0.025 0.02 0.1 0.06 0.06 1) 2) 3) Agreement 555 675 625 0.9 18
Standard Steel Grade C (max) Mn (max) P (max) S (max) Ti (max) Other CE Pcm​ (max) CE IIW (max) Yield Strength (MPa) [min] Yield Strength (MPa) [max] Tensile Strength (MPa) [min] Tensile Strength (MPa) [max]
API Spec 5L (PSL2) B 0.22 1.2 0.025 0.015 0.04 – 0.25 0.43 241 448 414 758
X42 0.22 1.3 0.025 0.015 0.04 – 0.25 0.43 290 496 414 758
X46 0.22 1.4 0.025 0.015 0.04 – 0.25 0.43 317 524 434 758
X52 0.22 1.4 0.025 0.015 0.04 – 0.25 0.43 359 531 455 758
X56 0.22 1.4 0.025 0.015 0.04 – 0.25 0.43 386 544 490 758
X60 0.22 1.4 0.025 0.015 0.04 – 0.25 0.43 414 565 517 758
X65 0.22 1.45 0.025 0.015 0.04 – 0.25 0.43 448 600 531 758
X70 0.22 1.65 0.025 0.015 0.04 – 0.25 0.43 483 621 565 758
X80 0.22 1.85 0.025 0.015 0.04 – 0.25 0.43 552 690 621 827