Cangzhou Spiral Steel Pipes Group Co.ltd
The Solid Foundation for Project SuccessLine Pipes
API 5L Spiral Steel Line Pipe – Engineered for High-Pressure Oil, Gas & Water Transmission
Choosing the wrong line pipe can lead to catastrophic failure, costly downtime, or project delays. As a direct spiral pipe mill with API 5L certification, Cangzhou Spiral Steel Pipes Group helps pipeline contractors and engineers secure reliable, NDT-tested SSAW line pipe in diameters from DN200 to DN3500 (8″ to 140″), with full traceability and fast roll-to-shipment lead times.
Engineered for high-pressure oil, gas, and water transmission lines. From DN200 to DN3500, with 100% NDT inspection.
Basic Info
Outer Diameter: DN200 – DN3500((8″ – 140″))
Wall Thickness: 6mm – 25.4mm (SCH 10 – SCH 80 equivalent)
Length: 6m – 18m, or as custom
End Finish: Beveled end, plain end, threaded & coupled
Coating: 3PE, FBE, Coal Tar Epoxy, Bare
Grade: Gr A, Gr B, X42, X46, X52, X56, X60, X70, X80, Q235, Q345.
Standard: API 5L PSL1 / PSL2, ISO 3183, GB/T 9711
Non-Destructive Testing (NDT): UT, X-ray, Hydrostatic,etc.
Custom sizes and grades available upon request. Contact our engineers for matching your pipeline specification.
Tested by CE/CNAS/API/ISO9001/ISO14001/ISO45001/SGS/BV
What is Pipe Line?
Pipe Line (line pipe) is a high-strength steel pipe used for transporting oil, natural gas, and water over long distances, under high pressure. Unlike structural steel pipe and Steel Pipe Piles, line pipe must meet stringent standards for pressure containment, weld integrity, and corrosion resistance.
Cangzhou Spiral Steel Pipe Group manufactures spiral welded line pipe in accordance with API 5L (PSL1 & PSL2) and ISO 3183, with diameters up to 3620mm and wall thickness up to 25.4mm.
Why do experienced buyers specify spiral welded (SSAW) line pipe over seamless or LSAW for large-diameter transmission projects?
| Advantage | Why Spiral Steel Pipe? | |
| Higher pressure resistance with weld integrity | The spiral weld seam (angled at 50-75°) only bears partial circumferential stress under high pressure – making it more fatigue-resistant than longitudinal welds. Every pipe undergoes 100% hydrostatic, X-ray, and ultrasonic testing (UT) to exceed API 5L PSL1/PSL2 requirements. | |
| Lower project cost for DN200–DN3500 pipelines | Compared to seamless pipe (limited to smaller diameters) and LSAW (higher steel plate waste), our spiral welding process uses coils with 98-99% material utilization. You get a lighter, cost-effective pipe without compromising pressure ratings (up to X80 grade). | |
| Faster delivery and flexible customization | As a mill, we control rolling, forming, welding, and coating (3PE, FBE, coal tar epoxy) in-house. For urgent projects, we can expedite 6m–18m lengths with beveled or plain ends within 25–30 days. | |
This line pipe collection covers API 5L Gr B, X42, X52, X60, X65, X70, X80, and Q235/Q345 – available in PSL1 or PSL2. Below you’ll find full chemical/mechanical properties, NDT methods, and coating specs. If you need a custom OD, wall thickness (6–25.4mm), or premium connection, click the “Request a Project Quote” form to receive a drawing-based quotation within 24 hours.
Chemical composition for pipe with t ≤ 25,0 mm (0.984 in)
Steel Grade | Mass fraction, based upon heat and product analyses % maximum | Carbon equivalent a % maximum | |||||||||
C b | Si | Mn b | P | S | V | Nb | Ti | Other c,d | CEIIW | CEpcm | |
SMLS and welded pipes | |||||||||||
pipes L245NS or BNS | 0,14 | 0,40 | 1,35 | 0,020 | 0,003 e | f | f | 0,04 | g | 0,36 | 0.19 h |
L245NO or BNO | 0,14 | 0,40 | 1,35 | 0,020 | 0,010 | d | d | 0,04 | e,f | 0,36 | 0.19g |
L290NS or X42NS | 0,14 | 0,40 | 1,35 | 0,020 | 0,003 e | 0,05 | 0,05 | 0,04 | - | 0,36 | 0.19
h |
L290NOor X42NO | 0,14 | 0,40 | 1,35 | 0,020 | 0,010 | 0,05 | 0,05 | 0,04 | f | 0,36 | 0.19g |
L320NS or X46NS | 0,14 | 0,40 | 1,40 | 0,020 | 0,003 e | 0,07 | 0,05 | 0,04 | g | 0,38 | 0.20 h |
L320NO or X46NO | 0,14 | 0,40 | 1,40 | 0,020 | 0,010 | 0,07 | 0,05 | 0,04 | e,f | 0,38 | 0.20g |
L360NS or X52NS | 0,16 | 0,45 | 1,65 | 0,020 | 0,003 e | 0,10 | 0,05 | 0,04 | g | 0,43 | 0.22 h |
L360NO or X52NO | 0,16 | 0,45 | 1,65 | 0,020 | 0,010 | 0,10 | 0,05 | 0,04 | e | 0,43 | 0.22g |
L245QS or BQS | 0,14 | 0,40 | 1,35 | 0,020 | 0,003 e | 0,04 | 0,04 | 0,04 | - | 0,34 | 0.19
h |
L245QO or BQO | 0,14 | 0,40 | 1,35 | 0,020 | 0,010 | 0,04 | 0,04 | 0,04 | f | 0,34 | 0.19g |
L290QS or X42QS | 0,14 | 0,40 | 1,35 | 0,020 | 0,003 e | 0,04 | 0,04 | 0,04 | - | 0,34 | 0.19
h |
L290QO or X42QO | 0,14 | 0,40 | 1,35 | 0,020 | 0,010 | 0,04 | 0,04 | 0,04 | f | 0,34 | 0.19g |
L320QS or X46QS | 0,15 | 0,45 | 1,40 | 0,020 | 0,003 e | 0,05 | 0,05 | 0,04 | - | 0,36 | 0.20 h |
L320QO or X46QO | 0,15 | 0,45 | 1,40 | 0,020 | 0,010 | 0,05 | 0,05 | 0,04 | f | 0,36 | 0.20g |
L360QS or X52QS | 0,16 | 0,45 | 1,65 | 0,020 | 0,003 e | 0,07 | 0,05 | 0,04 | g | 0,39 | 0.20
h |
L360QO or X52QO | 0,16 | 0,45 | 1,65 | 0,020 | 0,010 | 0,07 | 0,05 | 0,04 | e,h | 0,39 | 0.20g |
L390QS or X56QS | 0,16 | 0,45 | 1,65 | 0,020 | 0,003 e | 0,07 | 0,05 | 0,04 | g | 0,40 | 0.21 h |
L390QO or X56QO | 0,16 | 0,45 | 1,65 | 0,020 | 0,010 | 0,07 | 0,05 | 0,04 | e,h | 0,40 | 0.21
g |
L415QS or X60QS | 0,16 | 0,45 | 1,65 | 0,020 | 0,003 e | 0,08 | 0,05 | 0,04 | g,i,k | 0,41 | 0.22 h |
L415QO or X60QO | 0,16 | 0,45 | 1,65 | 0,020 | 0,010 | 0,08 | 0,05 | 0,04 | e,h | 0,41 | 0.22
g |
L450QS or X65QS | 0,16 | 0,45 | 1,65 | 0,020 | 0,003 e | 0,09 | 0,05 | 0,06 | g,i,k | 0,42 | 0.22
h |
L450QO or X65QO | 0,16 | 0,45 | 1,65 | 0,020 | 0,010 | 0,09 | 0,05 | 0,06 | e,h | 0,42 | 0.22
g |
L485QS or X70QS | 0,16 | 0,45 | 1,65 | 0,020 | 0,003 e | 0,09 | 0,05 | 0,06 | g,i,k | 0,42 | 0.22
h |
L485QO or X70QO | 0,17 | 0,45 | 1,75 | 0,020 | 0,010 | 0,10 | 0,05 | 0,06 | e,h | 0,42 | 0.22
g |
L555QO or X80QO | 0,17 | 0,45 | 1,85 | 0,020 | 0,010 | 0,10 | 0,05 | 0,06 | e,h | as agreed | |
Welded pipe | |||||||||||
L245MO or BMO | 0,12 | 0,40 | 1,25 | 0,020 | 0,010 | 0,04 | 0,04 | 0,04 | f | - | 0.19 |
L245MS or BMS | 0,10 | 0,40 | 1,25 | 0,020 | 0,002 e | 0,04 | 0,04 | 0,04 | - | - | 0.19 |
L290MO or X42MO | 0,12 | 0,40 | 1,35 | 0,020 | 0,010 | 0,04 | 0,04 | 0,04 | f | - | 0.19 |
L290MS or X42MS | 0,10 | 0,40 | 1,25 | 0,020 | 0,002 e | 0,04 | 0,04 | 0,04 | - | - | 0.19 |
L320MO or X46MO | 0,12 | 0,45 | 1,35 | 0,020 | 0,010 | 0,05 | 0,05 | 0,04 | f | - | 0.20 |
L320MS or X46MS | 0,10 | 0,45 | 1,35 | 0,020 | 0,002 e | 0,05 | 0,05 | 0,04 | - | - | 0.20 |
L360MO or X52MO | 0,12 | 0,45 | 1,65 | 0,020 | 0,010 | 0,05 | 0,05 | 0,04 | e,h | - | 0.20 |
L360MS or X52MS | 0,10 | 0,45 | 1,45 | 0,020 | 0,002 e | 0,05 | 0,06 | 0,04 | - | - | 0.20 |
L390MO or X56MO | 0,12 | 0,45 | 1,65 | 0,020 | 0,010 | 0,06 | 0,08 | 0,04 | e,h | - | 0.21 |
L390MS or X56MS | 0,10 | 0,45 | 1,45 | 0,020 | 0,002 e | 0,06 | 0,08 | 0,04 | g | - | 0.21 |
L415MO or X60MO | 0,12 | 0,45 | 1,65 | 0,020 | 0,010 | 0,08 | 0,08 | 0,06 | e,h | - | 0.21 |
L415MS or X60MS | 0,10 | 0,45 | 1,45 | 0,020 | 0,002 e | 0,08 | 0,08 | 0,06 | g,i | - | 0.21 |
L450MO or X65MO | 0,12 | 0,45 | 1,65 | 0,020 | 0,010 | 0,10 | 0,08 | 0,06 | e,h | - | 0.22 |
L450MS or X65MS | 0,10 | 0,45 | 1,60 | 0,020 | 0,002 e | 0,10 | 0,08 | 0,06 | g,i,j | - | 0.22 |
L485MO or X70MO | 0,12 | 0,45 | 1,75 | 0,020 | 0,010 | 0,10 | 0,08 | 0,06 | e,h | - | 0.22 |
L485MS or X70MS | 0,10 | 0,45 | 1,60 | 0,020 | 0,002 e | 0,10 | 0,08 | 0,06 | g,i,j | - | 0.22 |
L555MO or X80MO | 0,12 | 0,45 | 1,85 | 0,020 | 0,010 | 0,10 | 0,08 | 0,06 | e,h | - | 0.24 |
a Based upon product analysis (see 9.2.4 and 9.2.5). The CEIIW limits apply if the carbon mass fraction is greater than 0,12 % and the CEPcm limits apply if the carbon mass fraction is less than or equal to 0,12 %. b For each reduction of 0,01 % below the specified maximum for carbon, an increase of 0,05 % above the specified maximum for manganese is permissible, up to a maximum increase of 0,20 %. c Al total u 0,060 %; N u 0,012 %; Al/N W 2:1 (not applicable to titanium-killed or titanium-treated steel); Cu u 0,35 % (if agreed, Cu u 0,10 %); Ni u 0,30 %; Cr u 0,30 %; Mo u 0,15 %; B u 0,0005 %. d For welded pipe where calcium is intentionally added, unless otherwise agreed, Ca/S W 1,5 if S > 0,0015 %. For SMLS and welded pipes, the calcium concentration shall be u 0,006 %. e The maximum limit for sulfur concentration may be increased to u 0,008 % for SMLS pipe and, if agreed, to u 0,006 % for welded pipe. For such higher-sulfur levels in welded pipe, lower Ca/S ratios may be agreed. f Unless otherwise agreed, the sum of the niobium and vanadium concentrations shall be u 0,06 %. g The sum of the niobium, vanadium and titanium concentrations shall be u 0,15 %. h For SMLS pipe, the listed value may be increased by 0,03. i If agreed, the molybdenum concentration shall be u 0,35 %. j If agreed, the chromium concentration shall be u 0,45 %. k If agreed, Cr concentration shall be u 0,45% and Ni concentration shall be u 0,50%. | |||||||||||
Tensile Properties
Requirements for the results of tensile tests | |||||||
Pipe Steel Grade | Pipe body of SMLS and welded pipes | Weld seam of HFW and SAW pipes | |||||
Yield strength a Rt0,5 Mpa (psi) | Tensile strength a Rm Mpa (psi) | Ratio b Rt0,5/Rm | Elongation on 50 mm or 2 in Af % | Tensile strength c Rm Mpa (psi) | |||
minimum | maximum | minimum | maximum | maximum | minimum | minimum | |
L245NS or BNS L245QS or BQS L245MS or BMS | 245 (35 500) | 450 d (65 300) d | 415 (60 200) | 760 (110 200) | 0,93 | e | 415 (60 200) |
L245NO or BNO L245QO or BQO L245MO or BMO | 245 (35 500) | 450 e (65 300) e | 415 (60 200) | 760 (110 200) | 0,93 | f | 415 (60 200) |
L290NS or X42NS L290QS or X42QS L290MS or X42MS | 290 (42 100) | 495 (71 800) | 415 (60 200) | 760 (110 200) | 0,93 | e | 415 (60 200) |
L290NO or X42NO L290QO or X42QO L290MO or X42MO | 290 (42 100) | 495 (71 800) | 415 (60 200) | 760 (110 200) | 0,93 | f | 415 (60 200) |
L320NS or X46NS L320QS or X46QS L320MS or X46MS | 320 (46 400) | 525 (76 100) | 435 (63 100) | 760 (110 200) | 0,93 | e | 435 (63 100) |
L320NO or X46NO L320QO or X46QO L320MO or X46MO | 320 (46 400) | 520 (75 000) | 435 (63 100) | 760 (110 200) | 0,93 | f | 435 (63 100) |
L360NS or X52NS L360QS or X52QS L360MS or X52MS | 360 (52 200) | 530 (76 900) | 460 (66 700) | 760 (110 200) | 0,93 | e | 460 (66 700) |
L360NO or X52NO L360QO or X52QO L360MO or X52MO | 360 (52 200) | 525 (76 000) | 460 (66 700) | 760 (110 200) | 0,93 | f | 460 (66 700) |
L390QS or X56QS L390MS or X56MS | 390 (56 600) | 545 (79 000) | 490 (71 100) | 760 (110 200) | 0,93 | e | 490 (71 100) |
L390QO or X56QO L390MO or X56MO | 390 (56 600) | 540 (78 300) | 490 (71 100) | 760 (110 200) | 0,93 | f | 490 (71 100) |
L415QS or X60QS L415MS or X60MS | 415 (60 200) | 565 (81 900) | 520 (75 400) | 760 (110 200) | 0,93 | e | 520 (75 400) |
L415QO or X60QO L415MO or X60MO | 415 (60 200) | 565 (81 900) | 520 (75 400) | 760 (110 200) | 0,93 | f | 520 (75 400) |
| L450QS or X65QS L450MS or X65MS | 450 (65 300) | 600 (87 000) | 535 (77 600) | 760 (110 200) | 0,93 | e | 535 (77 600) |
L450QO or X65QO L450MO or X65MO | 450 (65 300) | 570 (82 700) | 535 (77 600) | 760 (110 200) | 0,93 | f | 535 (77 600) |
| L485MS or X70MS | 485 (70 300) | 635 (92 100) | 570 (82 700) | 760 (110 200) | 0,93 | e | 570 (82 700) |
L485QO or X70QO L485MO or X70MO | 485 (70 300) | 605 (87 700) | 570 (82 700) | 760 (110 200) | 0,93 | f | 570 (82 700) |
L555QO or X80QO L555MO or X80MO | 555 (80 500) | 675 (97 900) | 625 (90 600) | 825 (119 700) | 0,93 | f | 625 (90 600) |
| a For intermediate grades, the difference between the specified maximum yield strength and the specified minimum yield strength shall be as given in the table for the next higher grade, and the difference between the specified minimum tensile strength and the specified minimum yield strength shall be as given in the table for the next higher grade. For intermediate grades, the tensile strength shall be u 760 MPa (110 200 psi). b This limit applies for pipe with D > 323,9 mm (12.750 in). c For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined fo r the pipe body using footnote a). d For pipe with D < 219,1 mm (8.625 in), the maximum yield strength shall be u 495 MPa (71 800 psi). e The specified minimum elongation, Af, on 50 mm or 2 in, expressed in percent and rounded to the nearest percent, shall be as determined using the following equation: | |||||||
| where C is 1 940 for calculations using SI units and 625 000 for calculations using USC units; Axc is the applicable tensile test piece cross-sectional area, expressed in square millimetres (square inches), as follows: — for circular cross-section test pieces, 130 mm 2 (0.20 in 2) for 12,5 mm (0.500 in) and 8,9 mm (0.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6,4 mm (0.250 in) diameter test pieces; — for full-section test pieces, the lesser of a) 485 mm 2(0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm 2(0.01 in2); — for strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.01 in2); U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch). The letter "L" refers to the minimum yield strength (MYS) of the pipe (MPa). For example, L245 indicates that the minimum yield strength of the pipe is 245MPa. Letter "X": The following two or three digits represent the value of ksi for the minimum yield strength. For example, X42 represents a minimum yield strength of 42 ksi, which is approximately 290 MPa Suffixes "R", "N", "Q", "M": These letters represent the Delivery Condition of the pipeline: ·R: Hot Rolled Condition ·N: Normalized condition ·Q: Quenched and Tempered ·M: Tempered (Tempered) SUFFIX "S" DENOTES H2S ENVIRONMENTAL SUITABILITY OF PIPES. For example, L245NS indicates that the pipeline has certain resistance to sulfide stress cracking (SSC) in hydrogen sulfide environment. SUFFIX "BR" DENOTES BENDABILITY OF PIPE. For example, L245BR indicates that the pipe has good bending properties. |
Send your Request for Quote form now with fields:
Outer diameter, wall thickness, steel grade, coating requirements, quantity (ton), destination port, Email,We provide API 5L 45th Edition test certificates with each shipment.
SSAW Line Pipe Main Manufacturing Process
The manufacturing process for spiral welded steel pipeline pipes produced by Cangzhou Spiral Steel Pipe Manufacturing Group consists of the following steps: ① Uncoiling ② Straightening ③ Shear butt weld ④ Fine leveling ⑤ Edge Milling ⑥ Delivery ⑦ Pre-bending ⑧ Screw forming process ⑨ Pre-welding ⑩ Plasma pipe cutting ⑪ Tab Welding ⑫ Internal & ExtemalSubmerged Arc Welding ⑬ Tab Removal ⑭ Weld seam grinding ⑮Ultrasonic Testing (UT) ⑯ X-Ray Testing ⑰ Pipe End Expansion ⑱ Hydrostatic Test ⑲ Flat Pipe End ⑳ Ultrasonic Testing of Base Metal and Welds ㉑ X-ray & Film Examination ㉒ Final Inspection ㉓ Weight & Dimension ㉔ Coating ㉕ Marking
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
Uncoiling
Flattening
Internal Welding
External Welding
Trimming And Grinding
UT-Testing
X-Ray Testing
Hydrostatic Tester
Flat Pipe Ending
Final Testing
Anti Corrosion Treatment
Marking Labels
Specifications
| Outer Diameter(OD) (mm) | 219-3620 |
| Wall Thickness(mm) | 5-24.5 |
| Standard | API 5L GB/T 9711 ISO 3183 |
| Length(M) | 3-18.5M or Custom |
Steel Grades | GR.B, X42, X46, X52, X56, X60, X65, X70 |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
Stock Display
line-pipe-stock-show-1
line-pipe-stock-show-2
line-pipe-stock-show-3
line-pipe-stock-show-4
API 5L Pipe(SSAW) Schedule Chart
API 5L Schedule 10 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 3.76 | 0.148 | 10 | 200 | 8 | 19.97 | 13.41 | |
273.0 | 10.750 | 4.19 | 0.165 | 10 | 250 | 10 | 27.78 | 18.67 | |
323.8 | 12.750 | 4.57 | 0.180 | 10 | 300 | 12 | 35.98 | 24.19 | |
355.6 | 14.000 | 6.35 | 0.250 | 10 | 350 | 14 | 54.69 | 36.75 | |
406.4 | 16.000 | 6.35 | 0.250 | 10 | 400 | 16 | 62.65 | 42.09 | |
457 | 18.000 | 6.35 | 0.250 | 10 | 450 | 18 | 70.57 | 47.44 | |
508 | 20.000 | 6.35 | 0.250 | 10 | 500 | 20 | 78.56 | 52.78 | |
559 | 22.000 | 6.35 | 0.250 | 10 | 550 | 22 | 86.55 | 58.13 | |
610 | 24.000 | 6.35 | 0.250 | 10 | 600 | 24 | 94.53 | 63.47 | |
| 660 | 26.000 | 7.92 | 0.312 | 10 | 650 | 26 | 127.36 | 85.68 | |
711 | 28.000 | 7.92 | 0.312 | 10 | 700 | 28 | 137.32 | 92.35 | |
| 762 | 30.000 | 7.92 | 0.312 | 10 | 750 | 30 | 147.29 | 99.02 | |
| 813 | 32.000 | 7.92 | 0.312 | 10 | 800 | 32 | 157.25 | 105.69 | |
| 864 | 34.000 | 7.92 | 0.312 | 10 | 850 | 34 | 167.21 | 112.36 | |
914 | 36.000 | 7.92 | 0.312 | 10 | 900 | 36 | 176.97 | 119.03 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 20 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 6.35 | 0.250 | 20 | 200 | 8 | 33.32 | 22.38 | |
273.0 | 10.750 | 6.35 | 0.250 | 20 | 250 | 10 | 41.76 | 28.06 | |
323.8 | 12.750 | 6.35 | 0.250 | 20 | 300 | 12 | 49.71 | 33.41 | |
355.6 | 14.000 | 7.92 | 0.312 | 20 | 350 | 14 | 67.91 | 45.65 | |
406.4 | 16.000 | 7.92 | 0.312 | 20 | 400 | 16 | 77.83 | 52.32 | |
457 | 18.000 | 7.92 | 0.312 | 20 | 450 | 18 | 87.71 | 58.99 | |
508 | 20.000 | 9.53 | 0.375 | 20 | 500 | 20 | STD | 117.15 | 78.67 |
559 | 22.000 | 9.53 | 0.375 | 20 | 550 | 22 | STD | 129.14 | 86.69 |
610 | 24.000 | 9.53 | 0.375 | 20 | 600 | 24 | STD | 141.12 | 94.71 |
| 660 | 26.000 | 12.7 | 0.500 | 20 | 650 | 26 | XS | 202.74 | 136.30 |
711 | 28.000 | 12.7 | 0.500 | 20 | 700 | 28 | XS | 218.71 | 146.99 |
| 762 | 30.000 | 12.7 | 0.500 | 20 | 750 | 30 | XS | 234.68 | 157.68 |
| 813 | 32.000 | 12.7 | 0.500 | 20 | 800 | 32 | XS | 250.65 | 168.37 |
| 864 | 34.000 | 12.7 | 0.500 | 20 | 850 | 34 | XS | 266.63 | 179.06 |
914 | 36.000 | 12.7 | 0.500 | 20 | 900 | 36 | XS | 282.29 | 189.75 |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 30 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 7.04 | 0.277 | 30 | 200 | 8 | 36.82 | 24.72 | |
273.0 | 10.750 | 7.8 | 0.307 | 30 | 250 | 10 | 51.01 | 34.27 | |
323.8 | 12.750 | 8.38 | 0.330 | 30 | 300 | 12 | 65.19 | 43.81 | |
355.6 | 14.000 | 9.53 | 0.375 | 30 | 350 | 14 | STD | 81.33 | 54.62 |
406.4 | 16.000 | 9.53 | 0.375 | 30 | 400 | 16 | STD | 93.27 | 62.64 |
457 | 18.000 | 11.13 | 0.438 | 30 | 450 | 18 | 122.38 | 82.23 | |
508 | 20.000 | 12.7 | 0.500 | 30 | 500 | 20 | XS | 155.13 | 104.23 |
559 | 22.000 | 12.7 | 0.500 | 30 | 550 | 22 | XS | 171.10 | 114.92 |
610 | 24.000 | 14.27 | 0.562 | 30 | 600 | 24 | 209.65 | 140.81 | |
711 | 28.000 | 15.88 | 0.625 | 30 | 700 | 28 | 272.23 | 182.90 | |
| 762 | 30.000 | 15.88 | 0.625 | 30 | 750 | 30 | 292.20 | 196.26 | |
| 813 | 32.000 | 15.88 | 0.625 | 30 | 800 | 32 | 312.17 | 209.62 | |
| 864 | 34.000 | 15.88 | 0.625 | 30 | 850 | 34 | 332.14 | 222.99 | |
914 | 36.000 | 15.88 | 0.625 | 30 | 900 | 36 | 351.73 | 236.35 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 40 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 8.18 | 0.322 | 40 | 200 | 8 | STD | 42.55 | 28.58 |
273.0 | 10.750 | 9.27 | 0.365 | 40 | 250 | 10 | STD | 60.29 | 40.52 |
323.8 | 12.750 | 10.31 | 0.406 | 40 | 300 | 12 | 79.71 | 53.57 | |
355.6 | 14.000 | 11.13 | 0.438 | 40 | 350 | 14 | 94.55 | 63.50 | |
406.4 | 16.000 | 12.7 | 0.500 | 40 | 400 | 16 | XS | 123.31 | 82.85 |
457 | 18.000 | 14.27 | 0.562 | 40 | 450 | 18 | 155.81 | 104.76 | |
508 | 20.000 | 15.09 | 0.594 | 40 | 500 | 20 | 183.43 | 123.23 | |
610 | 24.000 | 17.48 | 0.688 | 40 | 600 | 24 | 255.43 | 171.45 | |
| 813 | 32.000 | 17.48 | 0.688 | 40 | 800 | 32 | 342.94 | 230.29 | |
| 864 | 34.000 | 17.48 | 0.688 | 40 | 850 | 34 | 364.92 | 245.00 | |
914 | 36.000 | 19.05 | 0.750 | 40 | 900 | 36 | 420.45 | 282.62 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 60 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 10.31 | 0.406 | 60 | 200 | 8 | 53.09 | 35.67 | |
273.0 | 10.750 | 12.7 | 0.500 | 60 | 250 | 10 | XS | 81.53 | 54.79 |
323.8 | 12.750 | 14.27 | 0.562 | 60 | 300 | 12 | 108.93 | 73.22 | |
355.6 | 14.000 | 15.09 | 0.594 | 60 | 350 | 14 | 126.72 | 85.13 | |
406.4 | 16.000 | 16.66 | 0.656 | 60 | 400 | 16 | 160.13 | 107.60 | |
457 | 18.000 | 19.05 | 0.750 | 60 | 450 | 18 | 205.75 | 138.30 | |
508 | 20.000 | 20.62 | 0.812 | 60 | 500 | 20 | 247.84 | 166.56 | |
559 | 22.000 | 22.23 | 0.875 | 60 | 550 | 22 | 294.27 | 197.60 | |
610 | 24.000 | 24.61 | 0.969 | 60 | 600 | 24 | 355.28 | 238.57 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 80 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 12.7 | 0.500 | 80 | 200 | 8 | XS | 64.64 | 43.43 |
273.0 | 10.750 | 15.09 | 0.594 | 80 | 250 | 10 | 95.98 | 64.49 | |
323.8 | 12.750 | 17.48 | 0.688 | 80 | 300 | 12 | 132.05 | 88.71 | |
355.6 | 14.000 | 19.05 | 0.750 | 80 | 350 | 14 | 158.11 | 106.23 | |
406.4 | 16.000 | 21.44 | 0.844 | 80 | 400 | 16 | 203.54 | 136.74 | |
457 | 18.000 | 23.83 | 0.938 | 80 | 450 | 18 | 254.57 | 171.08 | |
508 | 20.000 | 26.19 | 1.031 | 80 | 500 | 20 | 311.19 | 209.06 | |
559 | 22.000 | 28.58 | 1.125 | 80 | 550 | 22 | 373.85 | 251.05 | |
610 | 24.000 | 30.96 | 1.219 | 80 | 600 | 24 | 442.11 | 296.86 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 100 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 15.09 | 0.594 | 100 | 200 | 8 | 75.92 | 51.00 | |
273.0 | 10.750 | 18.26 | 0.719 | 100 | 250 | 10 | 114.71 | 77.10 | |
323.8 | 12.750 | 21.44 | 0.844 | 100 | 300 | 12 | 159.87 | 107.42 | |
355.6 | 14.000 | 23.83 | 0.938 | 100 | 350 | 14 | 194.98 | 130.98 | |
406.4 | 16.000 | 26.19 | 1.031 | 100 | 400 | 16 | 245.57 | 164.98 | |
457 | 18.000 | 29.36 | 1.156 | 100 | 450 | 18 | 309.64 | 208.15 | |
508 | 20.000 | 32.54 | 1.281 | 100 | 500 | 20 | 381.55 | 256.34 | |
559 | 22.000 | 34.93 | 1.375 | 100 | 550 | 22 | 451.45 | 303.16 | |
610 | 24.000 | 38.89 | 1.531 | 100 | 600 | 24 | 547.74 | 367.74 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 120 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 18.26 | 0.719 | 120 | 200 | 8 | 90.44 | 60.77 | |
273.0 | 10.750 | 21.44 | 0.844 | 120 | 250 | 10 | 133.01 | 89.38 | |
323.8 | 12.750 | 25.4 | 1.000 | 120 | 300 | 12 | XXS | 186.92 | 125.61 |
355.6 | 14.000 | 27.79 | 1.094 | 120 | 350 | 14 | 224.66 | 150.93 | |
406.4 | 16.000 | 30.96 | 1.219 | 120 | 400 | 16 | 286.66 | 192.61 | |
457 | 18.000 | 34.93 | 1.375 | 120 | 450 | 18 | 363.58 | 244.37 | |
508 | 20.000 | 38.1 | 1.500 | 120 | 500 | 20 | 441.52 | 296.65 | |
559 | 22.000 | 41.28 | 1.625 | 120 | 550 | 22 | 527.05 | 353.94 | |
610 | 24.000 | 46.02 | 1.812 | 120 | 600 | 24 | 640.07 | 429.79 | |
API 5L Schedule 140 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
273.0 | 10.750 | 25.4 | 1.000 | 140 | 250 | 10 | XXS | 155.10 | 104.23 |
323.8 | 12.750 | 28.58 | 1.125 | 140 | 300 | 12 | 208.08 | 139.81 | |
355.6 | 14.000 | 31.75 | 1.250 | 140 | 350 | 14 | 253.58 | 170.37 | |
406.4 | 16.000 | 36.53 | 1.438 | 140 | 400 | 16 | 333.21 | 223.85 | |
457 | 18.000 | 39.67 | 1.562 | 140 | 450 | 18 | 408.28 | 274.48 | |
508 | 20.000 | 44.45 | 1.750 | 140 | 500 | 20 | 508.15 | 341.41 | |
559 | 22.000 | 47.63 | 1.875 | 140 | 550 | 22 | 600.67 | 403.38 | |
610 | 24.000 | 52.37 | 2.062 | 140 | 600 | 24 | 720.19 | 483.57 | |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
API 5L Schedule 160 | |||||||||
Outer Diameter | Wall Thickness | Schedule No. | DN | NPS | Classification Level | Weight | |||
mm | inch | mm | inch | kg/m | lb/ft | ||||
219.1 | 8.625 | 23.01 | 0.906 | 160 | 200 | 8 | 111.27 | 74.76 | |
273.0 | 10.750 | 28.58 | 1.125 | 160 | 250 | 10 | 172.27 | 115.75 | |
323.8 | 12.750 | 33.37 | 1.312 | 160 | 300 | 12 | 238.69 | 160.42 | |
355.6 | 14.000 | 35.71 | 1.406 | 160 | 350 | 14 | 281.72 | 189.29 | |
406.4 | 16.000 | 40.49 | 1.594 | 160 | 400 | 16 | 365.38 | 245.48 | |
457 | 18.000 | 45.24 | 1.781 | 160 | 450 | 18 | 459.39 | 308.79 | |
508 | 20.000 | 50.01 | 1.969 | 160 | 500 | 20 | 564.85 | 379.53 | |
559 | 22.000 | 53.98 | 2.125 | 160 | 550 | 22 | 672.30 | 451.49 | |
610 | 24.000 | 59.54 | 2.344 | 160 | 600 | 24 | 808.27 | 542.64 | |
Cooperative Customers
Cangzhou Spiral Steel Pipe Manufacturing Group has a lot of cooperative enterprises in the world for pipeline pipes, including state-owned enterprises such as PetroChina, Sinopec, CNOOC, Saudi Water Bureau, Shell and other international top brands. It was highly praised by customers.
PetroChina
Sinopec
CNOOC
Shell
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
Where Our Line Pipe Is Used?
| Scene | Description |
| Oil & Gas Transmission | Long-distance onshore/offshore pipelines, gathering lines, and refinery feed lines. |
| High-Pressure Water Injection | Waterflood lines for enhanced oil recovery (EOR) and industrial water supply. |
| City Gas Distribution | High-pressure natural gas transmission from gate stations to city networks. |
Comparison Of Differences
| Parameter | Standard Line Pipe | Cangzhou Spiral Line Pipe (Enhanced) |
| Standard | API 5L (sampling inspection) | API 5L PSL2 – 100% NDT per pipe |
| Steel Grade | Gr. B / X42 | X42 – X70 (higher strength available) |
| Weld Inspection | Random UT | 100% UT + 100% X-ray |
Coating Thickness | 2.5 – 3.0mm | 3.5 – 6.0mm (3PE/3PP) |
Salt Spray Test | 300 – 500 hrs | ≥1500 hrs CASS |
✅ API 5L PSL1/PSL2 Certified
✅ 100% NDT (UT + Hydrostatic + X-ray)
✅ 25-30 Day Mill-to-Port Lead Time
Our line pipe doesn't just meet API 5L – it exceeds it, with 100% per-pipe inspection and marine-grade corrosion protection. Contact Us Now!
FAQ
Q1: What is the difference between line pipe and structural pipe?
A: Line pipe is designed for high-pressure fluid transmission and must meet API 5L standards including hydrostatic testing. Structural pipe (ASTM A500/A53) is for load-bearing construction and is not pressure-rated.
Q2: What is API 5L PSL1 vs PSL2?
A: PSL2 has stricter chemical and mechanical requirements, plus mandatory non-destructive testing (NDT) – required for high-pressure oil & gas pipelines.
Q3: Can you supply large diameter line pipe for subsea pipelines?
A: Yes – up to DN3500 (140″) with 3PE coating suitable for offshore environments.
Q4: What is your export experience?
A: 10+ years exporting to Middle East, Southeast Asia, Africa, and South America – with complete shipping documents and third-party inspection support.
Ready to Source API 5L Line Pipe?
Get a quote within 24 hours – include your diameter, grade, quantity, and coating requirement.
📧 Email: richard@ssawpipe.com
📞 WhatsApp: +86 15822968134
25 results
ViewShowcase
Carbon steel SSAW pipe API 5L
We offer high-quality steel pipes: DIN EN 10220 spiral welded, API 5L spiral, heavy-duty drill, ARC welded pile, cold-rolled carbon, & spiral round. Made with advanced processes, they boast high strength, corrosion resistance, and good welding. Ideal for oil/gas, construction, bridges, machinery. Customized services available to meet industry demands.
Carbon steel line pipe as per API 5L SSAW/SAWH pipes large outside diameter
