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Spiral Welded Steel Pipe
Spiral Welded Steel Pipe

Spiral Welded Steel Pipe

SSAW (Spiral Submerged Arc Welded)steel pipe is a high-strength, cost-effective steel pipe formed by welding hot-rolled coils in a spiral (helical) pattern, using inner and outer submerged arc technology. Known for large diameter capabilities (typically 20-100 inches), they are ideal for oil/gas, water transport, and piling.
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Products Description

Product Name Spiral Welded Steel Pipe
Standard ASTM, JIS, DIN, EN, GB
Element C, Si, Mn, P, S
Shape Round
Base Plate Low carbon structural steel and low alloy structural steel
Welding Method Single-sided welding and double-sided welding
Diameter 219mm-3620mm
Length 6000mm-18000mm
Thickness 5mm-26mm
Grade A252 GRA,GRB,GRC, Q235A, Q235B, 0Cr13, 16Mn, 20#, Q355, L245, L290, X42, X46, etc.
Surface Spiral weld
Feature High strength, good corrosion resistance, good welding quality
Applications For oil and gas pipelines

 

Standard & Class

 

Classfication Standard Main Products
Steel Pipe for Fluid Service GB/T 14291 Welded pipe for mine fluid sevice
GB/T 3091 Welded pipe for low pressure fluid service
SY/T 5037 Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service
ASTM A53 Black and hot-hipped galvanized welded and seamless steel pipe
BS EN10217-2 Welded steel tybes for pressure purposes - delivery technical conditions - part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties
BS EN10217-5 Welded steel tybes for pressure purposes - delivery technical conditions - part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties
Steel Pipe for Ordinary Structure GB/T 13793 Longitudinally electric resistance welded steel pipe
SY/T 5040 Spirally submerged arc welded steel pipe piles
ASTM A252 Welded and seamless steel pipe piles
BS EN10219-1 Cold formed welded structural hollow sections of non-alloy and fine grain steels - part1: Technical delivert conditions
BS EN10219-2 Cold formed welded structural hollow sections of non-alloy and fine grain steels - part2: tolerances dimmsions and sectional properties
Line Pipe GB/T 9711.1 Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)
GB/T 9711.2 Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe)
API 5L PSL1/2 Line pipe
Casing API 5CT/ ISO 11960 PSL1 Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries

 

Chemical Analysis and Mechanical Properties

Standard Grade Chemical Composition(max)% Mechanical Properties(min)
C Si Mn P S Tensile Strength(Mpa) Yield Strength(Mpa)
API 5L PSL1 A 0.22 - 0.9 0.03 0.03 335 335
B 0.26 - 1.2 0.03 0.03 415 415
X42 0.26 - 1.3 0.03 0.03 415 415
X46 0.26 - 1.4 0.03 0.03 435 435
X52 0.26 - 1.4 0.03 0.03 460 460
X56 0.26 - 1.4 0.03 0.03 490 490
X60 0.26 - 1.4 0.03 0.03 520 520
X65 0.26 - 1.45 0.03 0.03 535 535
X70 0.26 - 1.65 0.03 0.03 570 570
API 5L PSL2 B 0.22 0.45 1.2 0.025 0.015 415 415
X42 0.22 0.45 1.3 0.025 0.015 415 415
X46 0.22 0.45 1.4 0.025 0.015 435 435
X52 0.22 0.45 1.4 0.025 0.015 460 460
X56 0.22 0.45 1.4 0.025 0.015 490 490
X60 0.12 0.45 1.6 0.025 0.015 520 520
X65 0.12 0.45 1.6 0.025 0.015 535 535
X70 0.12 0.45 1.7 0.025 0.015 570 570
X80 0.12 0.45 1.85 0.025 0.015 625 625
GB/T 9711.1 L210 - - 0.9 0.03 0.03 335 335
L245 - - 1.15 0.03 0.03 415 415
L290 - - 1.25 0.03 0.03 415 415
L320 - - 1.25 0.03 0.03 435 435
L360 - - 1.25 0.03 0.03 460 460
L390 - - 1.35 0.03 0.03 490 490
L415 0.26 - 1.35 0.03 0.03 520 520
L450 0.26 - 1.4 0.03 0.03 535 535
L485 0.23 - 1.6 0.03 0.03 570 570
GB/T3091/ SY/T503 Q195 0.12 0.3 0.5 0.035 0.04 315 315
Q215B 0.15 0.35 1.2 0.045 0.045 335 335
Q235B 0.2 0.35 1.4 0.045 0.045 370 370
Q345B 0.2 0.5 1.7 0.035 0.035 470 470
ASTM A53 A 0.25 0.1 0.95 0.05 0.045 330 330
B 0.3 0.1 1.2 0.05 0.045 415 415
ASTM A252 1 - - - 0.05 - 345 345
2 - - - 0.05 - 414 414
3 - - - 0.05 - 455 455
EN10217-1 P195TR1 0.13 0.35 0.7 0.025 0.02 320 320
P195TR2 0.13 0.35 0.7 0.025 0.02 320 320
P235TR1 0.16 0.35 1.2 0.025 0.02 360 360
P235TR2 0.16 0.35 1.2 0.025 0.02 360 360
P265TR1 0.2 0.4 1.4 0.025 0.02 410 410
P265TR2 0.2 0.4 1.4 0.025 0.02 410 410
EN10217-2 P195GH 0.13 0.35 0.7 0.025 0.02 320 320
P235GH 0.16 0.35 1.2 0.025 0.02 360 360
P265GH 0.2 0.4 1.4 0.025 0.02 410 410
EN10217-5 P235GH 0.16 0.35 1.2 0.025 0.02 360 360
P265GH 0.2 0.4 1.4 0.025 0.02 410 410
EN10219-1 S235JRH 0.17 - 1.4 0.04 0.04 360 360
S275JOH 0.2 - 1.5 0.035 0.035 410 410
S275J2H 0.2 - 1.5 0.03 0.03 410 410
S355JOH 0.22 0.55 1.6 0.035 0.035 470 470
S355J2H 0.22 0.55 1.6 0.03 0.03 470 470
S355K2H 0.22 0.55 1.6 0.03 0.03 470 470

 

Tolerance of Outside Diameter and Wall Thickness

 

Standard Tolerance of Pipe Body Tolerance of Pipe End Tolerance of Wall Thickness
Out Diameter Tolerance Out Diameter Tolerance
GB/T3091 OD≤48.3mm ≤±0.5 OD≤48.3mm - ≤±10%
48.3 ≤±1.0% 48.3 -
273.1 ≤±0.75% 273.1 -0.8～+2.4
OD>508mm ≤±1.0% OD>508mm -0.8～+3.2
GB/T9711.1 OD≤48.3mm -0.79～+0.41 - - OD≤73 -12.5%～+20%
60.3 ≤±0.75% OD≤273.1mm -0.4～+1.59 88.9≤OD≤457 -12.5%～+15%
508 ≤±1.0% OD≥323.9 -0.79～+2.38 OD≥508 -10.0%～+17.5%
OD>941mm ≤±1.0% - - - -
GB/T9711.2 60 ±0.75%D～±3mm 60 ±0.5%D～±1.6mm 4mm ±12.5%T～±15.0%T
610 ±0.5%D～±4mm 610 ±0.5%D～±1.6mm WT≥25mm -3.00mm～+3.75mm
OD>1430mm - OD>1430mm - - -10.0%～+17.5%
SY/T5037 OD<508mm ≤±0.75% OD<508mm ≤±0.75% OD<508mm ≤±12.5%
OD≥508mm ≤±1.00% OD≥508mm ≤±0.50% OD≥508mm ≤±10.0%
API 5L PSL1/PSL2 OD<60.3 -0.8mm～+0.4mm OD≤168.3 -0.4mm～+1.6mm WT≤5.0 ≤±0.5
60.3≤OD≤168.3 ≤±0.75% 168.3 ≤±1.6mm 5.0 ≤±0.1T
168.3 ≤±0.75% 610 ≤±1.6mm T≥15.0 ≤±1.5
610 ≤±4.0mm OD>1422 - - -
OD>1422 - - - - -
ASTM A53 ≤±1.0% ≤±1.0% ≤-12.5%
ASTM A252 ≤±1.0% ≤±1.0% ≤-12.5%

 

 

Production Process of Spiral Welded Steel Pipe

QQ20260211-142241

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