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SSAW steel pipe (Spiral Submerged Arc-Welding Pipe), also called HSAW pipe (Helical SAW), welding line shape like a helix. It uses the welding technology of spiral submerged arc-welding. There is a wide application for SSAW steel pipes, such as oil and gas pipeline systems, construction structure, water transport and sewage treatment, thermal industry, buildings, etc.
Standard :
ASTM AISI DIN JIS GB ENMaterial :
A36、A53、A106、A192、ST52、Q355、A210、T12、T11、P5、P9、P91、T22、A333、4140、5135 etc.Thickness :
1mm-150mmProcess :
Argon arc welding、Submerged arc welding、High frequency weldingSSAW Steel Pipe-EC2
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 5CT | h40 | - | - | - | - | 0.030 | 417 | 417 |
J55 | - | - | - | - | 0.030 | 517 | 517 | |
K55 | - | - | - | - | 0.030 | 655 | 655 | |
API 5L PSL1 | A | 0.22 | - | 0.90 | 0.030 | 0.030 | 335 | 335 |
B | 0.26 | - | 1.20 | 0.030 | 0.030 | 415 | 415 | |
X42 | 0.26 | - | 1.30 | 0.030 | 0.030 | 415 | 415 | |
X46 | 0.26 | - | 1.40 | 0.030 | 0.030 | 435 | 435 | |
X52 | 0.26 | - | 1.40 | 0.030 | 0.030 | 460 | 460 | |
X56 | 0.26 | - | 1.40 | 0.030 | 0.030 | 490 | 490 | |
X60 | 0.26 | - | 1.40 | 0.030 | 0.030 | 520 | 520 | |
X65 | 0.26 | - | 1.45 | 0.030 | 0.030 | 535 | 535 | |
X70 | 0.26 | - | 1.65 | 0.030 | 0.030 | 570 | 570 | |
API 5L PSL2 | B | 0.22 | 0.45 | 1.20 | 0.025 | 0.015 | 415 | 415 |
X42 | 0.22 | 0.45 | 1.30 | 0.025 | 0.015 | 415 | 415 | |
X46 | 0.22 | 0.45 | 1.40 | 0.025 | 0.015 | 435 | 435 | |
X52 | 0.22 | 0.45 | 1.40 | 0.025 | 0.015 | 460 | 460 | |
X56 | 0.22 | 0.45 | 1.40 | 0.025 | 0.015 | 490 | 490 | |
X60 | 0.12 | 0.45 | 1.60 | 0.025 | 0.015 | 520 | 520 | |
X65 | 0.12 | 0.45 | 1.60 | 0.025 | 0.015 | 535 | 535 | |
X70 | 0.12 | 0.45 | 1.70 | 0.025 | 0.015 | 570 | 570 | |
X80 | 0.12 | 0.45 | 1.85 | 0.025 | 0.015 | 625 | 625 | |
GB/T 9711.1 | L210 | - | - | 0.90 | 0.030 | 0.030 | 335 | 335 |
L245 | - | - | 1.15 | 0.030 | 0.030 | 415 | 415 | |
L290 | - | - | 1.25 | 0.030 | 0.030 | 415 | 415 | |
L320 | - | - | 1.25 | 0.030 | 0.030 | 435 | 435 | |
L360 | - | - | 1.25 | 0.030 | 0.030 | 460 | 460 | |
L390 | - | - | 1.35 | 0.030 | 0.030 | 490 | 490 | |
L415 | 0.26 | - | 1.35 | 0.030 | 0.030 | 520 | 520 | |
L450 | 0.26 | - | 1.40 | 0.030 | 0.030 | 535 | 535 | |
L485 | 0.23 | - | 1.60 | 0.030 | 0.030 | 570 | 570 | |
GB/T3091/ SY/T503 | Q195 | 0.12 | 0.30 | 0.50 | 0.035 | 0.040 | 315 | 315 |
Q215B | 0.15 | 0.35 | 1.20 | 0.045 | 0.045 | 335 | 335 | |
Q235B | 0.20 | 0.35 | 1.40 | 0.045 | 0.045 | 370 | 370 | |
Q345B | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 470 | 470 | |
ASTM A53 | A | 0.25 | 0.10 | 0.95 | 0.050 | 0.045 | 330 | 330 |
B | 0.30 | 0.10 | 1.20 | 0.050 | 0.045 | 415 | 415 | |
ASTM A252 | 1 | - | - | - | 0.050 | - | 345 | 345 |
2 | - | - | - | 0.050 | - | 414 | 414 | |
3 | - | - | - | 0.050 | - | 455 | 455 | |
EN10217-1 | P195TR1 | 0.13 | 0.35 | 0.70 | 0.025 | 0.020 | 320 | 320 |
P195TR2 | 0.13 | 0.35 | 0.70 | 0.025 | 0.020 | 320 | 320 | |
P235TR1 | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 | 360 | 360 | |
P235TR2 | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 | 360 | 360 | |
P265TR1 | 0.20 | 0.40 | 1.40 | 0.025 | 0.020 | 410 | 410 | |
P265TR2 | 0.20 | 0.40 | 1.40 | 0.025 | 0.020 | 410 | 410 | |
EN10217-2 | P195GH | 0.13 | 0.35 | 0.70 | 0.025 | 0.020 | 320 | 320 |
P235GH | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 | 360 | 360 | |
P265GH | 0.20 | 0.40 | 1.40 | 0.025 | 0.020 | 410 | 410 | |
EN10217-5 | P235GH | 0.16 | 0.35 | 1.20 | 0.025 | 0.020 | 360 | 360 |
P265GH | 0.20 | 0.40 | 1.40 | 0.025 | 0.020 | 410 | 410 | |
EN10219-1 | S235JRH | 0.17 | - | 1.40 | 0.040 | 0.040 | 360 | 360 |
S275JOH | 0.20 | - | 1.50 | 0.035 | 0.035 | 410 | 410 | |
S275J2H | 0.20 | - | 1.50 | 0.030 | 0.030 | 410 | 410 | |
S355JOH | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | 470 | 470 | |
S355J2H | 0.22 | 0.55 | 1.60 | 0.030 | 0.030 | 470 | 470 | |
S355K2H | 0.22 | 0.55 | 1.60 | 0.030 | 0.030 | 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<od≤273.1mm </od≤273.1mm |
≤±1.0% | 48.3<od≤273.1mm< span="" style="padding: 0px; margin: 0px;"> </od≤273.1mm<> |
- | |||
273.1<od≤508mm </od≤508mm |
≤±0.75% | 273.1<od≤508mm< span="" style="padding: 0px; margin: 0px;"> </od≤508mm<> |
-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<od≤457mm </od≤457mm |
≤±0.75% | OD≤273.1mm | -0.4~+1.59 | 88.9≤OD≤457 | -12.5%~+15% | |
508<od≤941mm </od≤941mm |
≤±1.0% | OD≥323.9 | -0.79~+2.38 | OD≥508 | -10.0%~+17.5% | |
OD>941mm | ≤±1.0% | - | - | - | - | |
GB/T9711.2 | 60<od≤610mm </od≤610mm |
±0.75%D~±3mm | 60<od≤610mm </od≤610mm |
±0.5%D~±1.6mm | 4mm<wt<25mm </wt<25mm |
±12.5%T~±15.0%T |
610<od≤1430mm </od≤1430mm |
±0.5%D~±4mm | 610<od≤1430mm </od≤1430mm |
±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<od≤610 </od≤610 |
≤±1.6mm | 5.0<wt<15.0 </wt<15.0 |
≤±0.1T | |
168.3<od≤610 </od≤610 |
≤±0.75% | 610<od≤1422 </od≤1422 |
≤±1.6mm | T≥15.0 | ≤±1.5 | |
610<od≤1422 </od≤1422 |
≤±4.0mm | OD>1422 | - | - | - | |
OD>1422 | - | - | - | - | - | |
API 5CT | OD<114.3 | ≤±0.79mm | OD<114.3 | ≤±0.79mm | ≤-12.5% | |
OD≥114.3 | -0.5%~1.0% | OD≥114.3 | -0.5%~1.0% | ≤-12.5% | ||
ASTM A53 | ≤±1.0% | ≤±1.0% | ≤-12.5% | |||
ASTM A252 | ≤±1.0% | ≤±1.0% | ≤-12.5% |
SSAW steel pipe is the raw material of strip coil, often temperature extrusion molding, automatic double-wire double submerged arc welding process made of spiral seam pipe. Spiral steel pipe will strip into the pipe unit, the multi-roll rolling, strip rolled up, forming a circular gap opening gap, adjust the squeeze roll reduction, the weld gap control in the 1 ~ 3mm, and make both ends of the weld flush.