Welded pipe is an electric welded round pipe that is an alternative to steel pipes.It is a structural grade tube that is suitable for a wide variety of applications where dimensional accuracy and precision tolerances is not a primary concern.A raised weld seam is present inside the pipe.
Spiral welded steel pipe is a kind of practical steel pipe, now it has been widely used in small and medium-sized construction site construction facilities, not only that, spiral steel pipe is often used in mining, power, construction and various pipeline systems, one of the important industries.
On the basis of the original is trying to research this more excellent quality of new spiral steel pipe, the purpose is to spiral steel pipe for everybody to create greater profits for pressure fluid transmission with spiral seam submerged arc welding steel pipe.Spiral welded pipe industry investment risk and prospect consulting analysis report released by China industry research network shows that spiral welded pipe is widely used in the fields of tap water engineering, petrochemical industry, hydropower station, power industry, agricultural irrigation and rural construction.Spiral steel pipe is widely used in agriculture, chemical industry, construction, water conservancy, petrochemical industry.
Key Specifications/ Special Features:
1)Spiral welded pipe is the low carbon carbon structural steel and low alloy steel strip according to certain Angle of helix Angle (called molding) rolled into a tube billet, then pipe seam welding made up, it can use a narrow strip in the production of large diameter steel pipe.* wall thickness, according to its specifications with diameter welded pipe shall ensure that the water pressure test, the tensile strength and cold bending properties of the weld in accordance with regulations.
2)Commonly used standards of the spiral steel pipe can be divided into: SY/T5037-2000 (solid, also known as the common fluid conveying pipe with spiral seam submerged arc welding steel pipe), GB/T9711.1-1997 (national standard, also known as oil and gas industry conveying pipe delivery technical conditions in the first part: grade A steel pipe (GB/T9711.2 strict grade B steel pipe)), API 5 l (American petroleum institute, also known as the pipeline steel pipe; which can be divided into PSL1 and PSL2 two levels), SY/T5040-92 (pile with spiral seam submerged arc welding steel pipe).
Description | Spiral welded steel pipe, Straight seam welded steel pipe, Carbon steel tube, ERW steel tube, EFW steel pipe |
Standards | ASTM, AISI, JIS, SUS, EN, DIN, BS, GB |
Certificate | API 5L ERW PSL1/PSL2, API 5CT, CE, ISO |
Material | Q195, Q215, Q235, Q275, Q295, Q345, S275, S355, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8 |
ASTM A 53: Gr. A, Gr B, Gr C, Gr.D | |
API 5L: Gr.A, Gr.B, X42, X46, X52, X56, X60, X65, X70 | |
GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555 | |
ASTM A252: Gr.1 Gr.2 Gr.3 | |
Type | Spiral, ERW (Electrical Resistance Weld), EFW (Electric Fusion Welding) |
Outside Diameter | 6mm-2500mm (1/8 inch, 1/4 inch, 1/2 inch, 3/4 inch, 1inch, 1 1/4 inch, 1 1/2 inch, 2inch, 2 1/2 inch, 3inch, 3 1/2 inch, 4inch, 5 inch, 6inch, 8 inch, 10 inch, 12inch, 14inch, 16 inch, 18 inch, 20 inch, 22 inch, 24 inch, 26inch, 28 inch, 30 inch, 32 inch, 34 inch, 36 inch, 38 inch, 40 inch, 42 inch, 44 inch, 46 inch, 48 inch) |
Thickness | 1mm~220mm (SCH5 ,SCH10,SCH20,SCH30,STD,SCH40,SCH60,XS, SCH80,SCH100,SCH120,SCH140,SCH160, XXS) |
Length | 6m, 5.8m,or as required |
Outside Coating | Anti-rust oil, black painting. |
Epoxy Coating according to AWWA C-210 | |
Bitumen Coating according to DIN30672, BS534 | |
Coal- Tar Enamel Coating according to AWWA C-203 | |
3 Layer polyethylene Coating according to DIN30670 | |
3 Layer Polypropylene Coating according to DIN30678 | |
Inside Coating | Epoxy lining according to AWWA C-210 |
Bitumen Lining according to DIN30673, BS534 | |
Coal-Tar Enamel Lining according to AWWA C-203 | |
Cement Mortar Lining according to AWWA C-205, BS534 | |
Testing and Inspection Reports | EN 10204 3.1, Mill TC EN 10204 3.1, Third Party Inspection Reports, Visual Inspection Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Chemical and Mechanical Reports, NABL Approved Lab |
Price Term | EX-Work, FOB, CFR, CIF |
Package | Wooden box, bundled for export standard or as required |
Payment Term | T/T, L/C, |
Delivery Time | 25-45 days (based on quantity) after receiving advanced payment |
Application | a) General service industries (petroleum, food, chemical, paper, fertilizer, fabric, aviation and nuclear) b) Fluid, gas and oil transport c) Pressure and heat transmission d) Construction and ornament e) Boiler heat exchangers |
Chemical Element Composition (%) | ||||||||
GB | ASTM | BS | C | Mn | Si | S | P | |
Q195 | - | A285M Gr.B | S185 | 0.06~0.12 | 0.25~0.5 | ≤0.30 | ≤0.040 | ≤0.035 |
Q215 | A | A285M Gr.C | 040A12 | 0.09~0.15 | 0.25~0.55 | ≤0.35 | ≤0.050 | ≤0.045 |
B | A573M Gr.58 | - | ≤0.045 | |||||
Q235 | A | A570 Gr. A | S235JR | 0.14~0.22 | 0.30~0.65 | ≤0.36 | ≤0.050 | ≤0.045 |
B | A571 Gr. D | S235JRG1 | 0.12~0.2 | 0.30~0.70 | ≤0.045 | |||
C | A283M Gr.D | S235JRG2 | ≤0.18 | 0.35~0.80 | ≤0.040 | ≤0.040 | ||
D | - | - | ≤0.17 | ≤0.035 | ≤0.035 | |||
Q345 | A | A572 Gr.50 | - | ≤0.20 | 1.00~1.60 | ≤0.55 | ≤0.045 | ≤0.045 |
B | 50B | ≤0.040 | ≤0.040 | |||||
C | 50C | ≤0.035 | ≤0.035 | |||||
D | 50D | ≤0.18 | ≤0.030 | ≤0.030 |
1/8" IPS(0.405" O.D.) | 3 1/2" IPS( 4.000" O.D.) |
SCH 40, 80 | SCH 10, 40, 80, 160, XXH |
1/4" IPS(0.540" O.D.) | 4" IPS(4.500" O.D.) |
SCH 10, 40, 80 | SCH 10, 40, 80, 160, XXH |
3/8" IPS(0.675" O.D.) | 5" IPS( 5.563" O.D.) |
SCH 10, 40, 80 | SCH 10, 40, 80, 160, XXH |
1/2" IPS(0.840" O.D.) | 6" IPS(6.625" O.D.) |
SCH 5, 10, 40, 80, 160, XXH | SCH 5, 10, 40, 80, 120, 160, XXH |
3/4" IPS(1.050" O.D.) | 8 " IPS(8.625" O.D.) |
SCH 10, 40, 80, 160, XXH | SCH 5, 10, 40, 80, 120, 160, XXH |
1" IPS:(1.315′ O.D.) | 10" IPS(10.750" O.D.) |
SCH 5, 10, 40, 80, 160, XXH | SCH 10, 20, 40, 80 (.500), TRUE 80(.500) |
1-1/4" IPS(1.660" O.D.) | 12" IPS(12.750" O.D.) |
SCH 10, 40, 80, 160, XXH | SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500) |
1-1/2" IPS(1.900" O.D.) | 14" IPS(14.000" O.D.) |
SCH 10, 40, 80, 160, XXH | SCH10 (.188), SCH40 (.375) |
2" IPS(2.375" O.D.) | 16" IPS(16.000" O.D.) |
SCH 10, 40, 80, 160, XXH | SCH10(.188), SCH40(.375) |
2 1/2" IPS(2.875" O.D.) | 18" IPS (18.000" O.D.) |
SCH 10, 40, 80, 160, XXH | SCH-40 (.375) |
3" IPS( 3.500" O.D.) | |
SCH 5, 10, 40, 80, 160, XXH |
NPS | Outside Diameter | Wall Thickness | Weight | Weight | |||
in | mm | in | mm | Sched | kg/Mtr | Lb/ft | |
1/2″ | 0.840 | 21 | 0.109 | 2.769 | 40 STD | 1.268 | 0.851 |
0.147 | 3.734 | 80 STD | 1.621 | 1.088 | |||
3/4″ | 1.050 | 27 | 0.113 | 2.870 | 40 STD | 1.684 | 1.131 |
0.154 | 3.912 | 80 STD | 2.195 | 1.474 | |||
1″ | 1.315 | 33 | 0.133 | 3.378 | 40 STD | 2.501 | 1.679 |
0.179 | 4.547 | 80 STD | 3.325 | 2.172 | |||
1 1/4″ | 1.660 | 42 | 0.140 | 3.556 | 40 STD | 3.385 | 2.273 |
0.191 | 4.851 | 80 STD | 4.464 | 2.997 | |||
1 1/2″ | 1.900 | 48 | 0.145 | 3.683 | 40 STD | 4.048 | 2.718 |
0.200 | 5.080 | 80 STD | 5.409 | 3.361 | |||
2″ | 2.375 | 60 | 0.154 | 3.912 | 40 STD | 5.441 | 3.653 |
0.218 | 5.537 | 80 STD | 7.480 | 5.022 | |||
2 1/2″ | 2.875 | 73 | 0.203 | 5.516 | 40 STD | 8.629 | 5.793 |
0.276 | 7.010 | 80 STD | 11.411 | 7.661 | |||
3″ | 3.500 | 89 | 0.216 | 5.486 | 40 STD | 11.284 | 7.576 |
0.300 | 7.620 | 80 STD | 15.272 | 10.253 | |||
4″ | 4.500 | 114 | 0.237 | 6.020 | 16.073 | 10.790 | |
0.337 | 8.560 | 22.318 | 14.983 | ||||
6″ | 6.625 | 168 | 0.188 | 4.775 | 19.252 | 12.924 | |
0.203 | 5.516 | 20.739 | 13.923 | ||||
0.219 | 5.563 | 22.318 | 14.983 | ||||
0.250 | 6.350 | 25.354 | 17.021 | ||||
0.280 | 7.112 | 40 STD | 58.263 | 18.974 | |||
0.312 | 7.925 | 31.334 | 21.036 | ||||
0.375 | 9.525 | 37.285 | 25.031 | ||||
0.432 | 10.973 | 80 XHY | 42.561 | 28.573 | |||
0.500 | 12.700 | 48.719 | 32.708 | ||||
8″ | 8.625 | 219 | 0.188 | 4.775 | 25.233 | 16.940 | |
0.203 | 5.156 | 27.198 | 18.259 | ||||
0.219 | 5.563 | 29.286 | 19.661 | ||||
0.250 | 6.350 | 20 | 33.308 | 22.361 | |||
0.277 | 7.036 | 30 | 36.786 | 24.696 | |||
0.322 | 8.179 | 40 | 42.352 | 28.554 | |||
0.375 | 9.525 | 49.216 | 33.041 | ||||
0.406 | 10.312 | 60 | 53.085 | 35.638 | |||
0.500 | 12.700 | 80 XHY | 64.627 | 43.388 | |||
10″ | 10.750 | 273 | 0.188 | 4.775 | 31.588 | 21.207 | |
0.219 | 5.563 | 36.689 | 24.631 | ||||
0.250 | 6.350 | 20 | 41.759 | 28.035 | |||
0.307 | 7.798 | 30 | 51.002 | 34.240 | |||
0.344 | 8.738 | 56.946 | 38.231 | ||||
0.365 | 9.271 | 40 STD | 63.301 | 40.483 | |||
0.438 | 11.125 | 71.852 | 48.238 | ||||
0.500 | 12.700 | 60 XHY | 81.530 | 54.735 | |||
0.594 | 15.088 | 80 | 95.969 | 64.429 | |||
12″ | 12.750 | 324 | 0.188 | 4.775 | 37.570 | 25.222 | |
0.219 | 5.563 | 43.657 | 29.309 | ||||
0.250 | 6.350 | 49.713 | 33.375 | ||||
0.281 | 7.137 | 55.739 | 37.420 | ||||
0.312 | 7.925 | 61.735 | 41.445 | ||||
0.375 | 9.525 | 73.824 | 49.562 | ||||
0.406 | 10.312 | 79.727 | 53.525 | ||||
0.500 | 12.700 | 97.438 | 65.415 | ||||
0.562 | 14.275 | 108.966 | 73.154 | ||||
14″ | 14.000 | 356 | 0.188 | 4.775 | 41.308 | 27.732 | |
0.219 | 5.563 | 48.012 | 32.233 | ||||
0.250 | 6.350 | 20 | 54.685 | 36.713 | |||
0.281 | 7.137 | 61.327 | 41.172 | ||||
0.312 | 7.925 | 67.939 | 45.611 | ||||
0.375 | 9.525 | STD | 81.281 | 54.568 | |||
0.438 | 11.125 | 40 | 94.498 | 63.441 | |||
0.500 | 12.700 | XHY | 107.381 | 72.090 | |||
0.625 | 15.875 | 132.983 | 89.278 | ||||
16" | 16.000 | 406 | 0.188 | 4.775 | 47.290 | 21.748 | |
0.219 | 5.563 | 54.980 | 36.910 | ||||
0.250 | 6.350 | 10 | 62.639 | 42.053 | |||
0.281 | 7.137 | 70.268 | 47.174 | ||||
0.312 | 7.925 | 20 | 77.866 | 52.275 | |||
0.344 | 8.738 | 85.677 | 57.519 | ||||
0.375 | 9.525 | 30 STD | 93.213 | 62.578 | |||
0.438 | 11.125 | 108.433 | 72.797 | ||||
0.500 | 12.700 | 40 XHY | 123.289 | 82.770 | |||
18″ | 18.000 | 457 | 0.219 | 5.563 | 61.948 | 41.588 | |
0.250 | 6.350 | 70.593 | 47.393 | ||||
0.281 | 7.137 | 79.208 | 53.176 | ||||
0.312 | 7.925 | 20 | 87.792 | 58.939 | |||
0.375 | 9.525 | STD | 105.144 | 70.588 | |||
0.438 | 11.125 | 30 | 122.369 | 82.152 | |||
0.500 | 12.700 | XHY | 139.198 | 93.450 | |||
0.562 | 14.275 | 40 | 155.904 | 104.666 | |||
0.625 | 15.875 | 172.754 | 115.978 | ||||
20″ | 20.000 | 508 | 0.250 | 6.350 | 78.547 | 52.733 | |
0.282 | 7.163 | 88.458 | 59.386 | ||||
0.312 | 7.925 | 97.719 | 65.604 | ||||
0.375 | 9.525 | 20 STD | 117.075 | 78.598 | |||
0.438 | 11.125 | 136.305 | 91.508 | ||||
0.500 | 12.700 | 30 XHY | 155.106 | 104.130 | |||
0.594 | 15.088 | 40 | 183.378 | 123.110 | |||
0.625 | 15.875 | 192.640 | 129.328 | ||||
0.688 | 17.475 | 211.368 | 141.901 | ||||
24″ | 24.000 | 610 | 0.250 | 6.350 | 94.456 | 63.413 | |
0.281 | 7.137 | 106.029 | 71.183 | ||||
0.312 | 7.925 | 117.573 | 18.932 | ||||
0.375 | 9.525 | 20 STD | 140.938 | 64.618 | |||
0.438 | 11.125 | 164.176 | 110.219 | ||||
0.500 | 12.700 | XHY | 186.923 | 125.490 | |||
0.625 | 15.875 | 232.410 | 156.028 | ||||
0.688 | 17.475 | 40 | 255.148 | 171.293 | |||
0.750 | 19.050 | 277.401 | 186.233 | ||||
30″ | 30.000 | 762 | 0.250 | 6.350 | 118.318 | 79.433 | |
0.281 | 7.137 | 132.851 | 89.189 | ||||
0.312 | 7.925 | 10 | 147.353 | 98.925 | |||
0.375 | 9.525 | STD | 176.731 | 118.648 | |||
0.438 | 11.125 | 205.983 | 138.286 | ||||
0.500 | 12.700 | 20 XHY | 234.647 | 157.530 | |||
0.625 | 15.875 | 30 | 292.066 | 196.078 | |||
0.688 | 17.475 | 320.817 | 215.380 | ||||
0.750 | 19.050 | 348.988 | 234.293 | ||||
36″ | 36.000 | 914 | 0.250 | 6.350 | 142.180 | 95.453 | |
0.281 | 7.137 | 159.672 | 107.196 | ||||
0.312 | 7.925 | 10 | 177.133 | 118.918 | |||
0.375 | 9.525 | STD | 215.525 | 142.678 | |||
0.438 | 11.125 | 247.790 | 166.353 | ||||
0.500 | 12.700 | 20 XHY | 282.372 | 198.570 | |||
0.625 | 15.875 | 351.723 | 236.128 | ||||
0.688 | 17.475 | 386.487 | 259.467 | ||||
0.750 | 19.050 | 420.576 | 282.353 | ||||
42″ | 42.000 | 1067 | 0.312 | 7.925 | 206.914 | 138.911 | |
0.375 | 9.525 | STD | 248.319 | 166.708 | |||
0.500 | 12.700 | XHY | 33.097 | 221.610 | |||
0.750 | 19.050 | 492.163 | 330.413 | ||||
48″ | 48.000 | 1219 | 0.375 | 9.525 | STD | 284.112 | 190.738 |
0.438 | 11.125 | 331.404 | 222.487 | ||||
0.500 | 12.700 | XHY | 377.822 | 253.650 | |||
0.750 | 19.050 | 563.750 | 378.473 | ||||
0.875 | 22.225 | 655.969 | 440.383 |
ERW PSL1 | ERW PSL2 | |||||||
Grade | C (Max.) | Mn (Max.) | P (Max.) | S (Max.) | C (Max.) | Mn (Max.) | P (Max.) | S (Max.) |
A | 0.22 | 0.90 | 0.03 | 0.03 | 0.22 | 1.20 | 0.025 | 0.015 |
B | 0.26 | 1.20 | 0.03 | 0.03 | 0.22 | 1.30 | 0.025 | 0.015 |
X42 | 0.26 | 1.30 | 0.03 | 0.03 | 0.22 | 1.40 | 0.025 | 0.015 |
X46 | 0.26 | 1.40 | 0.03 | 0.03 | 0.22 | 1.40 | 0.025 | 0.015 |
X52 | 0.26 | 1.40 | 0.03 | 0.03 | 0.22 | 1.40 | 0.025 | 0.015 |
X56 | 0.26 | 1.40 | 0.03 | 0.03 | 0.22 | 1.40 | 0.025 | 0.015 |
X60 | 0.26 | 1.40 | 0.03 | 0.03 | 0.22 | 1.45 | 0.025 | 0.015 |
X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.22 | 1.65 | 0.025 | 0.015 |
X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.22 | 1.85 | 0.025 | 0.015 |
Tolerance on dimension | |||||
OD Tolerance | WT Tolerance | ||||
A, B | X42 ~ X70 | ||||
D<60.3mm | +0.41/-0.40mm | D<73mm | +20%/-12.5% | D<73mm | +15%/-12.5% |
D>=60.3mm | +0.75/-0.40mm | D>=73mm | +15%/-12.5% | D>=73mm | +15%/-12.5% |
We provide one-stop trading services, including: design, quotation, inspection,packaging, delivery and installation to meet customer needs. We have many excellent experienced personnel. Our technical team combines advanced technology to provide sketch design and efficient project solutions. Our international sales staff can use professional knowledge to solve your problems. Our customers will always be respected because we meet all aspects of your personal needs.The company has always insisted on striving for survival by quality,continuously innovating in management and technology,and has established a sound scientific management and quality assurance system.
After 10 years of development and customer support, our carbon steel production capacity is from 500 tons/month to 10000 tons/month. Currently, we have 6 carbon steel production lines. Our professional engineers and well-trained workshop workers help our sales team complete every order ahead of schedule.
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day.