China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC

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We are one of the leading manufacturers of steel pipe.We have our own factory! Details of Large diameter of steel pipes: Material Q195,Q215,Q235, Q345 Ends 1) Plain2) Beveled3) Thread with Coupling or cap End protector 1) Plastic pipe cap2) Iron protector Technique Electronic Resistance Welded (ERW )Electronic Fusion Welded (EFW)Double Submerged Arc Welded (DSAW) Packing Packed in bundles by containers, in bulk, oiled in bundles by containers, PE clothes or according to different...


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"Control the standard by the details, show the toughness by quality". Our firm has strived to establish a highly efficient and stable workers workforce and explored an effective high-quality management system for En 10219, Hollow Steel Sections, Metal Box Section Sizes, Adhering to the business philosophy of 'customer first, forge ahead', we sincerely welcome clients from at home and abroad to cooperate with us give you best service!
China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC Detail:

We are one of the leading manufacturers of steel pipe.We have our own factory!

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Details of Large diameter of steel pipes:

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Material Q195,Q215,Q235, Q345
Ends 1) Plain2) Beveled3) Thread with Coupling or cap
End protector 1) Plastic pipe cap2) Iron protector
Technique Electronic Resistance Welded (ERW )Electronic Fusion Welded (EFW)Double Submerged Arc Welded (DSAW)
Packing Packed in bundles by containers, in bulk, oiled in bundles by containers, PE clothes or according to different request.
Welded Line Type Longitudinal
Inspection With Hydraulic Testing, Eddy Current , Infrared Test
Delivery 1) Container2) Bulk carrier
MOQ 10 tons
Delivery time 7-20 days after received the advance payemnt
Country  of origin Fancyco,Tianjin, China
Payment T/T, L/C, Western Union, D/P, D/A, O/A
Price term FOB, CFR, CIF
Main market North America, South America, Europe, Middle East, Southeast Asia, Australia and Central Asia and many other countries and regions.
Others Fitting as screws and flange also can be supplied

 Normal Specification of Large diameter of steel pipes

Outer Diameter Wall Thickness Length
Inch mm mm meter
1/2″ 21.3mm 0.6mm-3.0mm 0.3m-12m
3/4″ 26.9mm 0.6mm-3.0mm 0.3m-12m
1″ 33.4mm 1.0mm-3.0mm 0.3m-12m
1-1/4″ 42.3mm 1.0mm-4.0mm 0.3m-12m
1-1/2″ 48.3mm 1.0mm-4.0mm 0.3m-12m
2″ 60.3mm 1.5mm-4.0mm 0.3m-12m
2-1/2″ 76.1mm 1.5mm-4.0mm 0.3m-12m
3″ 88.9mm 1.5mm-9.5mm 0.3m-12m
4″ 114.3mm 2.0mm-9.5mm 0.3m-12m
5″ 141.3mm 3.0mm-9.5mm 0.3m-12m
6″ 168.3mm 3.0mm-12.0mm 1.0m-12m
8″ 219.1mm 3.2mm-12.0mm 1.0m-12m
10″ 273mm 3.2mm-12.0mm 1.0m-12m
12″ 323.8mm 6.0mm-15.0mm 1.0m-12m
14″ 355.6mm 8.0mm-15.0mm 1.0m-12m
16″ 406.4mm 8.0mm-20.0mm 1.0m-12m

Standard out diameter for Large diameter of steel pipes:

Nominal Pipe Sizes Outside Diameters (mm)
DN INCH ASME JIS DIN GB/T
15 1/2″ 21.3 21.7 21.3 20.0
20 3/4″ 26.7 27.2 26.9 25.0
25 1″ 33.4 34.0 33.7 32.0
32 1.1/4″ 42.2 42.7 42.4 42.0
40 1.1/2″ 48.3 48.6 48.3 48.0
50 2″ 60.3 60.5 60.3 60.0
65 2.1/2″ 73.0 76.3 76.1 76.0
80 3″ 88.9 89.1 88.9 88.0
90 3.1/2″ 101.6 101.6   102.0
100 4″ 114.3 114.3 114.3 114.0
125 5″ 141.3 139.8 139.7 140.0
150 6″ 168.3 165.2 168.3 1.0
200 8″ 219.1 216.3 219.1 219.0
250 10″ 273.0 267.4 273.0 273.0
300 12″ 323.8 318.5 323.9 325.0
350 14″ 355.6 355.6 355.6 355.0
400 16″ 406.4 406.4 406.4 406.0
450 18″ 457.2 457.2 457.0 457.0
500 20″ 508.0 508.0 508.0 508.0
550 22″ 558.8 558.8   558.0
600 24″ 609.6 609.6 610.0 610.0
650 26″ 660.4 660.4   660.0
700 28″ 711.2 711.2 711.0 711.0
750 30″ 762.0 762.0   762.0
800 32″ 812.8 812.8 813.0 812.0
850 34″ 863.6 863.6   863.0
900 36″ 914.4 914.4 914.0 914.0
950 38″ 965.2 965.2   965.0
1000 40″ 1016.0 1016.0 1015.0 1015.0
1050 42″ 1066.8 1066.8   1066.0
1100 44″ 1117.6 1117.6   1117.0
1150 46″ 1108.4 1108.4   1168.0
1200 48″ 1219.2 1219.2 1220.0 1219.0

Specializing in the export of Large diameter of steel pipes.

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Packaging of Large diameter of steel pipes:

Standard export bundle wrapped with strong steel strip for seaworthy or as per customers requirement

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Product detail pictures:

China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC detail pictures

China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC detail pictures

China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC detail pictures

China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC detail pictures

China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC detail pictures

China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC detail pictures


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The really abundant projects management experiences and 1 to just one provider model make the high importance of business enterprise communication and our easy understanding of your expectations for China Seamless Welded Pipe Manufacturers - Large Diameter Of Steel Pipes – TOPTAC , The product will supply to all over the world, such as: Uruguay, kazan, Holland, Our company has already had a lot of top factories and qualified technology teams in China, offering the best goods, techniques and services to worldwide customers. Honesty is our principle, skilled operation is our work, service is our goal, and customers' satisfaction is our future!
  • A good manufacturers, we have cooperated twice, good quality and good service attitude.
    5 Stars By Andy from Iraq - 2017.11.12 12:31
    This company has the idea of "better quality, lower processing costs, prices are more reasonable", so they have competitive product quality and price, that's the main reason we chose to cooperate.
    5 Stars By Alice from Turkey - 2018.09.21 11:44
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