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Standard specification for straight welded pipe products: Diameter of single longitudinal seam welded pipe is φ400mm; diameter of multiple (2-3) longitudinal seam welded pipe is φ800mm; up to now, it is 3,000 mm, with wall thickness of 6mm to 120mm; the length of welded pipe meets the customer's requirements while the no butt joint length of single pipe could be 14m.
Classification of product Product technical indicators |
Delivery pipe |
Structural pipe |
Mechanical processing pipe |
Material |
X52-X80(API) |
Q235A-Q345 (GB/T1591-94) |
10#-35# (GB699-88) |
Wall thickness |
≤50mm |
≤120mm |
≤120mm |
Outer diameter |
325-1800mm |
Single longitudinal seam |
Single longitudinal seam |
400mm |
400-800mm |
Multiple longitudinal seams |
Two longitudinal seams |
≥400mm |
400-2,600mm |
Length |
6-14.3m |
1-14.3m |
1-14.3m |


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