Welded Rectangular Steel Pipe uses a high-frequency welding unit to roll a certain specification of a long steel strip into a round tube and weld it into a steel pipe by straight seam welding. The shape of the steel pipe can be round, square or special-shaped, depending on the sizing and rolling after welding. The main materials of welded steel pipes are: low carbon steel and low alloy steel with σs≤300N/mm2, σs≤500N/mm2 or other steels.
W.T：1.0-15mm
Length:5.8m.6m,11.8 or customer requirements
Diameter:15*15-500*500mm
Technique:ERW,SSAW,LSAW
Ends:Plain ends, cutting, threading, beveled, flange, etc
Surface Treatment:Galvanized, 3PE, painting, coating oil, steel stamp, drilling etc
Packing:Packing in bundle with steel strips; with seaworthy package at the end; could be done with your requirement.
Material Type:Available in cold rolled and hot rolled
Steel Grade:
Q195 similar to a283 GR.B, 040a10, ss330, sphc
Q235 similar to a283 GR.D, 080a15,CS type B
Q345 similar to a737 GR.B, SS400, S235JR
Elements | Chemical Composition% | Mechanical Property | ||||||
C% | Mn% | S% | P% | Si% | Yield Point (Mpa) | Tensile Strength（Mpa） | Elongation | |
Q195 | 0.06-0.12 | 0.25-0.50 | <0.050 | <0.045 | <0.30 | >195 | 315-430 | 32-33 |
Q235 | 0.12-0.20 | 0.30-0.70 | <0.045 | <0.045 | <0.30 | >235 | 375-500 | 24-26 |
Q345 | <0.20 | 1.0-1.6 | <0.040 | <0.040 | <0.55 | >345 | 470-630 | 21-22 |
Welded Rectangular Steel Pipe is used for urban construction pipes, mechanical structure pipes, agricultural equipment pipes, water gas pipes, air pipes, heating steam, greenhouse pipes, scaffolding pipes, building materials pipes, furniture pipes, low pressure fluid pipes, oil pipes and other generally lower pressure fluids and others Field of use.
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