DN32 DN40 Q235 Welded Steel Pipes - 6m Length Industrial Grade for Water Supply and Construction
Welded steel pipes are manufactured from steel plates or strips that are curled, formed, and welded. Standard length is 6 meters. These pipes feature simple production processes, high efficiency, diverse specifications, and lower equipment investment, though generally with lower strength than seamless pipes.
Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, and other specialized steel grades.
| DN Size | Welded Pipe (Standard) | Welded Pipe (Thickened) | Seamless Pipe (Hot Rolled) | Spiral Welded Pipe |
|---|---|---|---|---|
| DN15 | 21.3×2.75 (1.25 kg/m) | 21.3×3.25 (1.44 kg/m) | ---- | ---- |
| DN20 | 26.8×2.75 (1.63 kg/m) | 26.8×3.5 (2.01 kg/m) | ---- | ---- |
| DN32 | 42.3×3.25 (3.13 kg/m) | 42.3×4 (3.77 kg/m) | 38×3.5 (2.98 kg/m) | ---- |
| DN40 | 48×3.5 (3.84 kg/m) | 48×4.25 (4.58 kg/m) | 45×3.5 (3.58 kg/m) | ---- |
| DN50 | 60×3.5 (4.88 kg/m) | 60×4.5 (6.16 kg/m) | 57×3.5 (4.62 kg/m) | ---- |
Straight seam welded pipes offer simple production, high efficiency, and cost-effectiveness. Smaller diameter pipes typically use straight seam welding.
Spiral welded pipes provide higher strength and enable production of larger diameters from narrower billets.
Rectangular and square pipes manufactured from steel strips, commonly used in construction and structural applications.
Heavy-duty pipes with diameters from 400-3000mm and wall thicknesses 4-300mm.
- Water supply and drainage systems
- Petrochemical and chemical processing
- Power generation facilities
- Agricultural irrigation networks
- Urban construction and infrastructure
- Structural applications including piling, bridges, and building frameworks
Shandong Zhengde Metal Manufacturing Co., Ltd. operates multiple production bases with over 100 production lines, 4 certified laboratories, and exports to 50+ countries worldwide.
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