1. Description
This equipment is specially used for producingΦ19-Φ76.2mm, δ0.8-3.0mm high-frequency straight seam welded pipe and corresponding square pipe and special-shaped pipe(δ≤3.0mm). The composition of equipment is from uncoiler to fixed length cutting saw. Rolling speed can be adjusted correspondingly within suitable range of pipe diameter and wall thickness.
2. Applicable material:
(1) Hot or cold-rolled steel strip (As per GB708-88 or GB1591-88)
(2) Material: Low-carbon steel, low alloy steelδs≤345Mpa, δb≤610Mpa
(3) The thickness of steel strip: 0.8-3.0mm (As per GB708-88)
(4) The width of steel strip: 60-200mm
(5) I.D. of steel coil: Φ450-Φ550mm
(6) O.D. of steel coil: Φ800-Φ1200mm
(7) Maximum weight coil: 3500kgs
3. Dimension range of processing steel tube:
(1) O.D.: Φ19-Φ63.5mm
(2) Square pipe size: 15x15～50x50mm
(3) rectangle pipe size：10x20~40x60mm
(4) Wall thickness: 0.8-3.0mm(square pipe and special-shaped pipeδ≤3.0mm)
(5) Length: 4-9m
4. Milling speed: 30-80M/min(choose different speed as per different pipe diameter and thickness)
5. Product (steel tube) process flow:
Raw material (steel coil) → uncoiling → shearing and end welding → material accumulating → non-power leveling → mill-forming → high-frequency welding → removing burrs outside of weld seam → cooling → sizing → roughly straightening → fixed length cutting → finishing tube
