We are a professional manufacture and exporter for steel prodcuts. The main products are pre galvanized steel pipe, hot dip galvanized pipe,welded steel pipe, square&rectangular tube and scaffolding products. Our manufacturing equipment include 4 pre galvanized product lines, 8 ERW steel pipe product lines, 3 hot-dipped galvanized process lines. According to the standard of GB,ASTM,DIN,JIS. The products are under the ISO9001 quality certification manage mode. Annual output of various pipe is more than 300 thousands tons, covering the range of 21.3-457mm round pipe,15*15-500*500mm square tube,15*20-500*100mm rectangular tube, , with thickness of 0.8-30mm.
Built 1697. Roadbed prepared for turnpike 1803. Iron tie bars installed above center arch on both up&downstream sides by 1860. Bridge widened on downstream side 1893. Stone parapets on both sides removed and replaced with overhanging steel and concrete sidewalks and steel railings 1950. 12″ thick concrete layer applied to underside of arches on upstream side about 1950.