Large inventory of seamless steel pipes for tunnels, Welcome to place orders

Tunnel specific seamless steel pipe GB20 # has a large inventory of about 300 tons year-round, with specifications of outer diameter 42mm, wall thickness 3.5mm or 4mm, length of 8 meters, 9 meters, 10 meters, 10.5 meters, meeting diverse customer needs. Customers can place orders and pick up seamless steel pipe immediately, with sufficient inventory and timely delivery. Welcome friends from all over the world to visit our factory.