Specifications: DN15-DN660Uses: Widely used in water, gas, air, oil and steam and other low-pressure fluid transportation and mechanical structureNew: oil and gas line pipe, oil pipe, rotary pressure drill pipe, marine large diameter high frequency straight seam welded pipe, mechanical pipe and other special pipes Products The straight seam high-frequency welded steel pipe is a kind of steel pipe made by high-frequency welding process, which has the advantages of high production efficiency, low cost and stable quality, ...