Our company devote s to the following products' selling and manufacturing, such as seamless stainless steel tubes (φ 6* 1- φ 630* 20 ) with material 301, 304, 304l, 321, 316, 316l, 310s; Capillar ies (φ 0.5* 0.1 - φ 6* 1 ); Square tubes ( 15* 15* 1 - 200* 200* 12 ) a ND welded tubes.

Quality of our products accords with the national standard (GB/t14975-2002, GB/t14976-2002, GB13296-91 ) as well as American standard ASTM, Japan ese standard jis, German standard din etc. The products with s pecial material and specification can be made according to customer's request.

Our products can be used extensively: Petroleum, chemical industry, chemical fiber, medical machinery, smelting, spaceflight aviation, papermaking, food, shipbuilding, environmental protection, boiler, heat exchanger, pressure container, condenser, water conservancy, electricity industry, etc...

Staff of longda inherit the management theory " reputation ranked first, customer regarded as the highest, coopera ting and win ing together ". They'd like to offer the quali fied product s and fine service to internal and external customers wholeheartedly.