Zhejiang Yihong Stainless Steel Co., Ltd. is a big manufactory specialized in producing stainless steel seamless pipes, and now has two production bases in Songyang of Lishui and Longwan of Wenzhou with more than 400 workers including over 60 various professional technicians.
Our company has established perfect quality management system in strict accordance with requirements of ISO9001:2008 system. We also have perfect inspection equipment such as ET16-159 eddy current flaw detector, UT16-159 ultrasonic flaw detector, UT159-830 ultrasonic flaw detector, 30Mpa hydraulic tester, hydraulic universal material tester, chemical analyzer and inter-granular corrosion tester. The specifications of products include outside diameter 6-830mm and wall thickness 1-60mm.The main steel grades include 304/L/H, 316/L/H, 321/H, 317/L and 310S. Our products are manufactured according to GB, ASTM, ASME, DIN, EN, GOST, JIS, PED and CCS standards and are widely used in such industries as petrochemical industry, chemical fertilizer, nuclear power, boiler, naval vessel, environmental industry, aeronautics, pulp and paper, food and medicine.
Our company mainly produces 310S high temperature resistant and oxidation resistant steel tubes and large diameter stainless steel seamless pipes. Especially for 310S high temperature resistant steel pipes, our company has taken the lead in Wenzhou in researching and developing them with our unique production technology, and we have been still sharing a large portion in this field till now.
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