Zhejiang Yihong Stainless Steel Co., Ltd. is a big manufactory specialized in producing stainless steel seamless pipes. 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.