... , 202, 201, 409/410 The stainless steel of 304 and 316 are widely used in the petroleum, chemical industry, chemical ... , boiler, nuclear, electricity, astronautics, aviation, transportation, highway, biological medicine, and so on. And we can make many kinds of stainless steel pipes ... pipe, the U pipe. Our factory has advanced equipment and technology. We have invented many new products for the Shenzhou ...