black welded steel pipes chinese factory
12 factories, 72 production lines, 63 patented technologies, China's top 500 private enterprises and China's top 500 manufacturing industries, with an annual output of 5 million tons and a perennial spot supply of 200000 tons. China's largest square tube manufacturer.
YuantaiDerun's main products include square steel pipe, rectangular steel pipe, hot-dip galvanized steel pipe, ERW steel pipe, large-diameter thick wall square rectangular pipe, LSAW steel pipe, spiral steel pipe, seamless steel pipe, stainless steel pipe, galvanized coil, ppgi and stainless steel coil
Pipe orifice leveling
The surface shall be painted to prevent oxidation
Safe transportation in its own fleet