Wenzhou Dongna Machinery Co., Ltd.

Wenzhou Dongna machinery Co., Ltd. Is a professional manufacturer for stainless steel products starting off with producing stainless pipe fitting. Our products such as stainless steel seamless pipe, welded pipe, pipe fitting and valves are widely used in the fields of food processing, medicine making, petro-chemical, chemical, machine biulding, power, auto-making, ship biulding, navigation, aviation and aerospace industries.
Presently Dongna manufactures standard such as ASME (ANSI), DIN, JIS, BS GB/T, JB, SH HG pipe-sizes using AISI 304L, 316L, 321 and 316Ti and so on steel grades. The factory is engaged in production of pipes ranging from 1/2" to 20" mm in outside diameter.
The company attaches great importance to the quality control during the production. Our continuous product development and production quality control is exercised by Technical Control Department (TCD). The TCD now has such modern quality inspection equipments as optical detector, whirlpool and supersonic flaw detector, universal material testing machine, inphase microscope, sclerometer and steel separator. It boasts professional engineers, designers and a skilled staff team. It strictly controls all links including raw material, production and inspection. We will continuously do our best to be a pioneer of developing new products and lead the industry to satisfy ever more increasing customer expectation. We believe our dedication to the quality and sevice will win the world.