| Wenzhou Qiangyu Pipe Co., Ltd, founded in 1990,is a professional manufacturer of metal pipes and accessories made of stainless steel, carbon steel and alloy steel etc. Presently, its products are GB12459-90, GB/T13401 series, such as ASME/ANSI B16.9, B16.28 butt-welded seamless elbow, butt-welded differential diameter pipes, seamless 3-way pip... |